MAXIM MAX19757

MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer
with Advanced Shutdown Features
General Description
The MAX19757 dual-channel downconverter is designed
to provide 8.8dB gain, +25.3dBm input IP3 and 10.4dB
NF for a multitude of 1700MHz to 2700MHz basestation
receiver applications. With an optimized LO frequency
range of 1800MHz to 2600MHz, this mixer supports both
high- and low-side LO injection architectures for 1700MHz
to 2200MHz and 2000MHz to 2700MHz RF bands,
respectively. Independent path shutdown allows the user
to save DC power during low-peak usage times or in TDD
TX mode.
The device integrates baluns in the RF and LO ports, an
LO buffer, two double-balanced mixers, and a pair of differential IF output amplifiers. The MAX19757 requires a
typical LO drive of 0dBm, and a supply current typically
300mA at band center and 350mA across the LO frequency band to achieve the targeted linearity performance.
The MAX19757 is available in a compact 36-pin TQFN
package (6mm x 6mm x 0.8mm) with an exposed paddle.
Electrical performance is guaranteed over the extended
-40°C to +105°C temperature range.
Applications
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2.3GHz WCS Base Stations
2.5GHz WiMAX®, LTE, TD-LTE Base Stations
2.7GHz MMDS Base Stations
UMTS/WCDMA, TD-SCDMA and cdma2000® 3G
Base Stations
DCS1800 and PCS1900 and EDGE Base Stations
Fixed Broadband Wireless Access
Wireless Local Loop
Private Mobile Radios
Military Systems
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part, refer
to www.maximintegrated.com/MAX19757.related.
WiMAX is a registered certification mark and registered
service mark of WiMAX Forum.
cdma2000 is a registered trademark of Telecommunications
Industry Association.
19-6280; Rev 0; 12/12
Benefits and Features
● 1700MHz to 2700MHz RF Frequency Range
● 1800MHz to 2600MHz LO Frequency Range
● 50MHz to 500MHz IF Frequency Range
● 25.3dBm IIP3
● 8.8dB Conversion Gain
● 13.1dBm Input 1dB Compression Point
● 10.4dB Noise Figure
● 73dBc 2RF–2LO Spurious Rejection at PRF = -10dBm
● Dual Channels Ideal for Diversity Receiver
Applications
● Integrated LO Buffer
● -3dBm to +3dBm LO Drive
● Built-In SPDT LO Switch with 50dB LO-to-LO
Isolation and 240ns Switching Time
● 46dB Channel Isolation
● Optional On-Chip Detector at IF Output Automatically
Adjusts Bias Current for Optimum Power
Management
● External Current-Setting Resistors Allow Tradeoff
Between Power and Performance
● Advanced Shutdown Features Include:
• Independent Path Power-Down
• Rapid Power-Down/Power-Up Modes for Toggling
Between On/Off States in TDD Applications
• Controlled LO Port Impedance Minimizes VCO Pulling During Power Cycling
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
Absolute Maximum Ratings
VCC........................................................................-0.3V to +5.5V
RFMAIN, RFDIV, LO1, LO2,
IFM+, IFM-, IFD+, IFD-.......................... -0.3V to (VCC + 0.3V)
IF_RADJ, LO_VADJ, LOSEL,
LO_TUNE1, LO_TUNE2....................... -0.3V to (VCC + 0.3V)
RFMAIN to RFM_RTN, RFDIV to RFD_RTN......................20mA
PD1, PD2, STBY, IF_DET_OUT,
IF_DET_CEXT....................................... -0.3V to (VCC + 0.3V)
RFMAIN, RFDIV, LO1, LO2 Input Power........................+20dBm
Continuous Power Dissipation (Note 1)...............................8.7W
Operating Case Temperature Range (Note 2)... -40°C to +105°C
Maximum Junction Temperature......................................+150°C
Storage Temperature Range............................. -65°C to +150°C
Lead Temperature (soldering 10s)...................................+300°C
Soldering Temperature (reflow)........................................+260°C
Note 1: Based on junction temperature TJ = TC + (θJC x VCC x ICC). This formula can be used when the temperature of the
exposed pad is known while the device is soldered down to a PCB. See the Applications Information section for details. The
junction temperature must not exceed +150°C.
Note 2:TC is the temperature on the exposed pad of the package. TA is the ambient temperature of the device and PCB.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Package Thermal Characteristics
TQFN
Junction-to-Ambient Thermal Resistance θJA
(Notes 3, 4).................................................................+36°C/W
Junction-to-Case Thermal Resistance θJC
(Notes 1, 4)................................................................+7.4°C/W
Note 3: Junction temperature TJ = TA + (θJA x VCC x ICC). This formula can be used when the ambient temperature of the PCB is
known. The junction temperature must not exceed +150°C.
Note 4: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
5V DC Electrical Characteristics
(Typical Application Circuit, VCC = 4.75V to 5.25V, R1 = 4.87kΩ, R3 = 154kΩ to VCC, RF and IF single ended ports = 50Ω to GND,
LO1 port driven from 50Ω source, PLO = 0dBm, fLO = 2350MHz, LOSEL = 5V, LO_TUNE1 = LO_TUNE2 = 1, PD1 = PD2 = STBY = 0,
TC = -40°C to +105°C. Typical values are at VCC = 5.0V, PLO = 0dBm, fLO = 2350MHz, LO_TUNE1 = LO_TUNE2 = 1, TC = +25°C,
unless otherwise noted.) (Notes 5, 6)
PARAMETER
Supply Voltage
Dual-Channel Operation
Supply Current
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SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
4.75
5.00
5.25
V
fLO = 1800MHz,
LO_TUNE1 = 0, LO_TUNE2 = 1
350
420
fLO = 1900MHz,
LO_TUNE1 = 0, LO_TUNE2 = 1
324
395
fLO = 2100MHz,
LO_TUNE1 = 0, LO_TUNE2 = 0
305
365
fLO = 2300MHz,
LO_TUNE1 = 1, LO_TUNE2 = 1
293
350
fLO = 2350MHz,
LO_TUNE1 = 1, LO_TUNE2 = 1
290
350
fLO = 2500MHz,
LO_TUNE1 = 1, LO_TUNE2 = 0
285
345
Vcc
IDUALCH
mA
Maxim Integrated │ 2
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
5V DC Electrical Characteristics (continued)
(Typical Application Circuit, VCC = 4.75V to 5.25V, R1 = 4.87kΩ, R3 = 154kΩ to VCC, RF and IF single ended ports = 50Ω to GND,
LO1 port driven from 50Ω source, PLO = 0dBm, fLO = 2350MHz, LOSEL = 5V, LO_TUNE1 = LO_TUNE2 = 1, PD1 = PD2 = STBY = 0,
TC = -40°C to +105°C. Typical values are at VCC = 5.0V, PLO = 0dBm, fLO = 2350MHz, LO_TUNE1 = LO_TUNE2 = 1, TC = +25°C,
unless otherwise noted.) (Notes 5, 6)
PARAMETER
Single-Channel Operation
Supply Current
Power-Down Supply Current
Standby (STBY) Supply Current
SYMBOL
MIN
TYP
MAX
UNITS
163
197
mA
PD1 = 1, PD2 = 0
5.3
8.5
mA
STBY = 1 in any power-down mode
35
49
mA
ISINGLECH PD1 = 0, PD2 = 1 or PD1 = 1, PD2 = 1
IPD
ISTBY
LOSEL, PD1, PD2, STBY,
LO_TUNE1, LO_TUNE2,
Input High Voltage
VIH
LOSEL, PD1, PD2, STBY
LO_TUNE1, LO_TUNE2,
Input Low Voltage
VIL
Control Logic Input Current
CONDITIONS
IIL and IIH
1.17
VIL > -0.25; VIH < VCC + 0.25V;
internal 50kΩ pulldown resistors
V
-50
0.5
V
+250
µA
3.3V DC Electrical Characteristics
(Typical Application Circuit, VCC = 3.1V to 3.5V, R1 = 4.87kΩ, R3 = 154kΩ to VCC, RF and IF single-ended ports = 50Ω to GND, LO1
port driven from 50Ω source, PLO = 0dBm, fLO = 2350MHz, LOSEL = 5V, LO_TUNE1 = LO_TUNE2 = 1, PD1 = PD2 = STBY = 0,
TC = -40°C to +105°C. Typical values are at VCC = 3.3V, PLO = 0dBm, fLO = 2350MHz, LO_TUNE1 = LO_TUNE2 = 1, TC = +25°C,
unless otherwise noted.) (Notes 5, 6)
PARAMETER
Supply Voltage
Dual-Channel Operation
Supply Current
Single-Channel Operation
Supply Current
Power-Down Supply Current
Standby (STBY) Supply Current
SYMBOL
CONDITIONS
VCC
IDUALCH
Total supply current
ISINGLECH PD1 = 0, PD2 = 1 or PD1 = 1, PD2 = 1
IPD
ISTBY
MIN
TYP
MAX
UNITS
3.1
3.3
3.5
V
305
385
mA
163
mA
PD1 = 1, PD2 = 0
3.5
mA
STBY = 1 in any power-down mode
33
mA
LOSEL, PD1, PD2, STBY,
LO_TUNE1, LO_TUNE2,
Input High Voltage
VIH
1.0
V
LOSEL, PD1, PD2, STBY,
LO_TUNE1, LO_TUNE2,
Input Low Voltage
VIL
0.75
V
Control Logic Input Current
IIL and IIH
0 to 100
µA
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VIL > -0.25; VIH < VCC + 0.25V;
internal 50kΩ pulldown resistors
Maxim Integrated │ 3
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
Recommended AC Operating Conditions
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
RF Frequency
fRF
(Note 7)
1700
2700
MHz
LO Frequency
fLO
(Note 7)
1800
2600
MHz
Using Mini-Circuits TC4-1W-17 4:1
transformer as defined in the Typical
Application Circuit; IF matching components
affect the IF frequency range
100
500
Using alternative Mini-Circuits
TC4-1W-7A 4:1 transformer as defined in
the Typical Application Circuit, IF matching
components affect the IF frequency range
50
250
-3
+3
IF Frequency (Note 7)
LO Drive Level
fIF
PLO
MHz
dBm
5V AC Electrical Characteristics (Low-Side LO)
(Typical Application Circuit, R1 = 4.87kΩ, R3 = 154kΩ to VCC, VCC = 4.75V to 5.25V, RF and LO ports are driven from 50Ω sources,
PRF = -5dBm, fRF = 2550MHz, fLO = 2350MHz, fIF = 200MHz, PLO1 = -3dBm to +3dBm, LOSEL = 1, LO_TUNE1 = LO_TUNE2 = 1,
PD1 = PD2 = STBY = 0, TC = -40°C to +105°C. Typical values are at VCC = 5.0V, PRF = -5dBm, PLO = 0dBm, fRF = 2550MHz,
fLO = 2350MHz, LO_TUNE1 = LO_TUNE2 = 1, fIF = 200MHz, and TC = +25°C.) (Notes 5, 6)
PARAMETER
Conversion Gain
SYMBOL
GC
RF Gain Flatness
CONDITIONS
TC = +25°C
MIN
TYP
MAX
7.4
8.8
9.9
8.1
8.8
9.7
Flatness over any 120MHz portion of the RF
band, fIF = 200MHz
0.10
0.34
UNITS
dB
dB
Conversion Gain Flatness
GFREQ
Flatness over a 100MHz RF band,
fIF = 200 ±50MHz (Note 9)
Gain Variation Over Temperature
TCCG
TC = -40°C to +105°C
-0.010
dB/°C
TC = -40°C to +105°C
0.082
dB
1σ Gain Deviation
0.55
dB
Input 1dB Compression Point
IP1dB
(Notes 8, 9)
11
13.1
dBm
Output 1dB Compression Point
OP1dB
(Notes 8, 9)
17
20.9
dBm
Input 0.1dB Compression Point
IP0.1dB
(Note 9)
4
5.6
dBm
0.4
dB
Small-Signal Compression Under
Blocking Conditions
PRF = -5dBm, fBLOCKER = 2545MHz,
PBLOCKER = 8dBm (Note 8)
fRF1-fRF2 = 1MHz,
PRF = -5dBm/tone
(Notes 9,10)
TC = +25°C
23.9
25.3
23.5
25.3
Input Third-Order Intercept Point
IIP3
Input Third-Order Intercept Point
1σ Deviation
IIP3dev
fRF1-fRF2 = 1MHz, PRF = -5dBm/tone
0.17
dBm
Input Third-Order Intercept Point
Variation Over Temperature
TCIIP3
fRF1-fRF2 = 1MHz, PRF = -5dBm/tone,
TC = -40°C to +105°C
0.0035
dB/°C
Output Third-Order Intercept
Point
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OIP3
fRF1-fRF2 = 1MHz,
PRF = -5dBm/tone
(Notes 9, 10)
TC = +25°C
30.8
34.1
30.4
34.1
dBm
dBm
Maxim Integrated │ 4
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
5V AC Electrical Characteristics (Low-Side LO) (continued)
(Typical Application Circuit, R1 = 4.87kΩ, R3 = 154kΩ to VCC, VCC = 4.75V to 5.25V, RF and LO ports are driven from 50Ω sources,
PRF = -5dBm, fRF = 2550MHz, fLO = 2350MHz, fIF = 200MHz, PLO1 = -3dBm to +3dBm, LOSEL = 1, LO_TUNE1 = LO_TUNE2 = 1,
PD1 = PD2 = STBY = 0, TC = -40°C to +105°C. Typical values are at VCC = 5.0V, PRF = -5dBm, PLO = 0dBm, fRF = 2550MHz,
fLO = 2350MHz, LO_TUNE1 = LO_TUNE2 = 1, fIF = 200MHz, and TC = +25°C.) (Notes 5, 6)
PARAMETER
SYMBOL
Noise Figure, Single Sideband
(Note 9)
NFSSB
Noise Figure Temperature
Coefficient
TCNF
1σ NF deviation
NFSTD
TYP
MAX
TC = +25°C, no blockers present, RF trace
de-embedded
CONDITIONS
MIN
10.4
10.9
No blockers present, RF trace deembedded, TC = -40°C to +100°C
10.4
12.2
dB
Single sideband, no blockers present,
TC = -40°C to +105°C
Noise Figure with Blocker
NFB
PBLOCKER = 8dBm, fBLOCKER = 2300MHz,
fRF = 2200MHz, fLO = 1950MHz,
fIFDESIRED = 250MHz, fIFBLOCKER =
350MHz PLO = 0dBm, VCC = 5.0V,
TC = +25°C (Notes 9, 11)
2RF - 2LO Spur Rejection
(Note 9)
2x2
fSPUR = fLO +
100MHz
3RF - 3LO Spur Rejection
(Note 9)
3x3
fSPUR = fLO +
66.667MHz
UNITS
0.0166
dB/°C
0.09
dB
18.3
PRF = -10dBm
63
73
PRF = -5dBm
(Note 10)
58
68
PRF = -10dBm
75
91
PRF = -5dBm
(Note 10)
65
81
20
dB
dBc
dBc
LO Leakage at RF Port
PLO = 3dBm (Note 9)
-39.8
-34
dBm
2LO Leakage at RF Port
PLO = 3dBm (Note 9)
-24.3
-20
dBm
3LO Leakage at RF Port
PLO = 3dBm (Note 9)
-46
-40
dBm
4LO Leakage at RF Port
PLO = 3dBm (Note 9)
-31
-22
dBm
LO Leakage at IF Port
PLO = 3dBm (Notes 9, 10)
-25.5
-23
dBm
LO Leakage at IF Port
PLO = 3dBm, FLO = 2150MHz, (Note 10)
-19.9
dBm
2LO Leakage at IF Port
PLO = 3dBm
-37
dBm
RF to IF Isolation
(Notes 9, 10)
30
37.3
dB
LO1 to LO2 Isolation
PLO1 = 3dBm, PLO2 = 3dBm, fLO1-fLO2 =
1MHz, PRF = -5dBm (Note 12)
30
50
dB
Channel-to-Channel Isolation
PRF = -10dBm, RFMAIN (RFDIV) power
measured at IFDIV (IFMAIN), relative to
IFMAIN (IFDIV), all unused ports terminated
to 50Ω (Notes 9, 10)
40
46
dB
LO Switching Time
50% of LOSEL to IF settled within two
degrees
0.24
µs
Power-Down IF Attenuation
0dBm at RF & LO ports; IF output power
reduction from PD1 and PD2 switched from
0 to 1
61
dB
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40
Maxim Integrated │ 5
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
5V AC Electrical Characteristics (Low-Side LO) (continued)
(Typical Application Circuit, R1 = 4.87kΩ, R3 = 154kΩ to VCC, VCC = 4.75V to 5.25V, RF and LO ports are driven from 50Ω sources,
PRF = -5dBm, fRF = 2550MHz, fLO = 2350MHz, fIF = 200MHz, PLO1 = -3dBm to +3dBm, LOSEL = 1, LO_TUNE1 = LO_TUNE2 = 1,
PD1 = PD2 = STBY = 0, TC = -40°C to +105°C. Typical values are at VCC = 5.0V, PRF = -5dBm, PLO = 0dBm, fRF = 2550MHz,
fLO = 2350MHz, LO_TUNE1 = LO_TUNE2 = 1, fIF = 200MHz, and TC = +25°C.) (Notes 5, 6)
PARAMETER
SYMBOL
CONDITIONS
Power-Down Time
PD1 and PD2 switched from 0 to 1. Settled
to within 5% of the final power down DC
current.
Power-Down Recovery Time
PD1 and PD2 switched from 1 to 0. The
‘on’ state is defined as IF phase settled to
within < ±1° of the final value in a static
measurement.
STBY Time
STBY Recovery Time
RF Input Impedance
LO Input Impedance
IF Output Impedance
IF Return Loss
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UNITS
0.55
µs
STBY switched from 0 to 1. Settled to within
5% of the final shutdown DC current.
20
ns
STBY switched from 1 to 0. The ‘on’ state is
defined as IF phase settled to within
< ±1° of the final value in a static
measurement.
0.5
µs
50
Ω
20
dB
50
Ω
ZLO
ZIF
MAX
ns
LO on and IF terminated
LO Return Loss
TYP
20
ZRF
RF Return Loss
MIN
LO port selected
16
LO port unselected
17
Nominal differential impedance at the IC’s
IF outputs
200
Ω
RF terminated into 50Ω, LO driven by
50Ω source, IF transformed to 50Ω using
external components shown in the Typical
Application Circuit
30
dB
dB
Maxim Integrated │ 6
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
5V AC Electrical Characteristics (High-Side LO)
(Typical Application Circuit, R1 = 4.87kΩ, R3 = 154kΩ to VCC, VCC = 4.75V to 5.25V, RF and LO ports are driven from 50Ω sources,
PLO1 = -3dBm to +3dBm, PRF = -5dBm, fRF = 2150MHz, fLO = 2350MHz, fIF = 200MHz, LOSEL = 1, LO_TUNE1 = LO_TUNE2 = 1,
PD1 = PD2 = STBY = 0, TC = -40°C to +105°C. Typical values are at VCC = 5.0V, PRF = -5dBm, PLO = 0dBm, fRF = 2150MHz,
fLO = 2350MHz, LO_TUNE1 = LO_TUNE2 = 1, fIF = 200MHz, and TC = +25°C.) (Notes 5, 6)
PARAMETER
Conversion Gain
SYMBOL
GC
RF Gain Flatness
CONDITIONS
TC = +25°C
MIN
TYP
MAX
7.7
9.2
10.2
8.4
9.2
10.1
UNITS
dB
Flatness over any 120MHz portion of the RF
band, fIF = 200MHz
0.10
dB
0.4
dB
-0.010
dB/°C
0.08
dB
Conversion Gain Flatness
GFREQ
Flatness over a 100MHz RF band,
fIF = 200 ±50MHz
Gain Variation Over Temperature
TCCG
TC = -40°C to +105°C
1σ Gain Deviation
Input 1dB Compression Point
IP1dB
(Notes 8, 9)
10.3
12.6
dBm
Output 1dB Compression Point
OP1dB
(Notes 8, 9)
17.0
20.8
dBm
Input 0.1dB Compression Point
IP0.1dB
7.1
dBm
PRF = -5dBm, fBLOCKER = 2155MHz
PBLOCKER = 8dBm (Note 8)
0.4
dB
Small-Signal Compression Under
Blocking Conditions
Input Third-Order Intercept Point
IIP3
fRF1 - fRF2 = 1MHz, PRF = -5dBm/tone
24.7
dBm
Input Third-Order Intercept Point
1σ Deviation
IIP3dev
fRF1 - fRF2 = 1MHz, PRF = -5dBm/tone
0.15
dBm
Input Third-Order Intercept Point
Variation Over Temperature
TCIIP3
fRF1 - fRF2 = 1MHz, PRF = -5dBm/tone,
TC = -40°C to +105°C
-0.01
dB/°C
OIP3
fRF1 - fRF2 = 1MHz, PRF = -5dBm/tone
34
dBm
Output Third-Order Intercept
Point
Noise Figure, Single Sideband
NFSSB
No blockers present
10.0
dB
Noise Figure Temperature
Coefficient
TCNF
Single sideband, no blockers present,
TC = -40°C to +105°C
0.017
dB/°C
Noise Figure with Blocker
NFB
PBLOCKER = 8dBm, fBLOCKER = 1950MHz,
fRF = 2050MHz, fLO = 2300MHz,
fIFDESIRED = 250MHz, fIFBLOCKER =
350MHz (Note 11)
18.4
dB
2LO – 2RF Spur Rejection
2x2
fSPUR = fLO 100MHz
PRF = -10dBm
85
dBc
PRF = -5dBm
80
dBc
fSPUR = fLO 66.667MHz
PRF = -10dBm
85.5
dBc
PRF = -5dBm
3LO – 3RF Spur Rejection
3x3
75.5
dBc
LO Leakage at RF Port
PLO = 3dBm
-40
dBm
2LO Leakage at RF Port
PLO = 3dBm
-24
dBm
3LO Leakage at RF Port
PLO = 3dBm
-40
dBm
4LO Leakage at RF Port
PLO = 3dBm
-30
dBm
LO Leakage at IF Port
PLO = 3dBm (Note 10)
-25.5
dBm
2LO Leakage at IF Port
PLO = 3dBm
-37
dBm
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Maxim Integrated │ 7
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
5V AC Electrical Characteristics (High-Side LO) (continued)
(Typical Application Circuit, R1 = 4.87kΩ, R3 = 154kΩ to VCC, VCC = 4.75V to 5.25V, RF and LO ports are driven from 50Ω sources,
PLO1 = -3dBm to +3dBm, PRF = -5dBm, fRF = 2150MHz, fLO = 2350MHz, fIF = 200MHz, LOSEL = 1, LO_TUNE1 = LO_TUNE2 = 1,
PD1 = PD2 = STBY = 0, TC = -40°C to +105°C. Typical values are at VCC = 5.0V, PRF = -5dBm, PLO = 0dBm, fRF = 2150MHz,
fLO = 2350MHz, LO_TUNE1 = LO_TUNE2 = 1, fIF = 200MHz, and TC = +25°C.) (Notes 5, 6)
PARAMETER
SYMBOL
CONDITIONS
RF to IF Isolation
(Note 10)
LO1 to LO2 Isolation
PLO1 = 3dBm, PLO2 = 3dBm,
fLO1 - fLO2 = 1MHz, PRF = -5dBm
(Note 12)
Channel-to-Channel Isolation
PRF = -10dBm, RFMAIN (RFDIV) power
measured at IFDIV (IFMAIN), relative to
IFMAIN (IFDIV), all unused ports terminated
to 50Ω, (Note 10)
LO Switching Time
50% of LOSEL to IF settled within two
degrees
Power-Down IF Attenuation
0dBm at RF & LO ports;
IF output power reduction from
PD1 and PD2 switched from 0 to 1
Power-Down Time
PD1 and PD2 switched from 0 to 1. Settled
to within 5% of the final power down DC
current.
Power-Down Recovery Time
PD1 and PD2 switched from 1 to 0. The
‘on’ state is defined as IF phase settled to
within < ±1° of the final value in a static
measurement.
STBY Time
STBY Recovery Time
RF Input Impedance
LO Input Impedance
IF Output Impedance
IF Return Loss
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UNITS
50
dB
50
dB
0.24
µs
61
dB
20
ns
0.55
µs
STBY switched from 0 to 1. Settled to within
5% of the final shutdown DC current.
20
ns
STBY switched from 1 to 0. The ‘on’ state is
defined as IF phase settled to within < ±1°
of the final value in a static measurement.
0.5
µs
ZLO
ZIF
MAX
dB
LO on and IF terminated
LO Return Loss
TYP
34
ZRF
RF Return Loss
MIN
30
40
50
Ω
20
dB
50
Ω
LO port selected
16
LO port unselected
17
Nominal differential impedance at the IC’s
IF outputs
200
Ω
RF terminated into 50Ω, LO driven by
50Ω source, IF transformed to 50Ω using
external components shown in the Typical
Application Circuit.
30
dB
dB
Maxim Integrated │ 8
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
3.3V AC Electrical Characteristics (Low-Side LO)
(Typical Application Circuit, R1 = 4.87kΩ, R3 = 154kΩ to VCC, RF and LO ports are driven from 50Ω sources. Typical values are at
VCC = 5.0V, PRF = -5dBm, PLO = 0dBm, fRF = 2550MHz, fLO = 2350MHz, fIF = 200MHz LO_TUNE1 = LO_TUNE2 = 1, PD1 = PD =
STBY = 0, and TC = +25°C.) (Note 6)
PARAMETER
Conversion Gain
SYMBOL
CONDITIONS
GC
MIN
TYP
MAX
UNITS
8.9
dB
Gain Variation Over Temperature
TCCG
TC = -40°C to +105°C
0.011
dB/°C
Input 1dB Compression Point
IP1dB
(Note 8)
10.2
dBm
Output 1dB Compression Point
OP1dB
(Note 8)
18.1
dBm
Input Third-Order Intercept Point
IIP3
fRF1 - fRF2 = 1MHz, PRF = -5dBm/tone
24.1
dBm
Output Third-Order Intercept
Point
OIP3
fRF1 - fRF2=1MHz, PRF = -5dBm/tone
33
dBm
10.3
dB
Noise Figure, Single Sideband
2RF - 2LO Spur Rejection
3RF - 3LO Spur Rejection
NFSSB
2x2
3x3
No blockers present, RF trace deembedded
fSPUR = fLO +
100MHz
PRF = -10dBm
71
dBc
PRF = -5dBm
66
dBc
fSPUR = fLO +
66.667MHz
PRF = -10dBm
82
dBc
PRF = -5dBm
72
dBc
LO Leakage at RF Port
PLO = 3dBm
-36.6
dBm
2LO Leakage at RF Port
PLO = 3dBm
-22.6
dBm
LO Leakage at IF Port
PLO = 3dBm
-26.3
dBm
35.6
dB
Channel-to-Channel Isolation
PRF = -10dBm, RFMAIN (RFDIV) power
measured at IFDIV (IFMAIN), relative to
IFMAIN (IFDIV), all unused ports terminated
to 50Ω
45.6
dB
LO Switching Time
50% of LOSEL to IF settled within two
degrees
0.24
us
50
Ω
20
dB
50
Ω
RF to IF Isolation
RF Input Impedance
ZRF
RF Return Loss
LO Input Impedance
LO on and IF terminated
ZLO
LO Return Loss
IF Output Impedance
IF Return Loss
www.maximintegrated.com
ZIF
LO port selected
16
LO port unselected
17
Nominal differential impedance at the IC’s
IF outputs
200
Ω
RF terminated into 50Ω, LO driven by
50Ω source, IF transformed to 50Ω using
external components shown in the Typical
Application Circuit.
30
dB
dB
Maxim Integrated │ 9
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
Note 5: Production tested and guaranteed at TC = +25°C for worst-case supply voltage. Performance at TC = -40°C and +105°C
are guaranteed by production test characterization.
Note 6: All limits reflect 0.35dB loss for RF connectors and PCB RF trace, and 0.7dB loss for the IF transformer unless otherwise
noted .Output measurements taken at IF outputs with the Typical Application Circuit.
Note 7: Not production tested. Operation outside this range is possible, but with degraded performance of some parameters. See
Typical Operating Characteristics.
Note 8: Maximum reliable continuous input power applied to the RF or LO port of this device is 15dBm from a 50Ω source.
Note 9: Guaranteed by design and characterization. GBDC limits are 6-sigma.
Note 10:100% production tested for functionality.
Note 11:Measured with external LO source noise filtered so the noise floor is -174dBm/Hz. This specification reflects the effects of
all SNR degradations in the mixer, including the LO noise as defined in Maxim Application Note 2021: Specifications and
Measurement of Local Oscillator Noise in Integrated Circuit Base Station Mixers.
Note 12:Measured at IF port at IF frequency. LOSEL may be in either logic state.
www.maximintegrated.com
Maxim Integrated │ 10
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
Typical Operating Characteristics
(Typical Application Circuit, VCC = 5.0V, fRF = 2000MHz to 2700MHz, LO is low-side injected for a 200MHz IF, PRF = -5dBm,
PLO = 0dBm, TC = +25°C, LO1 driven, LOSEL= 5V, STBY = PD1 = PD2 = GND, LOTUNE1 and LOTUNE2 set per Table 2, unless
otherwise noted.)
TC = +25°C
7
PLO = -3dBm, 0dBm, +3dBm
8
7
2350
2525
6
2700
2000
RF FREQUENCY (MHz)
TC = +105°C
25
TC = +25°C
2175
2350
2525
25
PLO = -3dBm, 0dBm, 3dBm
23
2700
TC = +25°C
9
TC = -40°C
8
7
2000
2175
2350
2525
RF FREQUENCY (MHz)
www.maximintegrated.com
2350
2525
MAX19757 toc03
VCC = 5.0V
VCC = 4.75V
2000
10
PLO = -3dBm, 0dBm, +3dBm
8
2700
7
2175
2350
2525
2700
RF FREQUENCY (MHz)
11
9
2700
25
23
2700
NOISE FIGURE vs. RF FREQUENCY
12
NOISE FIGURE (dB)
NOISE FIGURE (dB)
TC = +85°C
10
2175
2525
VCC = 5.25V
24
2000
2350
PRF = -5dBm / TONE
26
13
MAX19757 toc08
MAX19757 toc07
TC = +105°C
11
13
2175
INPUT IP3 vs. RF FREQUENCY
27
RF FREQUENCY (MHz)
NOISE FIGURE vs. RF FREQUENCY
12
2000
RF FREQUENCY (MHz)
PRF = -5dBm/TONE
RF FREQUENCY (MHz)
13
VCC = 4.75V, 5.0V, 5.25V
8
6
2700
24
TC = -40°C
2000
2525
26
INPUT IP3 (dBm)
INPUT IP3 (dBm)
26
23
2350
INPUT IP3 vs. RF FREQUENCY
27
MAX19757 toc04
PRF = -5dBm/TONE
24
9
RF FREQUENCY (MHz)
INPUT IP3 vs. RF FREQUENCY
27
2175
INPUT IP3 (dBm)
2175
NOISE FIGURE vs. RF FREQUENCY
12
NOISE FIGURE (dB)
2000
10
7
MAX19757 toc05
6
9
CONVERSION GAIN vs. RF FREQUENCY
MAX19757 toc06
TC = +105°C
10
11
MAX19757 toc09
8
CONVERSION GAIN vs. RF FREQUENCY
CONVERSION GAIN (dB)
9
CONVERSION GAIN (dB)
CONVERSION GAIN (dB)
TC = -40°C
10
11
MAX19757 toc02
CONVERSION GAIN vs. RF FREQUENCY
MAX19757 toc01
11
11
10
VCC = 4.75V, 5.0V, 5.25V
9
8
2000
2175
2350
2525
RF FREQUENCY (MHz)
2700
7
2000
2175
2350
2525
2700
RF FREQUENCY (MHz)
Maxim Integrated │ 11
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
Typical Operating Characteristics (continued)
(Typical Application Circuit, VCC = 5.0V, fRF = 2000MHz to 2700MHz, LO is low-side injected for a 200MHz IF, PRF = -5dBm,
PLO = 0dBm, TC = +25°C, LO1 driven, LOSEL= 5V, STBY = PD1 = PD2 = GND, LOTUNE1 and LOTUNE2 set per Table 2, unless
otherwise noted.)
60
2350
2525
2350
2525
95
PRF = -5dBm
85
PLO = -3dBm, 0dBm, +3dBm
65
2000
12
2350
2525
2350
2525
13
12
PLO = -3dBm, 0dBm, +3dBm
11
2350
2525
RF FREQUENCY (MHz)
www.maximintegrated.com
75
VCC = 4.75V, 5.0V, 5.25V
65
2000
2700
10
2175
2350
2525
2700
RF FREQUENCY (MHz)
INPUT P1dB vs. RF FREQUENCY
15
MAX19757 toc17
14
2700
PRF = -5dBm
85
55
2700
INPUT P1dB vs. RF FREQUENCY
15
MAX19757 toc16
11
2175
95
RF FREQUENCY (MHz)
TC = +25°C
TC = -40°C
2175
MAX19757 toc12
MAX19757 toc11
75
55
2700
INPUT P1dB (dBm)
INPUT P1dB (dBm)
TC = +105°C
2000
2175
MAX19757 toc18
2175
TC = +25°C
13
10
2000
3RF - 3LO RESPONSE
vs. RF FREQUENCY
INPUT P1dB vs. RF FREQUENCY
14
50
2700
3RF - 3LO RESPONSE
vs. RF FREQUENCY
RF FREQUENCY (MHz)
15
2525
60
3RF - 3LO RESPONSE
vs. RF FREQUENCY
TC = -40°C
2000
2350
VCC = 4.75V, 5.0V, 5.25V
RF FREQUENCY (MHz)
75
55
2175
70
RF FREQUENCY (MHz)
TC = +105°C
65
2000
PRF = -5dBm
RF FREQUENCY (MHz)
PRF = -5dBm
85
60
50
2700
PLO = -3dBm
3RF - 3LO RESPONSE (dBc)
95
2175
PLO = 0dBm
80
14
INPUT P1dB (dBm)
2000
70
MAX19757 toc14
50
3RF - 3LO RESPONSE (dBc)
TC = +25°C
PRF = -5dBm
2RF - 2LO RESPONSE
vs. RF FREQUENCY
MAX19757 toc15
TC = -40°C
PLO = +3dBm
2RF - 2LO RESPONSE (dBc)
70
MAX19757 toc13
2RF - 2LO RESPONSE (dBc)
TC = +105°C
2RF - 2LO RESPONSE
vs. RF FREQUENCY
80
2RF - 2LO RESPONSE (dBc)
PRF = -5dBm
3RF - 3LO RESPONSE (dBc)
80
MAX19757 toc10
2RF - 2LO RESPONSE
vs. RF FREQUENCY
VCC = 5.25V
13
VCC = 5.0V
12
VCC = 4.75V
11
2000
2175
2350
2525
RF FREQUENCY (MHz)
2700
10
2000
2175
2350
2525
2700
RF FREQUENCY (MHz)
Maxim Integrated │ 12
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
Typical Operating Characteristics (continued)
(Typical Application Circuit, VCC = 5.0V, fRF = 2000MHz to 2700MHz, LO is low-side injected for a 200MHz IF, PRF = -5dBm,
PLO = 0dBm, TC = +25°C, LO1 driven, LOSEL= 5V, STBY = PD1 = PD2 = GND, LOTUNE1 and LOTUNE2 set per Table 2, unless
otherwise noted.)
TC = +25°C
TC = +105°C
40
35
2175
2350
2525
2000
2175
2350
2525
2150
2325
-20
PLO = -3dBm, 0dBm, +3dBm
-30
-40
2500
1800
30
TC = -40°C
2175
TC = +105°C
2350
2525
RF FREQUENCY (MHz)
www.maximintegrated.com
2700
2325
MAX19757 toc24
VCC = 4.75V, 5.0V, 5.25V
-30
-40
2500
1800
RF-TO-IF ISOLATION vs. RF FREQUENCY
40
PLO = -3dBm, 0dBm, +3dBm
30
20
2000
2175
2350
2525
RF FREQUENCY (MHz)
1975
2150
2325
2500
LO FREQUENCY (MHz)
MAX19757 toc26
50
RF-TO-IF ISOLATION (dB)
TC = +25°C
2150
-20
LO FREQUENCY (MHz)
RF-TO-IF ISOLATION vs. RF FREQUENCY
40
1975
-10
LO LEAKAGE AT IF PORT (dBm)
-10
2700
2700
50
RF-TO-IF ISOLATION vs. RF FREQUENCY
MAX19757 toc27
1975
MAX19757 toc25
RF-TO-IF ISOLATION (dB)
30
2700
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
LO FREQUENCY (MHz)
2000
2525
35
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
-30
20
2350
40
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
TC = -40°C, +25°C, +105°C
50
2175
MAX19757 toc21
MAX19757 toc20
2000
VCC = 4.75V, 5.0V, 5.25V
RF FREQUENCY (MHz)
MAX19757 toc22
LO LEAKAGE AT IF PORT (dBm)
35
45
RF FREQUENCY (MHz)
-20
1800
40
30
2700
PLO = -3dBm, 0dBm, +3dBm
50
RF FREQUENCY (MHz)
-10
-40
45
55
RF-TO-IF ISOLATION (dB)
2000
50
MAX19757 toc23
30
CHANNEL ISOLATION
vs. RF FREQUENCY
CHANNEL ISOLATION (dB)
45
CHANNEL ISOLATION (dB)
TC = -40°C
50
55
LO LEAKAGE AT IF PORT (dBm)
CHANNEL ISOLATION (dB)
55
CHANNEL ISOLATION
vs. RF FREQUENCY
MAX19757 toc19
CHANNEL ISOLATION
vs. RF FREQUENCY
40
VCC = 4.75V, 5.0V, 5.25V
30
20
2000
2175
2350
2525
2700
RF FREQUENCY (MHz)
Maxim Integrated │ 13
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
Typical Operating Characteristics (continued)
(Typical Application Circuit, VCC = 5.0V, fRF = 2000MHz to 2700MHz, LO is low-side injected for a 200MHz IF, PRF = -5dBm,
PLO = 0dBm, TC = +25°C, LO1 driven, LOSEL= 5V, STBY = PD1 = PD2 = GND, LOTUNE1 and LOTUNE2 set per Table 2, unless
otherwise noted.)
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
TC = -40°C
TC = +105°C
2400
2100
2400
2700
MAX19757 toc31
TC = +105°C
-20
-30
TC = -40°C
TC = +25°C
-40
-50
1800
2100
2400
2700
LO FREQUENCY (MHz)
2LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
2LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
PLO = -3dBm, 0dBm, +3dBm
-40
2100
2400
LO FREQUENCY (MHz)
www.maximintegrated.com
-10
2700
-30
1800
2400
LO FREQUENCY (MHz)
2700
-10
MAX19757 toc33
-20
-50
2100
2LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX19757 toc32
-10
1800
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
VCC = 4.75V, 5.0V, 5.25V
1800
PLO = -3dBm, 0dBm, +3dBm
-45
LO FREQUENCY (MHz)
-40
-50
-40
LO FREQUENCY (MHz)
-35
-45
-35
-50
2700
MAX19757 toc30
LO LEAKAGE AT RF PORT (dBm)
-30
2100
2LO LEAKAGE AT RF PORT (dBm)
1800
2LO LEAKAGE AT RF PORT (dBm)
-45
-50
2LO LEAKAGE AT RF PORT (dBm)
TC = +25°C
-40
MAX19757 toc29
-35
-30
LO LEAKAGE AT RF PORT (dBm)
MAX19757 toc28
LO LEAKAGE AT RF PORT (dBm)
-30
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
-20
-30
VCC = 4.75V, 5.0V, 5.25V
-40
-50
1800
2100
2400
2700
LO FREQUENCY (MHz)
Maxim Integrated │ 14
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
Typical Operating Characteristics (continued)
(Typical Application Circuit, VCC = 5.0V, fRF = 2000MHz to 2700MHz, LO is low-side injected for a 200MHz IF, PRF = -5dBm,
PLO = 0dBm, TC = +25°C, LO1 driven, LOSEL= 5V, STBY = PD1 = PD2 = GND, LOTUNE1 and LOTUNE2 set per Table 2, unless
otherwise noted.)
10
TUNE 0,1
TUNE 1,1
20
TUNE 1,0
30
IF PORT RETURN LOSS
vs. IF FREQUENCY
0
LO = 2350MHz
10
20
30
TUNE 0,0
40
2000
2175
2350
2525
40
2700
50
10
15
400
SUPPLY CURRENT (mA)
MAX19757 toc36
5
320
410
500
SUPPLY CURRENT vs. LO FREQUENCY
350
300
TUNE 0,1
20
25
230
MAX19757 toc37
LO PORT RETURN LOSS
vs. LO FREQUENCY
0
140
IF FREQUENCY (MHz)
RF FREQUENCY (MHz)
LO PORT RETURN LOSS (dB)
MAX19757 toc35
IF = 200MHz
IF PORT RETURN LOSS (dB)
RF PORT RETURN LOSS (dB)
0
MAX19757 toc34
RF PORT RETURN LOSS
vs. RF FREQUENCY
TUNE 0,0
1500
1700
1900
2100
LO FREQUENCY (MHz)
www.maximintegrated.com
2300
2500
250
TUNE 1,1 TUNE 1,0
1700
1950
2200
2450
2700
LO FREQUENCY (MHz)
Maxim Integrated │ 15
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
Typical Operating Characteristics (continued)
(Typical Application Circuit, VCC = 5.0V, fRF = 1700MHz to 2800MHz, LO is high-side injected for a 200MHz IF, PRF = -5dBm,
PLO = 0dBm, TC = +25°C, LO1 driven, LOSEL= 5V, STBY = PD1 = PD2 = GND, LOTUNE1 and LOTUNE2 set per Table 2, unless
otherwise noted.)
8
6
1700
1975
TC = +25°C
2250
2525
9
PLO = -3dBm, 0dBm, +3dBm
8
7
6
2800
1700
RF FREQUENCY (MHz)
2250
2525
MAX19757 toc40
9
VCC = 4.75V, 5.0V, 5.25V
8
6
2800
1700
25
TC = +25°C
PRF = -5dBm/TONE
PLO = -3dBm, 0dBm, 3dBm
26
24
1975
2250
2525
2800
RF FREQUENCY (MHz)
25
INPUT IP3 vs. RF FREQUENCY
27
PRF = -5dBm/TONE
26
INPUT IP3 (dBm)
TC = +105°C
INPUT IP3 (dBm)
INPUT IP3 (dBm)
1975
INPUT IP3 vs. RF FREQUENCY
27
MAX19757 toc41
PRF = -5dBm/TONE
26
10
RF FREQUENCY (MHz)
INPUT IP3 vs. RF FREQUENCY
27
CONVERSION GAIN vs. RF FREQUENCY
7
MAX19757 toc42
TC = +105°C
7
10
11
24
MAX19757 toc43
9
CONVERSION GAIN vs. RF FREQUENCY
CONVERSION GAIN (dB)
10
CONVERSION GAIN (dB)
TC = -40°C
11
MAX19757 toc39
CONVERSION GAIN vs. RF FREQUENCY
MAX19757 toc38
CONVERSION GAIN (dB)
11
25
VCC = 4.75V, 5.0V, 5.25V
24
TC = -40°C
1975
2250
2525
23
2800
1700
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
11
TC = +85°C
10
TC = +25°C
9
TC = -40°C
8
7
1700
1875
13
2050
RF FREQUENCY (MHz)
www.maximintegrated.com
1700
11
10
PLO = -3dBm, 0dBm, +3dBm
9
2400
7
1975
2250
2525
2800
RF FREQUENCY (MHz)
8
2225
23
2800
NOISE FIGURE vs. RF FREQUENCY
12
NOISE FIGURE (dB)
TC = +105°C
2525
13
MAX19757 toc45
NOISE FIGURE vs. RF FREQUENCY
12
2250
RF FREQUENCY (MHz)
MAX19757 toc44
13
1975
NOISE FIGURE vs. RF FREQUENCY
MAX19757 toc46
1700
12
NOISE FIGURE (dB)
23
11
10
VCC = 4.75V, 5.0V, 5.25V
9
8
1700
1875
2050
2225
RF FREQUENCY (MHz)
2400
7
1700
1875
2050
2225
2400
RF FREQUENCY (MHz)
Maxim Integrated │ 16
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
Typical Operating Characteristics (continued)
(Typical Application Circuit, VCC = 5.0V, fRF = 1700MHz to 2800MHz, LO is high-side injected for a 200MHz IF, PRF = -5dBm,
PLO = 0dBm, TC = +25°C, LO1 driven, LOSEL= 5V, STBY = PD1 = PD2 = GND, LOTUNE1 and LOTUNE2 set per Table 2, unless
otherwise noted.)
1975
2250
2525
2250
2525
90
80
70
PLO = -3dBm, 0dBm, +3dBm
60
50
2800
1975
2250
2525
1700
INPUT P1dB (dBm)
TC = +25°C
TC = -40°C
2250
2525
RF FREQUENCY (MHz)
www.maximintegrated.com
2250
2525
2800
11
70
VCC = 4.75V, 5.0V, 5.25V
60
1700
1975
2250
2525
RF FREQUENCY (MHz)
1975
2250
2525
2800
2800
INPUT P1dB vs. RF FREQUENCY
14
MAX19757 toc54
PLO = -3dBm, 0dBm, +3dBm
1700
MAX19757 toc49
80
RF FREQUENCY (MHz)
13
12
2800
PRF = -5dBm
90
50
2800
INPUT P1dB vs. RF FREQUENCY
14
MAX19757 toc53
13
1975
1975
100
RF FREQUENCY (MHz)
INPUT P1dB vs. RF FREQUENCY
TC = +105°C
INPUT P1dB (dBm)
1700
MAX19757 toc55
1975
PRF = -5dBm
3LO-3RF RESPONSE (dBc)
3LO-3RF RESPONSE (dBc)
100
TC = -40°C
1700
50
2800
3LO - 3RF RESPONSE
vs. RF FREQUENCY
RF FREQUENCY (MHz)
11
2525
VCC = 4.75V, 5.0V, 5.25V
60
3LO - 3RF RESPONSE
vs. RF FREQUENCY
TC = +25°C
12
2250
70
3LO - 3RF RESPONSE
vs. RF FREQUENCY
70
14
1975
80
RF FREQUENCY (MHz)
TC = +105°C
1700
1700
PLO = -3dBm
90
RF FREQUENCY (MHz)
80
50
PLO = 0dBm
60
50
2800
PRF = -5dBm
60
70
PRF = -5dBm
RF FREQUENCY (MHz)
100
90
80
100
VCC = 5.25V
INPUT P1dB (dBm)
1700
90
MAX19757 toc51
50
TC = +25°C
TC = -40°C
3LO-3RF RESPONSE (dBc)
60
PRF = -5dBm
MAX19757 toc52
70
PLO = +3dBm
2LO-2RF RESPONSE (dBc)
80
MAX19757 toc50
2LO-2RF RESPONSE (dBc)
90
100
2LO - 2RF RESPONSE
vs. RF FREQUENCY
MAX19757 toc48
PRF = -5dBm
TC = +105°C
2LO-2RF RESPONSE (dBc)
100
2LO - 2RF RESPONSE
vs. RF FREQUENCY
MAX19757 toc47
2LO - 2RF RESPONSE
vs. RF FREQUENCY
13
VCC = 5.0V
12
11
VCC = 4.75V
1700
1975
2250
2525
2800
RF FREQUENCY (MHz)
Maxim Integrated │ 17
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
Typical Operating Characteristics (continued)
(Typical Application Circuit, VCC = 5.0V, fRF = 1700MHz to 2800MHz, LO is high-side injected for a 200MHz IF, PRF = -5dBm,
PLO = 0dBm, TC = +25°C, LO1 driven, LOSEL= 5V, STBY = PD1 = PD2 = GND, LOTUNE1 and LOTUNE2 set per Table 2, unless
otherwise noted.)
TC = +25°C
40
35
2525
30
2800
MAX19757 toc58
MAX19757 toc57
2525
35
1700
1975
2250
2525
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
2175
2450
2725
-20
-30
PLO = -3dBm, 0dBm, +3dBm
-40
1900
2175
2450
2725
-20
-30
VCC = 4.75V, 5.0V, 5.25V
-40
3000
1900
2175
2450
2725
LO FREQUENCY (MHz)
LO FREQUENCY (MHz)
RF-TO-IF ISOLATION
vs. RF FREQUENCY
RF-TO-IF ISOLATION
vs. RF FREQUENCY
RF-TO-IF ISOLATION
vs. RF FREQUENCY
TC = -40°C, +25°C, +105°C
1975
2250
2525
RF FREQUENCY (MHz)
www.maximintegrated.com
2800
40
30
PLO = -3dBm, 0dBm, +3dBm
20
1700
1975
2250
2525
RF FREQUENCY (MHz)
2800
50
3000
MAX19757 toc64
MAX19757 toc62
LO FREQUENCY (MHz)
50
2800
MAX19757 toc61
-10
LO LEAKAGE AT IF PORT (dBm)
-10
3000
30
1700
2250
40
RF FREQUENCY (MHz)
40
20
1975
VCC = 4.75V, 5.0V, 5.25V
45
RF FREQUENCY (MHz)
TC = -40°C, +25°C, +105°C
50
1700
50
RF FREQUENCY (MHz)
-30
1900
30
2800
-20
-40
RF-TO-IF ISOLATION (dB)
2250
MAX19757 toc59
LO LEAKAGE AT IF PORT (dBm)
-10
1975
35
RF-TO-IF ISOLATION (dB)
1700
40
MAX19757 toc60
30
PLO = -3dBm, 0dBm, +3dBm
45
CHANNEL ISOLATION
vs. RF FREQUENCY
55
CHANNEL ISOLATION (dB)
TC = +105°C
50
MAX19757 toc63
45
CHANNEL ISOLATION (dB)
50
CHANNEL ISOLATION
vs. RF FREQUENCY
55
LO LEAKAGE AT IF PORT (dBm)
CHANNEL ISOLATION (dB)
TC = -40°C
RF-TO-IF ISOLATION (dB)
55
MAX19757 toc56
CHANNEL ISOLATION
vs. RF FREQUENCYY
40
30
VCC = 4.75V, 5.0V, 5.25V
20
1700
1975
2250
2525
2800
RF FREQUENCY (MHz)
Maxim Integrated │ 18
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
Typical Operating Characteristics (continued)
(Typical Application Circuit, VCC = 5.0V, fRF = 1700MHz to 2800MHz, LO is high-side injected for a 200MHz IF, PRF = -5dBm,
PLO = 0dBm, TC = +25°C, LO1 driven, LOSEL= 5V, STBY = PD1 = PD2 = GND, LOTUNE1 and LOTUNE2 set per Table 2, unless
otherwise noted.)
TC = +25°C
TC = -40°C
-45
TC = +105°C
2100
2400
2700
2400
TC = +105°C
-20
-30
TC = -40°C
TC = +25°C
-40
-50
1800
2100
2700
2400
LO FREQUENCY (MHz)
LO FREQUENCY (MHz)
2LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
2LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
PLO = -3dBm, 0dBm, +3dBm
-40
2100
2400
LO FREQUENCY (MHz)
www.maximintegrated.com
-10
2700
-30
1800
2100
2LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
-20
-50
1800
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX19757 toc69
-10
PLO = -3dBm, 0dBm, +3dBm
LO FREQUENCY (MHz)
VCC = 4.75V, 5.0V, 5.25V
1800
-45
-50
2700
-40
-45
-40
LO FREQUENCY (MHz)
-35
-50
2LO LEAKAGE AT RF PORT (dBm)
2400
MAX19757 toc67
LO LEAKAGE AT RF PORT (dBm)
-30
2100
-35
2700
-10
MAX19757 toc70
1800
2LO LEAKAGE AT RF PORT (dBm)
-50
2LO LEAKAGE AT RF PORT (dBm)
-40
MAX19757 toc66
-35
-30
LO LEAKAGE AT RF PORT (dBm)
MAX19757 toc65
LO LEAKAGE AT RF PORT (dBm)
-30
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX19757 toc68
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
-20
-30
VCC = 4.75V, 5.0V, 5.25V
-40
-50
1800
2100
2400
2700
LO FREQUENCY (MHz)
Maxim Integrated │ 19
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
Typical Operating Characteristics (continued)
(Typical Application Circuit, VCC = 5.0V, fRF = 1700MHz to 2800MHz, LO is high-side injected for a 200MHz IF, PRF = -5dBm,
PLO = 0dBm, TC = +25°C, LO1 driven, LOSEL= 5V, STBY = PD1 = PD2 = GND, LOTUNE1 and LOTUNE2 set per Table 2, unless
otherwise noted.)
TUNE 0,1
TUNE 1,1
TUNE 1,0
20
TUNE 0,0
30
40
1700
1975
2250
2525
10
20
30
40
2800
LO = 2350MHz
50
140
230
RF FREQUENCY (MHz)
10
15
500
SUPPLY CURRENT vs. LO FREQUENCY
350
300
TUNE 0,1
20
TUNE 0,0
TUNE 1,1
25
410
MAX19757 toc74
5
400
SUPPLY CURRENT (mA)
MAX19757 toc73
LO PORT RETURN LOSS (dB)
320
IF FREQUENCY (MHz)
LO PORT RETURN LOSS
vs. LO FREQUENCY
0
MAX19757 toc72
10
0
IF PORT RETURN LOSS (dB)
IF = 200MHz
MAX19757 toc71
0
RF PORT RETURN LOSS (dB)
IF PORT RETURN LOSS
vs. IF FREQUENCY
RF PORT RETURN LOSS
vs. RF FREQUENCY
1500
1700
1900
2100
LO FREQUENCY (MHz)
www.maximintegrated.com
2300
2500
250
1700
1950
2200
TUNE 1,0
2450
2700
LO FREQUENCY (MHz)
Maxim Integrated │ 20
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
Typical Operating Characteristics (continued)
(Typical Application Circuit, VCC = 3.3V, fRF = 2000MHz to 2700MHz, LO is low-side injected for a 200MHz IF, PRF = -5dBm,
PLO = 0dBm, TC = +25°C, LO1 driven, LOSEL= 5V, STBY = PD1 = PD2 = GND, LOTUNE1 and LOTUNE2 set per Table 2, unless
otherwise noted.)
8
7
2525
6
2700
2000
RF FREQUENCY (MHz)
INPUT IP3 vs. RF FREQUENCY
PRF = -5dBm/TONE
INPUT IP3 (dBm)
23
TC = -40°C
22
21
25
2175
2350
2525
PRF = -5dBm/TONE
TC = +85°C
10
TC = +25°C
9
TC = -40°C
8
7
2000
2175
2350
2350
2525
2525
MAX19757 toc77
VCC = 3.5V
2700
VCC = 3.3V
13
MAX19757 toc82
10
7
PRF = -5dBm/TONE
VCC = 3.1V
2000
2175
2350
2525
2700
RF FREQUENCY (MHz)
11
PLO = -3dBm, 0dBm, +3dBm
9
2700
23
21
NOISE FIGURE vs. RF FREQUENCY
12
2525
24
2700
8
RF FREQUENCY (MHz)
www.maximintegrated.com
2175
2350
INPUT IP3 vs. RF FREQUENCY
25
22
2000
2175
RF FREQUENCY (MHz)
PLO = -3dBm, 0dBm, 3dBm
13
NOISE FIGURE (dB)
NOISE FIGURE (dB)
11
2000
RF FREQUENCY (MHz)
MAX19757 toc81
TC = +105°C
VCC = 3.1V, 3.3V, 3.5V
8
6
2700
23
21
2700
NOISE FIGURE vs. RF FREQUENCY
12
2525
INPUT IP3 vs. RF FREQUENCY
RF FREQUENCY (MHz)
13
2350
22
TC = +105°C
2000
2175
24
INPUT IP3 (dBm)
TC = +25°C
24
9
RF FREQUENCY (MHz)
MAX19757 toc78
25
10
NOISE FIGURE vs. RF FREQUENCY
MAX19757 toc83
2350
CONVERSION GAIN vs. RF FREQUENCY
7
INPUT IP3 (dBm)
2175
PLO = -3dBm, 0dBm, +3dBm
8
12
NOISE FIGURE (dB)
2000
9
MAX19757 toc79
6
TC = +25°C
TC = +105°C
7
10
11
MAX19757 toc80
9
CONVERSION GAIN vs. RF FREQUENCY
CONVERSION GAIN (dB)
10
CONVERSION GAIN (dB)
CONVERSION GAIN (dB)
TC = -40°C
11
MAX19757 toc76
CONVERSION GAIN vs. RF FREQUENCY
MAX19757 toc75
11
11
10
VCC = 3.1V, 3.3V, 3.5V
9
8
2000
2175
2350
2525
RF FREQUENCY (MHz)
2700
7
2000
2175
2350
2525
2700
RF FREQUENCY (MHz)
Maxim Integrated │ 21
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
Typical Operating Characteristics (continued)
(Typical Application Circuit, VCC = 3.3V, fRF = 2000MHz to 2700MHz, LO is low-side injected for a 200MHz IF, PRF = -5dBm,
PLO = 0dBm, TC = +25°C, LO1 driven, LOSEL= 5V, STBY = PD1 = PD2 = GND, LOTUNE1 and LOTUNE2 set per Table 2, unless
otherwise noted.)
2175
2350
50
2700
PLO = 0dBm
60
2000
2175
PLO = -3dBm
2350
2525
75
VCC = 3.3V
65
2000
2175
VCC = 3.1V
2350
2525
RF FREQUENCY (MHz)
RF FREQUENCY (MHz)
3RF - 3LO RESPONSE
vs. RF FREQUENCY
3RF - 3LO RESPONSE
vs. RF FREQUENCY
3RF - 3LO RESPONSE
vs. RF FREQUENCY
TC = +105°C
75
65
TC = +25°C
85
PRF = -5dBm
75
65
PLO = -3dBm, 0dBm, +3dBm
85
3RF-3LO RESPONSE (dBc)
PRF = -5dBm
MAX19757 toc86
VCC = 3.5V
55
2700
PRF = -5dBm
RF FREQUENCY (MHz)
85
3RF-3LO RESPONSE (dBc)
2525
70
MAX19757 toc88
2000
3RF-3LO RESPONSE (dBc)
50
TC = -40°C
PLO = +3dBm
85
2700
PRF = -5dBm
VCC = 3.3V
MAX19757 toc89
TC = +105°C
60
PRF = -5dBm
2RF-2LO RESPONSE (dBc)
70
2RF - 2LO RESPONSE
vs. RF FREQUENCY
MAX19757 toc85
TC = +25°C
80
2RF-2LO RESPONSE (dBc)
PRF = -5dBm
MAX19757 toc87
2RF-2LO RESPONSE (dBc)
80
2RF - 2LO RESPONSE
vs. RF FREQUENCY
MAX19757 toc84
2RF - 2LO RESPONSE
vs. RF FREQUENCY
75
65
VCC = 3.1V
VCC = 3.5V
TC = -40°C
2175
2350
2525
55
2700
2000
RF FREQUENCY (MHz)
TC = -40°C
55
2700
2000
TC = +25°C
2175
2350
2525
2700
RF FREQUENCY (MHz)
PLO = -3dBm, 0dBm, +3dBm
10
9
INPUT P1dB vs. RF FREQUENCY
12
MAX19757 toc91
11
INPUT P1dB (dBm)
INPUT P1dB (dBm)
10
9
2525
INPUT P1dB vs. RF FREQUENCY
12
MAX19757 toc90
TC = +105°C
11
2350
RF FREQUENCY (MHz)
INPUT P1dB vs. RF FREQUENCY
12
2175
MAX19757 toc92
2000
VCC = 3.5V
11
INPUT P1dB (dBm)
55
10
9
VCC = 3.3V
VCC = 3.1V
8
2000
2175
2350
2525
RF FREQUENCY (MHz)
www.maximintegrated.com
2700
8
2000
2175
2350
2525
RF FREQUENCY (MHz)
2700
8
2000
2175
2350
2525
2700
RF FREQUENCY (MHz)
Maxim Integrated │ 22
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
Typical Operating Characteristics (continued)
(Typical Application Circuit, VCC = 3.3V, fRF = 2000MHz to 2700MHz, LO is low-side injected for a 200MHz IF, PRF = -5dBm,
PLO = 0dBm, TC = +25°C, LO1 driven, LOSEL= 5V, STBY = PD1 = PD2 = GND, LOTUNE1 and LOTUNE2 set per Table 2, unless
otherwise noted.)
TC = +25°C
TC = +105°C
35
2350
2525
MAX19757 toc94
MAX19757 toc95
2175
2350
2525
1975
2150
2325
-10
-20
PLO = -3dBm, 0dBm, +3dBm
-30
-40
2500
1800
2175
TC = +25°C
2350
2525
RF FREQUENCY (MHz)
www.maximintegrated.com
2700
2325
VCC = 3.1V, 3.3V, 3.5V
-30
-40
2500
1800
RF-TO-IF ISOLATION vs. RF FREQUENCY
40
30
20
PLO = -3dBm, 0dBm, +3dBm
2000
2175
2350
2525
RF FREQUENCY (MHz)
1975
2150
2325
2500
LO FREQUENCY (MHz)
MAX19757 toc100
50
RF-TO-IF ISOLATION (dB)
MAX19757 toc99
TC = +105°C
TC = -40°C
2150
-20
LO FREQUENCY (MHz)
RF-TO-IF ISOLATION vs. RF FREQUENCY
30
1975
-10
2700
MAX19757 toc98
LO LEAKAGE AT IF PORT (dBm)
RF-TO-IF ISOLATION (dB)
2000
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
TC = +105°C
2000
30
2700
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
LO FREQUENCY (MHz)
20
2525
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
-30
40
2350
35
RF FREQUENCY (MHz)
TC = +25°C
50
2175
VCC = 3.1V, 3.3V, 3.5V
40
RF FREQUENCY (MHz)
-20
1800
2000
45
RF FREQUENCY (MHz)
TC = -40°C
-40
30
2700
50
2700
50
RF-TO-IF ISOLATION vs. RF FREQUENCY
MAX19757 toc101
-10
2175
35
LO LEAKAGE AT IF PORT (dBm)
2000
PLO = -3dBm, 0dBm, +3dBm
40
RF-TO-IF ISOLATION (dB)
30
45
MAX19757 toc97
40
50
CHANNEL ISOLATION
vs. RF FREQUENCY
55
CHANNEL ISOLATION (dB)
45
CHANNEL ISOLATION
vs. RF FREQUENCY
55
CHANNEL ISOLATION (dB)
50
MAX19757 toc96
CHANNEL ISOLATION (dB)
TC = -40°C
LO LEAKAGE AT IF PORT (dBm)
55
MAX19757 toc93
CHANNEL ISOLATION
vs. RF FREQUENCY
40
30
20
VCC = 3.1V, 3.3V, 3.5V
2000
2175
2350
2525
2700
RF FREQUENCY (MHz)
Maxim Integrated │ 23
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
Typical Operating Characteristics (continued)
(Typical Application Circuit, VCC = 3.3V, fRF = 2000MHz to 2700MHz, LO is low-side injected for a 200MHz IF, PRF = -5dBm,
PLO = 0dBm, TC = +25°C, LO1 driven, LOSEL= 5V, STBY = PD1 = PD2 = GND, LOTUNE1 and LOTUNE2 set per Table 2, unless
otherwise noted.)
TC = -40°C
-40
TC = +105°C
-45
-50
1800
2400
MAX19757 toc103
-45
1800
2100
2400
-10
TC = +105°C
-20
-40
2700
TC = -40°C
-30
LO FREQUENCY (MHz)
1800
PLO = -3dBm, 0dBm, +3dBm
2400
LO FREQUENCY (MHz)
www.maximintegrated.com
2700
MAX19757 toc107
-10
2LO LEAKAGE AT RF PORT (dBm)
-20
2100
2700
2400
2LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX19757 toc106
2LO LEAKAGE AT RF PORT (dBm)
-10
2100
TC = +25°C
LO FREQUENCY (MHz)
2LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
1800
2700
2LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
-45
-40
2400
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
VCC = 3.1V, 3.3V, 3.5V
-30
2100
LO FREQUENCY (MHz)
-40
1800
PLO = -3dBm, 0dBm, +3dBm
LO FREQUENCY (MHz)
-35
-50
-40
-50
2700
MAX19757 toc104
LO LEAKAGE AT RF PORT (dBm)
-30
2100
-35
MAX19757 toc105
-35
LO LEAKAGE AT RF PORT (dBm)
TC = +25°C
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
-30
2LO LEAKAGE AT RF PORT (dBm)
LO LEAKAGE AT RF PORT (dBm)
-30
MAX19757 toc102
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
-20
VCC = 3.1V, 3.3V, 3.5V
-30
-40
1800
2100
2400
2700
LO FREQUENCY (MHz)
Maxim Integrated │ 24
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
Typical Operating Characteristics (continued)
(Typical Application Circuit, VCC = 3.3V, fRF = 2000MHz to 2700MHz, LO is low-side injected for a 200MHz IF, PRF = -5dBm,
PLO = 0dBm, TC = +25°C, LO1 driven, LOSEL= 5V, STBY = PD1 = PD2 = GND, LOTUNE1 and LOTUNE2 set per Table 2, unless
otherwise noted.)
TUNE 0,1
TUNE 1,0
20
30
TUNE 1,1
TUNE 0,0
40
2000
2175
2350
2525
0
LO = 2350MHz
5
10
15
20
25
30
2700
50
LO PORT RETURN LOSS
vs. LO FREQUENCY
5
10
15
360
SUPPLY CURRENT (mA)
MAX19757 toc110
LO PORT RETURN LOSS (dB)
0
140
230
320
410
500
IF FREQUENCY (MHz)
RF FREQUENCY (MHz)
SUPPLY CURRENT vs. LO FREQUENCY
MAX19757 toc111
10
IF PORT RETURN LOSS
vs. IF FREQUENCY
MAX19757 toc109
IF = 200MHZ
IF PORT RETURN LOSS (dB)
RF PORT RETURN LOSS (dB)
0
MAX19757 toc108
RF PORT RETURN LOSS
vs. RF FREQUENCY
TUNE 0,0
340
320
TUNE 0,1
300
TUNE 1,1
20
280
25
260
TUNE 1,0
1800
2100
2400
LO FREQUENCY (MHz)
www.maximintegrated.com
2700
1700
1950
2200
2450
2700
LO FREQUENCY (MHz)
Maxim Integrated │ 25
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
LO1
GND
VCC
PD1
LOSEL
PD2
STBY
LO2
TOP VIEW
GND
Pin Configuration
27 26 25 24 23 22 21 20 19
LO_TUNE2 28
18 LO_TUNE1
LO_VADJ 29
17 IF_DET_CEXT
VCC 30
16 VCC
GND2 31
15 GND1
MAX19757
IFM- 32
14 IFD-
IFM+ 33
13 IFD+
GND 34
12 GND
IF_RADJ 35
11 IF_DET_OUT
EP*
1
2
3
4
5
6
7
8
9
GND
VCC
GND
N.C.
GND
RFD_RTN
RFDIV
10
RFMAIN
+
RFM_RTN
VCC 36
VCC
TQFN
(6mm x 6mm)
*EXPOSED PAD. INTERNALLY CONNECTED TO GND.
www.maximintegrated.com
Maxim Integrated │ 26
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
Pin Description
PIN
NAME
1
RFMAIN
FUNCTION
Main Channel RF Input. Internally matched to 50Ω. Requires an input DC-blocking capacitor.
2
RFM_RTN
3, 5, 7, 12,
20, 26, 34
GND
Ground
4, 10, 16,
21, 30, 36
VCC
Power-Supply Input. Connect bypass capacitors as close to the pin as possible.
6
N.C.
No Connection. This pin has no internal connection and can be left open or connected to ground.
8
RFD_RTN
9
RFDIV
11
IF_DET_OUT
13, 14
IFD+, IFD-
15, 31
GND1, GND2
17
Main Channel RF return. Bypass to GND with capacitor close to the pin.
Diversity Channel RF Return. Bypass to GND with capacitor close to the pin.
Diversity Channel RF Input. Internally matched to 50Ω; requires an input DC-blocking capacitor.
If auto-leveling loop is not used leave this pin unconnected.
If auto-leveling is desired connect resistor R2 and R3 to IF_DET_OUT and add a capacitor Cext (Pin
17) to ground (see the Optional Dynamic Bias Typical Application Circuit).
Diversity Mixer Differential IF Output. Connect pullup inductors from each of these pins to VCC.
Connect these pins to a via to ground.
If auto-leveling loop is not used leave this pin unconnected.
IF_DET_CEXT If auto leveling is used connect a capacitor to ground (see the Optional Dynamic Bias Typical
Application Circuit). This capacitor sets the detector decay rate.
18, 28
LO_TUNE1,
LO_TUNE2
19
LO1
Local Oscillator 1 Input. This input is internally matched to 50Ω. Requires an input DC-blocking
capacitor.
22, 24
PD1, PD2
Power-Down Control Pin Logic. See Table 1 for desired setting. Internal 50kΩ pulldown resistor.
23
LOSEL
Local Oscillator Select Input. Set LOSEL high to select LO1. Set LOSEL low to select LO2. Internal
50kΩ pulldown resistor.
25
STBY
Standby (Active-High). All Off except Bias and selected LO port. Internal 50kΩ pulldown resistor.
27
LO2
2-Bit LO Tank Tuning. See Table 2 for desired setting internal 50kΩ pulldown resistor.
Local Oscillator 2 Input. This input is internally matched to 50Ω. Requires an input DC-blocking
capacitor.
29
LO_VADJ
LO Drive Amplitude Bias Control. Internally biased to VREF. Connect a resistor to VCC.
32, 33
IFM-, IFM+
Main Mixer Differential IF Output. Connect pullup inductors from each of these pins to VCC.
35
IF _RADJ
IF Amplifier Bias Control Mode. Connect a resistor from this pin to ground to set the bias current for
the IF amplifiers.
—
EP
www.maximintegrated.com
Exposed Pad. Internally connected to GND. Solder this exposed pad to a PCB pad that uses
multiple ground vias to provide heat transfer out of the device into the PCB ground planes. These
multiple via grounds are also required to achieve the noted RF performance (see the Layout
Considerations section.)
Maxim Integrated │ 27
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
Detailed Description
The MAX19757 dual-channel downconverter is designed
to provide 8.8dB gain, 25.3dBm input IP3 and 10.4dB
NF for a multitude of 1700MHz to 2700MHz basestation
receiver applications. With an optimized LO frequency
range of 1800MHz to 2600MHz, this mixer supports both
high- and low-side LO injection architectures for 1700MHz
to 2200MHz and 2000MHz to 2700MHz RF bands,
respectively. Independent path shutdown allows the user
to save DC power during low-peak usage times or in TDD
TX mode.
The device integrates baluns in the RF and LO ports,
an LO buffer, two double-balanced mixers, and a pair of
differential IF output amplifiers. The MAX19757 requires
a typical LO drive of 0dBm and a supply current typically
300mA at band center and 350mA across the RF frequency band to achieve the targeted linearity performance.
Applications Information
Independent Channel Shutdown
Control pins PD1 and PD2 can be used to independently
enable/disable the two mixer channels. Table 1 summarizes the relevant settings for enabling/disabling each
channel. Both channels can be switched on and off in unison by tying PD2 to ground and switching PD1. The PD1
and PD2 inputs have an internal 50kΩ pulldown resistor
which can be used to set a logic-low if left unconnected.
LO Port Select
As with most of Maxim’s Dual Rx mixers, the MAX19757
includes an LO select control (LOSEL) for use in systems
with multiple LO synthesizers. LOSEL controls the active
LO port selection. Setting LOSEL high (VCC) selects
LO port 1 while LOSEL low (ground) selects LO port 2.
The LOSEL input has an internal 50kΩ pulldown resistor
which can be used to set a logic-low if left unconnected.
LO Buffer Standby Mode (Synthesizer Pulling
Prevention Feature)
To minimize LO port disturbances in transceiver systems
that reuse the LO for transmit, the active front-end
circuitry of the MAX19757 LO port can be left ON while
disabling the selected Rx path(s). Toggling the STBY
pin high (VCC) will place the selected LO port driver in
a constant ON state, ensuring a buffered termination for
the external synthesizer during main and/or diversity path
shutdowns. Depending on the application, this buffered
interface may allow for the elimination of the external
buffer that is typically used between the synthesizer and
the mixers LO port. The STBY input has an internal 50kΩ
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pulldown resistor which can be used to set a logic-low if
left unconnected.
LO Tune
The MAX19757 employs a resonant LO driver scheme for
improved efficiency, as well as an internal leveling control
loop (ALC) to hold the internal LO drive level constant. To
extend the frequency range of this topology, two bits of
tuning are used to adjust the LO tank resonance. Good
efficiency is maintained over a typical ±150MHz range
around the resonant frequency. Table 2 settings should be
used to select the appropriate LO band for best efficiency
and performance. DC currents over LO Frequency at the
four tune settings can be seen in the Typical Operating
Characteristics curves. The minimum bias current corresponds to the LO tank resonant point. The internal ALC
loop maintains a constant drive amplitude over the range
shown in the curves for different settings. The various
specifications and guarantees assume that the appropriate LO band is used. The ALC loop includes a bias limit
circuit to prevent overdrive when operated at an inappropriate LO frequency. LO_TUNE1 and LO_TUNE2 can be
driven dynamically by using external control logic or can
be set to Vcc or ground by using a 0Ω resistor on the pins.
If driven from external logic, VCC must be applied to the
device so as to not overcurrent the on-chip ESD diodes
which could damage the part. The LO_TUNE1 and LO_
TUNE2 inputs have an internal 50kΩ pulldown resistor
which can be used to set a logic-low if left unconnected.
Table 1. Channel Enable/Disable States
Main
Channel
Diversity
Channel
PD1
PD2
ON
ON
0
0
OFF
OFF
1
0
ON
OFF
0
1
OFF
ON
1
1
Table 2. LO TUNE States
Desired LO Band
LO_TUNE1
LO_TUNE2
< 2000MHz
0
1
> 2000MHz to < 2200MHz
0
0
1
1
1
0
> 2200MHz to 2400MHz
> 2400MHz
Maxim Integrated │ 28
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
Bias Settings
relax the mixer’s IIP3 performance when the blockers are
not present. This relaxation of linearity implies that the
mixer’s overall current consumption can be throttled back
by a commensurate amount.
Since mixer linearity and power are affected by the
device’s operating points, flexibility was built into the
MAX19757 so that the IF and LO bias levels can be
adjusted using external resistor sets (see the Typical
Application Circuit). Customized tradeoffs can thus be
made to optimize linearity vs. overall power consumption.
The IF quiescent bias is set via the current at pin 35 (the
R1 value to ground), and the internal LO drive amplitude
by the current at pin 29.
IF Amplifier Bias Adjustments
Pin 35 of the device, IF_RADJ, must have a resistor to
ground for the IF amp to function. A nominal IF bias of
80mA is obtained with a 4.87kΩ resistor used for R1. A
smaller resistance increases the IF bias. Conversely, a
larger resistance decreases the IF quiescent bias; the IF
amp bias current through L1/L2 or L4/L5 of the Typical
Application Circuit should not exceed 130mA.
LO Buffer Bias Adjustments
The internal LO target amplitude can be altered by sinking
or sourcing sink current at the LO_VADJ pin. To increase
the static LO drive, remove R3 from VCC and connect it
to ground. The value of R3 should be greater than 10KΩ
for this increased drive operation. To reduce overall power
consumption by decreasing the LO drive, connect R3
from pin 29 to VCC. The Typical Application Circuit is configured for this reduced power consumption mode.
Static Bias Operation
As outlined above, external resistor sets can be chosen
to set the bias schemes for the MAX19757’s LO and IF
amplifier circuits. Select R1 and R3 to set the IF and LO
biases per the guidance provided above. See the Typical
Application Circuit for details surrounding the suggested
configurations.
Using the static bias mode will ensure that the mixer delivers a constant level of linearity performance with a constant level of power dissipation, regardless of the signal
power present on the mixer’s RF ports.
Dynamic Bias Operation
The static biasing schemes outlined above provide a constant level of linearity for a given current draw. However,
in many base station receiver applications, it may not be
necessary to maintain exceptionally high levels of linearity
performance at all times. IIP3 linearity is critical for base
station receivers when the radio is operating in the presence of interfering blockers. Due to the intermittent nature
of these blocking signals, there exists an opportunity to
www.maximintegrated.com
The MAX19757 capitalizes on this opportunity by employing a novel dynamic biasing scheme which detects the
presence of blockers in the IF domain, and increases
the biases to the IF and LO amplifiers automatically. The
use of the feature is completely optional (see Optional
Dynamic Bias Typical Application Circuit). In this figure, a
few additional components and connections are added or
modified to enable this feature. Omitting these additional
components will force the circuit to revert back to the
static biasing scheme.
The MAX19757 includes a simple log amp detector that
senses the presence of a high-level signal on both of the
IF paths. IF_DET_OUT (pin 11) will yield a signal that
swings above or below the internal 1.2V bandgap reference and can therefore be used to source or sink current
into the IF and/or LO bias adjust pins. As the IF signal
increases, the IF_DET_OUT output decreases down to
its 0.4V limit. Conversely, as the IF signal decreases, the
IF_DET_OUT output increases to its upper limit of 1.7V.
The nominal bias crossing corresponds to an IF output
level of approximately +10dBm.
The IF_DET CEXT pin (17) is used to set the attack /
decay times of the detector. The effective resistance at
this pin is ~ 30KΩ. Select a Cext value appropriate for the
slowest system data rate.
Typical values for dynamic control of both the IF and
LO are as follows: R1 = 4.64K, R2 = 5K, R3 = 10K,
and Cext = 1µF. Under small-signal conditions, the chip
power will decrease ~25% and increase to about +30%
with an IIP3 increase of ~3dBm.
Note that the attack/decay times will be affected when
the individual paths are subjected to the shutdown states
described in Table 1. Contact the factory for details.
Layout Considerations
A properly designed PCB is an essential part of any RF/
microwave circuit. Keep RF signal lines as short as possible to reduce losses, radiation, and inductance. For best
performance, route the ground-pin traces directly to the
exposed pad underneath the package. This pad MUST
be connected to the ground plane of the board by using
multiple vias under the device to provide the best RF and
thermal conduction path. Solder the exposed pad on the
bottom of the device package to a PCB.
Power-Supply Bypassing
Maxim Integrated │ 29
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
Proper voltage-supply bypassing is essential for high frequency circuit stability. Bypass each VCC pin with capacitors placed as close as possible to the device. Place the
smallest capacitor closest to the device. See the Typical
Application Circuit and Table 3 for details.
Table 3. Typical Application Circuit
Component Values
DESIGNATION
QTY
C1, C6
2
3.0pF ±0.1pF 50V C0G CER
CAP (0402)
Murata: GRM1555C1H3R0B
C12, C14
2
5.0pF ±0.1pF 50V C0G CER
CAP (0402)
Murata: GRM1555C1H5R0B
C2, C3, C5,
C7–C11, C13,
C16–C20
14
0.01µF ±10% 25V X7R CER
CAP (0402)
Murata: GRM155R71E103K
C25
1
4.7µF ±10% 16V X7R CER CAP
(1206)
Murata: GRM31CR71C475K
L1, L2, L4, L5
4
330 nH ±5% Wire Wound IND
(0805)
Coilcraft: 0805CS-331XJLC
R1
1
4.87KΩ ±1% Resistor (0402)
Any
R3
1
154KΩ ±1% Resistor (0402)
Any
T1, T2
2
Mini Circuits TC4-1W-17
U1
1
Maxim MAX19757ETX+
www.maximintegrated.com
DESCRIPTION
Exposed Pad RF and Thermal
Considerations
The exposed pad (EP) of the device’s 36-pin thin QFN
package provides a low thermal-resistance path to the
die. It is important that the PCB on which the IC is
mounted be designed to conduct heat from this contact.
In addition, provide the EP with a low-inductance RF
ground path for the device. The EP MUST be soldered to
a ground plane on the PCB, either directly or through an
array of plated via holes. Soldering the pad to ground is
also critical for efficient heat transfer. Use a solid ground
plane wherever possible.
Maxim Integrated │ 30
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
IFM+
GND
L2
R1
VCC
IF_RADJ
C18
VCC
VCC
5V OR
3.3V
C25
4.7µF
GND
LO1
LO_TUNE1
PD1
LOSEL
LO1
GND
VCC
PD1
LOSEL
PD2
31
15
32
14
33
13
34
12
35
11
36
10
IF_DET_CEXT
DNC
C10
C9
VCC
VCC
GND1
IFDIFD+
GND
IF_DET_OUT
L4
L5
DNC
C8
VCC
VCC
VCC
1
3
2
C1
RF MAIN
INPUT
www.maximintegrated.com
16
LO_TUNE1
C11
+
C17
VCC
T2
Z = 4:1
C2
4
5
VCC
C3
6
7
8
9
C7
RFDIV
IFM-
IF DIV
OUTPUT
50Ω
19
RFD_RTN
GND2
GND
C16
20
EXPOSED PAD
MAX19757
30
N.C.
VCC
21
17
GND
VCC
22
29
VCC
LO_VADJ
23
18
GND
C20
24
28
RFM_RTN
C19
25
26
RFMAIN
LO_TUNE2
L1
GND
LO2
Z = 4:1
C12
STBY
C14
27
R3
VCC
C13
50Ω
T1
PD2
LO_TUNE2
IF MAIN
OUTPUT
STBY
LO2
Typical Application Circuit
C5
C6
RF DIV
INPUT
Maxim Integrated │ 31
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
R1
VCC
IF_RADJ
R2
C18
VCC
5V OR
3.3V
VCC
C25
4.7µF
GND
C17
LO1
LO_TUNE1
PD1
LOSEL
LO1
GND
VCC
PD1
LOSEL
14
33
13
34
12
35
11
36
10
CEXT
IF_DET_CEXT
C9
C10
VCC
VCC
GND1
IFDIFD+
GND
L5
L4
IF_DET_OUT
C8
VCC
VCC
VCC
1
3
2
C1
RF MAIN
INPUT
www.maximintegrated.com
PD2
32
+
VCC
LO_TUNE1
C11
C2
4
5
VCC
C3
6
7
8
9
C7
RFDIV
GND
L2
T2
Z = 4:1
16
RFD_RTN
IFM+
19
15
GND
IFM-
20
31
N.C.
GND2
21
EXPOSED PAD
MAX19757
30
GND
C16
22
17
VCC
VCC
23
29
GND
VCC
24
18
RFM_RTN
LO_VADJ
25
26
IF DIV
OUTPUT
50Ω
28
RFMAIN
R3
C20
L1
GND
LO2
27
LO_TUNE2
C12
STBY
C14
Z = 4:1
C19
VCC
C13
50Ω
T1
PD2
LO_TUNE2
IF MAIN
OUTPUT
STBY
LO2
Optional Dynamic Bias Typical Application Circuit
C5
C6
RF DIV
INPUT
Maxim Integrated │ 32
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
Package Information
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX19757ETX+
-40°C to +105°C
36 TQFN-EP*
MAX19757ETX+T
-40°C to +105°C
36 TQFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
T = Tape and reel.
Chip Information
For the latest package outline information and land patterns
(footprints), go to www.maximintegrated.com/packages. Note
that a “+”, “#”, or “-” in the package code indicates RoHS status
only. Package drawings may show a different suffix character, but
the drawing pertains to the package regardless of RoHS status.
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND
PATTERN NO.
36 TQFN
T3666+2
21-0141
90-0049
PROCESS: SiGe BiCMOS
www.maximintegrated.com
Maxim Integrated │ 33
MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer with
Advanced Shutdown Features
Revision History
REVISION
NUMBER
REVISION
DATE
0
12/12
DESCRIPTION
Initial release
PAGES
CHANGED
—
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
© 2012 Maxim Integrated Products, Inc. │ 34