MAXIM MAX2321

19-1535; Rev 1; 6/00
UAL
IT MAN
TION K
A
ET
U
E
L
H
A
S
EV
TA
WS DA
FOLLO
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
All devices come in a 20-pin TSSOP-EP package with
exposed paddle (EP) and are specified for the extended temperature range (-40°C to +85°C).
Features
♦ Ultra-High Linearity at Ultra-Low Current and
Noise
♦ +2.7V to +3.6V Operation
♦ Pin-Selectable Low-Gain Mode Reduces Gain by
17dB and Current by 3mA
♦ Pin-Selectable Paging Mode Reduces Current
Draw by 6mA when Transmitter Is Not in Use
♦ LO Output Buffers
♦ LO Frequency Doubler (MAX2321)
♦ LO Frequency Divider (MAX2326)
♦ 0.1µA Shutdown Current
♦ 20-Pin TSSOP-EP Package
Ordering Information
PART
TEMP. RANGE
PIN-PACKAGE
MAX2320EUP
-40°C to +85°C
20 TSSOP-EP
MAX2321EUP
MAX2322EUP
MAX2324EUP
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
20 TSSOP-EP
20 TSSOP-EP
20 TSSOP-EP
MAX2326EUP
MAX2327EUP
-40°C to +85°C
-40°C to +85°C
20 TSSOP-EP
20 TSSOP-EP
Applications
Pin Configurations
CDMA/TDMA/PDC/WCDMA/GSM Cellular Phones
Single/Dual/Triple-Mode Phones
TOP VIEW
Wireless Local Loop (WLL)
Selector Guide
PART
DESCRIPTION
MAX2320
Dual-band, dual VCO inputs, and dual IF outputs
MAX2321
MAX2320 with LO doubler
MAX2322
PCS band, single mode with optional frequency
doubler
MAX2324
MAX2326
MAX2327
Dual-band, dual VCO inputs, and separately
controlled VCO buffers
LNAOUTH 1
20 MIXINH
LNAOUTL 2
19 MIXINL
RLNA 3
18 RBIAS
LNAINH 4
20 TSSOP-EP
6mm x 6.3mm
LNAINL 5
BAND 6
17 CDMA+
MAX2320
MAX2321
MAX2326
LIN 7
16 CDMA15 BUFFEN
14 VCC
GAIN 8
13 FMOUT
Cellular band, dual IF outputs
LOLIN 9
12 LOLOUT
MAX2320 with LO divider
LOHIN 10
11 LOHOUT
Typical Application Circuits appear at end of data sheet.
TSSOP
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products
1
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
MAX2320/21/22/24/26/27
General Description
The MAX2320/MAX2321/MAX2322/MAX2324/MAX2326/
MAX2327 high-performance silicon germanium (SiGe)
receiver front-end ICs set a new industry standard for
low noise and high linearity at a low supply current. This
family integrates a variety of unique features such as an
LO frequency doubler and divider, dual low-noise
amplifier (LNA) gain settings, and a low-current paging
mode that extends the handset standby time.
The MAX2320 family includes six ICs: four operate at
both cellular and PCS frequencies, one operates at cellular frequencies, and one at PCS frequencies (see
Selector Guide). Each part includes an LNA with a high
input third-order intercept point (IIP3) to minimize intermodulation and cross-modulation in the presence of
large interfering signals. In low-gain mode, the LNA is
bypassed to provide higher cascaded IIP3 at a lower
current. For paging, a low-current, high-gain mode is
provided.
The CDMA mixers in cellular and PCS bands have high
linearity, low noise, and differential IF outputs. The FM
mixer is designed for lower current and a single-ended
output.
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
ABSOLUTE MAXIMUM RATINGS
VCC to GND ...........................................................-0.3V to +4.3V
Digital Input Voltage to GND ......................-0.3V to (VCC + 0.3V)
RF Input Signals ...........................................................1.0V peak
Continuous Power Dissipation (TA = +70°C)
20-Pin TSSOP-EP (derate 80mW/°C above +70°C)........6.4W
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
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.
DC ELECTRICAL CHARACTERISTICS—MAX2320/MAX2321/MAX2326
(VCC = +2.7V to +3.6V, RRBIAS = RRLNA = 20kΩ, no RF signals applied, BUFFEN = low, LO buffer outputs connected to VCC through
50Ω resistors, all other RF and IF outputs connected to VCC, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC =
+2.75V and TA = +25°C, unless otherwise noted.)
PARAMETER
Supply Voltage
SYMBOL
CONDITIONS
ICC
High-gain,
low-linearity
paging modes
Low-gain,
high-linearity
modes
PCS band
Cellular band
PCS band
Cellular band
PCS band
Shutdown Supply Current
ILOBUF
ISHDN
UNITS
+3.6
V
20
25.3
MAX2321
24
30.8
MAX2320/1
20
25.3
MAX2326
21
25.5
19.5
MAX2320/6
15
MAX2321
19
25
MAX2320/1
15
19.5
MAX2326
15.5
20
MAX2320/6
17
21.5
MAX2321
21
26
17
21.5
17.5
21.5
14
18.5
Cellular band
MAX2320/1
5
7.5
Cellular band
MAX2326
5.5
8.5
PCS band
MAX2320/1/6
5
7.5
0.1
20
Cellular band
Additional current for
BUFFEN = high
MAX
MAX2320/6
MAX2320/1
MAX2326
FM mode
LO Buffer Supply Current
TYP
+2.7
High-gain,
high-linearity
modes
Operating Supply Current
(Note 1)
MIN
VCC
(Note 1)
mA
µA
Digital Input Logic High
VIH
Digital Input Logic Low
VIL
0.6
V
Digital Input Current High
IIH
5
µA
Digital Input Current Low
IIL
2
2.0
mA
-35
_______________________________________________________________________________________
V
µA
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
(VCC = +2.7V to +3.6V, RRBIAS = RRLNA = 20kΩ, no RF signals applied, BUFFEN = low, LO buffer outputs connected to VCC through
50Ω resistors, all other RF and IF outputs connected to VCC, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC =
+2.75V and TA = +25°C, unless otherwise noted.)
PARAMETER
Supply Voltage
SYMBOL
CONDITIONS
MIN
VCC
Operating Supply Current
(Note 1)
ICC
TYP
+2.7
High-gain,
high-linearity
modes
PCS band
(MAX2322)
High-gain,
low-linearity
paging modes
PCS band
(MAX2322)
Low-gain,
high-linearity
modes
PCS band
(MAX2322)
MAX
UNITS
+3.6
V
LOX2 = low
20
25.3
LOX2 = high
24
30.8
20
25.3
LOX2 = low
15
19.5
LOX2 = high
19
25
15
19.5
LOX2 = low
17
21.5
LOX2 = high
21
26
17
21.5
14.5
18.5
5
7.5
mA
0.1
20
µA
Cellular band (MAX2324)
Cellular band (MAX2324)
Cellular band (MAX2324)
FM mode (MAX2324 only)
LO Buffer Supply Current
ILOBUF
Additional current for BUFFEN = high
Shutdown Supply Current
ISHDN
(Note 1)
2.0
mA
Digital Input Logic High
VIH
V
Digital Input Logic Low
VIL
0.6
V
Digital Input Current High
IIH
5
µA
Digital Input Current Low
IIL
Digital Output Logic High
VOH
MAX2324 only
Digital Output Logic Low
VOL
MAX2324 only
Digital Output Current High
IOH
MAX2324 only
Digital Output Current Low
IOL
MAX2324 only, VMODEOUT = 2.4V
-35
µA
1.7
V
0.4
30
V
µA
-100
µA
DC ELECTRICAL CHARACTERISTICS—MAX2327
(VCC = +2.7V to +3.6V, RRBIAS = RRLNA = 20kΩ, no RF signals applied, BUFFEN = low, LO buffer outputs connected to VCC through
50Ω resistors, all other RF and IF outputs connected to VCC, TA = -40°C to +85°C, unless otherwise noted. Typical values are at
VCC = +2.75V and TA = +25°C, unless otherwise noted.)
PARAMETER
Supply Voltage
SYMBOL
CONDITIONS
VCC
MIN
TYP
+2.7
High-gain mode
MAX
UNITS
+3.6
V
PCS band
15
19.5
Cellular band
15
19.5
14.5
18.5
5
7.5
mA
0.1
20
µA
Operating Supply Current
(Note 1)
ICC
LO Buffer Supply Current
ILOBUF
Additional current for BUFFEN = high
Shutdown Supply Current
ISHDN
(Note 1)
FM mode
2.0
mA
Digital Input Logic High
VIH
Digital Input Logic Low
VIL
0.6
V
Digital Input Current High
IIH
5
µA
Digital Input Current Low
IIL
-35
V
µA
_______________________________________________________________________________________
3
MAX2320/21/22/24/26/27
DC ELECTRICAL CHARACTERISTICS—MAX2322/MAX2324
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
AC ELECTRICAL CHARACTERISTICS—MAX2320/MAX2321/MAX2326
(MAX232_ EV kit, VCC = +2.75V, fLNAINH = fMIXINH = 1960MHz, fLNAINL = fMIXINL = 881MHz, fLOLIN = 1091MHz (digital mode), fLOLIN =
991MHz (FM mode), fLOHIN = 1750MHz (MAX2320, MAX2322 with LOX2 = low, MAX2326 with BAND = low, MAX2327), fLLOHIN =
1085MHz (MAX2321 with BAND = low, MAX2322 with LOX2 = high), fLOHIN = 1091MHz (MAX2321 with BAND = high), fLOHIN =
2182MHz (MAX2326 with BAND = high), LO input power = -7dBm (MAX2320/MAX2326), 50Ω system, TA = +25°C, unless otherwise
noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
-3σ
TYP
+3σ
MAX
UNITS
Low-Band RF
Frequency Range
(Note 3)
800
1000
MHz
High-Band RF
Frequency Range
(Note 3)
1800
2500
MHz
Low-Band LO
Frequency Range
(Note 3)
700
1150
MHz
High-Band LO
Frequency Range
(Note 3)
1600
2300
MHz
50
400
MHz
IF Frequency Range
(Note 3)
LNA PERFORMANCE
HIGH-GAIN, HIGH-LINEARITY MODES (Note 1)
TA = +25°C
Gain (Note 4)
G
TA = -40°C to
+85°C
Gain Variation Over
Temperature
Relative to +25°C
TA = -40°C to
+85°C
13
14.5
16
Cellular
14
15
16
PCS
Cellular
11.5
14.5
17
13
15
16.5
PCS
±0.5
Cellular
±0.5
1.8
2
2.1
Cellular
1.3
1.4
1.5
NF
Input Third-Order
Intercept (Notes 5, 6)
IIP3
TA = TMIN to TMAX
POUT
1dB
TA = TMIN to TMAX
dB
dB
PCS
Noise Figure
(Note 5)
Input 1dB Compression
PCS
PCS
7
+8
Cellular
6
+8
PCS
-11
-10
Cellular
-11
-10
dB
dBm
dBm
HIGH-GAIN, LOW-LINEARITY PAGING MODES AND FM MODE (Note 1)
Gain (Note 4)
Gain Variation Over
Temperature
Relative to +25°C
Noise Figure
(Note 5)
4
G
PCS
13.5
Cellular
14.5
TA = -40°C
to +85°C
PCS
±0.5
Cellular
±0.5
dB
dB
PCS
1.9
2.1
2.2
Cellular
1.4
1.5
1.6
_______________________________________________________________________________________
dB
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
(MAX232_ EV kit, VCC = +2.75V, fLNAINH = fMIXINH = 1960MHz, fLNAINL = fMIXINL = 881MHz, fLOLIN = 1091MHz (digital mode), fLOLIN =
991MHz (FM mode), fLOHIN = 1750MHz (MAX2320, MAX2322 with LOX2 = low, MAX2326 with BAND = low, MAX2327), fLLOHIN =
1085MHz (MAX2321 with BAND = low, MAX2322 with LOX2 = high), fLOHIN = 1091MHz (MAX2321 with BAND = high), fLOHIN =
2182MHz (MAX2326 with BAND = high), LO input power = -7dBm (MAX2320/MAX2326), 50Ω system, TA = +25°C, unless otherwise
noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
-3σ
PCS
Input Third-Order
Intercept (Notes 5, 6)
TYP
+3σ
MAX
+6.5
Cellular
UNITS
dBm
+6
LOW-GAIN, HIGH-LINEARITY MODES (Note 1)
Gain (Note 4)
G
Gain Variation Over
Temperature
Relative to +25°C
PCS
-2
Cellular
TA = -40°C to
+85°C
Noise Figure (Note 5)
NF
Input Third-Order
Intercept (Notes 5, 6)
IIP3
dB
-1.5
PCS
0.5
Cellular
0.5
dB
PCS
5
5.5
6
Cellular
4
4.25
4.5
PCS
+10.5
+11.5
+12.5
Cellular
+11.5
+12.5
+13.5
dB
dBm
MIXER PERFORMANCE
HIGH-GAIN, HIGH-LINEARITY, AND LOW-GAIN MODES (Note 1)
TA = +25°C, PCS
Gain (Note 4)
G
TA = -40°C to
+85°C, PCS
Without doubler
11
11.8
12.5
13.2
14
10.5
11.1
12
12.9
13.5
Without doubler
10
10.8
12.5
14.3
15.3
With doubler
9.6
10.4
12
13.1
14.3
12
127
13.4
14.0
14.7
11.3
11.9
13.4
15.5
16.5
With doubler
TA = +25°C, cellular
TA = -40°C to +85°C, cellular
Gain Variation Over
Temperature Relative to
+25°C (Note 5)
TA = -40°C to
+85°C
PCS
Noise Figure
NF
Cellular
Input Third-Order
Intercept (Notes 5, 6)
Input dB Compression
IIP3
PCS,
TA = TMIN to TMAX
PCS
±1
Cellular
±1
Without doubler
7.5
7.8
8
11
12.3
13.5
Without divider
7.5
8.1
8.5
7.8
8.4
8.8
Without doubler
1.8
2.4
+4
With doubler
1.4
2.8
+4.7
1
1.8
3.2
Cellular,
TA = TMIN to TMAX
PCS
Cellular
dB
With doubler
With divider
TA = TMIN to TMAX
-11
-10
-12
-10.7
dB
dB
dBm
dBm
_______________________________________________________________________________________
5
MAX2320/21/22/24/26/27
AC ELECTRICAL CHARACTERISTICS (continued)
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX232_ EV kit, VCC = +2.75V, fLNAINH = fMIXINH = 1960MHz, fLNAINL = fMIXINL = 881MHz, fLOLIN = 1091MHz (digital mode), fLOLIN =
991MHz (FM mode), fLOHIN = 1750MHz (MAX2320, MAX2322 with LOX2 = low, MAX2326 with BAND = low, MAX2327), fLLOHIN =
1085MHz (MAX2321 with BAND = low, MAX2322 with LOX2 = high), fLOHIN = 1091MHz (MAX2321 with BAND = high), fLOHIN =
2182MHz (MAX2326 with BAND = high), LO input power = -7dBm (MAX2320/MAX2326), 50Ω system, TA = +25°C, unless otherwise
noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
-3σ
TYP
+3σ
MAX
UNITS
HIGH-GAIN, LOW-LINEARITY, AND LOW-GAIN MODES (Note 1)
PCS
Gain (Note 4)
G
Without doubler
10.6
11.3
12
12.1
12.8
With doubler
10.2
10.8
11.5
12.4
13.1
11.2
12.1
13
13.8
14.7
Cellular Band
Gain Variation Over
Temperature Relative
to +25°C
TA = -40°C to
+85°C
PCS
Noise Figure
NF
Cellular
Input Third-Order
Intercept
PCS
IIP3
PCS
±1
±1
Cellular
±1
±1
Without doubler
7.2
7.5
7.6
With doubler
(Note 7)
10.5
12
13.4
7
7.2
7.6
7.5
7.7
8.1
dB
dB
Without divider
With divider
Without doubler
dB
+1
With doubler
+2.2
Cellular
dBm
+1.0
FM MODE (Note 1)
Gain (Note 4)
G
Noise Figure
NF
Input Third-Order
Intercept (Notes 5, 6)
IIP3
TA = +25°C
9.7
10.4
11.2
11.9
12.7
TA = -40°C to +85°C
7.8
9.0
11.2
14.0
15.4
10.6
11.1
11.5
TA = -40°C to +85°C
2.3
3.2
4.9
dB
dB
dBm
LO BUFFER PERFORMANCE (BUFFEN = HIGH)
LO Output Level
Load = 100Ω pullup resistor
-12
BUFFEN = GND
-44
LO_OUT Even Harmonic
Distortion
LO Emissions at LNA
Input Port
Interstage filter rejection = 20dB
dBm
-31
dBc
-50
dBm
Note 1: See Tables 1–5 for operational mode selection.
Note 2: A total of 36 devices from 3 different wafer lots are used to determine the standard deviation. The lots were selected to represent worst-case process conditions.
Note 3: Operation is characterized for the frequencies specified in the conditions; for other frequencies in the band, see Tables 8–12
for LNA and mixer S parameters.
Note 4: Guaranteed by design, characterization, and production functional test.
Note 5: Guaranteed by design and characterization.
Note 6: For cellular band, RF inputs are -25dBm each tone at 881MHz and 882MHz, fLO = 1091MHz. For PCS band, RF inputs are
-25dBm each tone at 1960MHz and 1961MHz, fLO = 2170MHz. For IIP3 vs. ICC trade-off, see Typical Operating
Characteristics.
6
_______________________________________________________________________________________
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
MAX2320/21/22/24/26/27
Typical Operating Characteristics
(MAX232_ EV kit, VCC = +2.75V, fLNAINH = fMIXINH = 1960MHz, fLNAINL = fMIXINL = 881MHz, fLOHIN = 1750MHz, fLOLIN = 1091MHz
(digital modes), fLOLIN = 991MHz (FM mode), LO input power = -7dBm, 50Ω system, all measurements include matching component
losses but not connector and trace losses, TA = +25°C, unless otherwise noted.)
CELLULAR-BAND SUPPLY CURRENT
vs. TEMPERATURE
HGLL
10
MAX2320 toc02
CELLULAR-BAND LNA S11
LGHL
15
HGLL
10
5
5
0
0
HGHL
HGLL, FM
LGHL
50
100
-50
0
50
CELLULAR-BAND LNA S22
PCS-BAND LNA S11
LGHL
100
PCS-BAND LNA S22
MAX2320 toc05
TEMPERATURE (°C)
MAX2320 toc06
0
TEMPERATURE (°C)
MAX2320 toc04
HGLL
HGHL
HGHL
HGHL
HGLL
HGLL, FM
LGHL
LGHL
DIGITAL MIXER DIFFERENTIAL IF
PORT IMPEDANCE
CELLULAR-BAND MIXER S11
ALL MODES
ALL MODES
MAX2320 toc09
160
0.80
CAPACITANCE
120
100
0.70
0.60
80
60
RESISTANCE
40
0.50
0.40
20
0
0
0.30
50 100 150 200 250 300 350 400 450
FREQUENCY (MHz)
_______________________________________________________________________________________
7
PARALLEL CAPACITANCE (pF)
140
PARALLEL RESISTANCE (kΩ)
PCS-BAND MIXER S11
MAX2320 toc08
-50
MAX2320 toc07
SUPPLY CURRENT (mA)
LGHL
15
HGHL
20
SUPPLY CURRENT (mA)
HGHL
20
25
MAX2320 toc01
25
MAX2320 toc03
PCS-BAND SUPPLY CURRENT
vs. TEMPERATURE
Typical Operating Characteristics (continued)
(MAX232_ EV kit, VCC = +2.75V, fLNAINH = fMIXINH = 1960MHz, fLNAINL = fMIXINL = 881MHz, fLOHIN = 1750MHz, fLOLIN = 1091MHz
(digital modes), fLOLIN = 991MHz (FM mode), LO input power = -7dBm, 50Ω system, all measurements include matching component
losses but not connector and trace losses, TA = +25°C, unless otherwise noted.)
CELLULAR-BAND HGHL LNA GAIN
vs. CURRENT
17
50
0.7
40
RESISTANCE
30
20
0.6
0.5
50 100 150 200 250 300 350 400 450
14
TA = +25°C
TA = +85°C
13
11
11
10
10
4
8
10
12
14
PCS-BAND HGHL LNA GAIN
vs. CURRENT
CELLULAR-BAND LNA GAIN
vs. FREQUENCY
MAX2320 toc13
14
VCC = +2.7V TO +3.6V
HGHL
12
13
HGHL, FM
8
6
LGHL
0
20
5
LGHL
-3
850
870
890
910
1900
1950
2000
LNA CURRENT (mA)
FREQUENCY (MHz)
FREQUENCY (MHz)
CELLULAR-BAND HGHL LNA
MAXIMUM AVAILABLE GAIN
PCS-BAND HGHL LNA
MAXIMUM AVAILABLE GAIN
CELLULAR-BAND HGHL LNA IIP3
vs. CURRENT
15
14
13
12
11
17
TA = +85°C
9
8
7
16
IIP3 (dBm)
16
10
MAX2320 TOC17
17
18
MAXIMUM AVAILABLE GAIN (dB)
MAX2320 TOC16
18
15
14
TA = -40°C
TA = +25°C
6
5
4
3
2
13
1
12
10
700
750
800
850
900
FREQUENCY (MHz)
8
7
-1
-2
15
9
1
11
10
HGLL, FM
3
2
5
HGHL
15
4
10
14
PCS-BAND LNA GAIN vs. FREQUENCY
GAIN (dB)
13
9
11
10
GAIN (dB)
14
4
16
LNA CURRENT (mA)
16
12
GAIN (dB)
6
LNA CURRENT (mA)
15
TA = +25°C
TA = +85°C
13
12
FREQUENCY (MHz)
16
14
12
MAX2320toc14
0
15
15
10
0
TA = -40°C
16
MAX2320toc15
0.8
60
17
GAIN (dB)
0.9
70
16
GAIN (dB)
80
TA = -40°C
MAX2320toc18
1.0
CAPACITANCE
PARALLEL CAPACITANCE (pF)
PARALLEL RESISTANCE (kΩ)
90
MAX2320toc11
MAX2320 toc10
100
PCS-BAND HGHL LNA GAIN
vs. CURRENT
MAX2320toc12
FM MIXER IF
PORT IMPEDANCE
MAXIMUM AVAILABLE GAIN (dB)
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
950
1000
1700 1800 1900 2000 2100 2200 2300 2400 2500
FREQUENCY (MHz)
0
0
5
10
LNA CURRENT (mA)
_______________________________________________________________________________________
15
20
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
PCS-BAND HGHL LNA IIP3
vs. CURRENT
VCC = 3.6V
10
VCC = 2.7V
4
2
4
TA = +25°C
2
6
4
0
2
-2
0
-4
-2
VCC = 3V
VCC = 2.7V
0
-2
-6
-4
6
8
10
12
14
16
-4
4
18
6
8
10
12
14
16
18
4
8
10
12
14
16
LNA CURRENT (mA)
LNA CURRENT (mA)
PCS-BAND HGHL LNA IIP3
vs. CURRENT
CELLULAR-BAND HGHL LNA
NOISE FIGURE vs. FREQUENCY
CELLULAR-BAND HGLL LNA
NOISE FIGURE vs. FREQUENCY
12
11.2mA
1.7
9mA
1.6
NOISE FIGURE (dB)
10
HGHL
8
HGLL
6
4
1.5
7mA
1.4
1.3
1.45
1.40
NOISE FIGURE (dB)
LGHL
5.6mA
1.0
-40
-30
-20
1.25
1.10
850
-10
1.30
1.15
1.1
0
1.35
1.20
1.2
2
860
870
880
890
900
910
850
860
870
880
890
900
FREQUENCY (MHz)
FREQUENCY (MHz)
PCS-BAND HGHL NOISE FIGURE
vs. FREQUENCY
PCS-BAND HGLL LNA NOISE FIGURE
vs. FREQUENCY
CELLULAR-BAND HGHL MIXER
CONVERSION GAIN vs. CURRENT
5.6mA
1.6
1.5
1.4
1940
1960
1980
FREQUENCY (MHz)
1.85
2000
2020
1.80
1.75
1.70
1.65
1.60
TA = -40°C, HIGH SIDE LO
14.5
14.0
CONVERSION GAIN (dB)
1.7
1.90
NOISE FIGURE (dB)
7mA
15.0
MAX2320toc26
1.9
1.8
1.95
MAX2320 toc25
11.2mA
910
MAX2320toc27
LNA CURRENT (mA)
2.0
18
MAX2320toc24
1.8
MAX2320 toc22
14
1920
6
LNA CURRENT (mA)
MAX2320toc23
4
IIP3 (dBm)
8
TA = -40°C
IIP3 (dBm)
IIP3 (dBm)
IIP3 (dBm)
6
VCC = 3.6V
10
6
VCC = 3V
8
NOISE FIGURE (dB)
TA = +85°C
8
12
MAX2320toc20
12
10
MAX2320toc19
14
PCS-BAND HGHL LNA IIP3
vs. CURRENT
MAX2320toc21
CELLULAR-BAND HGHL LNA IIP3
vs. CURRENT
13.5
13.0
12.5
12.0
TA = -40°C, LOW SIDE LO
TA = +25°C, HIGH SIDE LO
TA = +25°C, LOW SIDE LO
TA = +85°C, HIGH SIDE LO
TA = +85°C, LOW SIDE LO
11.5
1.55
11.0
1.50
10.5
10.0
1.45
1920
1940
1960
1980
FREQUENCY (MHz)
2000
2020
6
11
16
MIXER CURRENT (mA)
_______________________________________________________________________________________
9
MAX2320/21/22/24/26/27
Typical Operating Characteristics (continued)
(MAX232_ EV kit, VCC = +2.75V, fLNAINH = fMIXINH = 1960MHz, fLNAINL = fMIXINL = 881MHz, fLOHIN = 1750MHz, fLOLIN = 1091MHz
(digital modes), fLOLIN = 991MHz (FM mode), LO input power = -7dBm, 50Ω system, all measurements include matching component
losses but not connector and trace losses, TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics (continued)
(MAX232_ EV kit, VCC = +2.75V, fLNAINH = fMIXINH = 1960MHz, fLNAINL = fMIXINL = 881MHz, fLOHIN = 1750MHz, fLOLIN = 1091MHz
(digital modes), fLOLIN = 991MHz (FM mode), LO input power = -7dBm, 50Ω system, all measurements include matching component
losses but not connector and trace losses, TA = +25°C, unless otherwise noted.)
PCS-BAND HGHL MIXER
CONVERSION GAIN vs. CURRENT
12.5
VCC = +2.7V, LOW SIDE LO
12.0
VCC = +3.6V, LOW SIDE LO
12
11
TA = -45°C, LOW SIDE LO
10
9
TA = +25°C, HIGH SIDE LO
TA = +25°C, LOW SIDE LO
TA = +85°C, HIGH SIDE LO
TA = +85°C, LOW SIDE LO
8
11.5
7
6
11
12.0
11.5
11
16
6
11
16
MIXER CURRENT (mA)
MIXER CURRENT (mA)
CELLULAR-BAND MIXER CONVERSION
GAIN vs. LO INPUT LEVEL
PCS-BAND HGHL MIXER CONVERSION
GAIN vs. LO INPUT LEVEL
CELLULAR-BAND
HGHL MIXER CONVERSION
GAIN vs. INPUT FREQUENCY
10
HGLL, HIGH SIDE LO
9
FM, LOW SIDE LO
FM, HIGH SIDE LO
8
12.0
HGHL, HIGH SIDE LO
HGLL, LOW SIDE LO
11.0
HGLL, HIGH SIDE LO
10.5
12
10.0
-20
-15
-10
-5
0
-19
5
8
6
4
0
9.0
6
10
2
9.5
7
MAX2320 toc33
MAX2320toc32
12.5
11.5
14
CONVERSION GAIN (dB)
HGHL, HIGH SIDE LO
HGLL, LOW SIDE LO
11
HGHL, LOW SIDE LO
CONVERSION GAIN (dB)
12
13.0
MAX2320toc31
HGHL, LOW SIDE LO
13
-14
-9
-4
700
6
1
800
900
1000
LO INPUT LEVEL (dBm)
LO INPUT LEVEL (dBm)
RF INPUT FREQUENCY (MHz)
PCS-BAND HGHL MIXER CONVERSION
GAIN vs. RF INPUT FREQUENCY
CELLULAR-BAND HGHL
MIXER IIP3 vs. CURRENT
CELLULAR-BAND HGHL
MIXER IIP3 vs. CURRENT
12
TA = +85°C,
TA = +85°C, LOW SIDE LO
HIGH SIDE LO
6
6
MAX2320 toc36
8
MAX2320 toc34
14
5
4
10
IIP3 (dBm)
4
8
6
TA = +25°C,
TA = +25°C,
LOW SIDE LO
HIGH SIDE LO
TA = -40°C, LOW SIDE LO
2
0
4
2
-2
0
-4
1700
1900
2100
2300
RF INPUT FREQUENCY (MHz)
2500
TA = -40°C, HIGH SIDE LO
IIP (dBm)
CONVERSION GAIN (dB)
12.5
MIXER CURRENT (mA)
14
10
13.0
11.0
6
16
VCC = +3.6V TO +2.7V
HIGH AND LOW
SIDE LO
13.5
6
11.0
MAX2320 toc30
13
CONVERSION GAIN (dB)
VCC = +3.0V,
VCC = +2.7V, LOW SIDE LO
HIGH SIDE LO
14.0
MAX2320 toc35
CONVERSION GAIN (dB)
13.0
TA = -45°C, HIGH SIDE LO
14
CONVERSION GAIN (dB)
VCC = +3.6V, HIGH SIDE LO
VCC = +3.0V, HIGH SIDE LO
13.5
15
MAX2320 toc28
14.0
PCS-BAND HGHL MIXER
CONVERSION GAIN vs. CURRENT
MAX2320toc29
CELLULAR-BAND HGHL MIXER
CONVERSION GAIN vs. CURRENT
CONVERSION GAIN (dB)
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
3
HIGH SIDE/LOW SIDE LO
VCC = 2.7V TO 3.6V
2
1
0
-1
-2
6
11
MIXER CURRENT (mA)
16
6
11
MIXER CURRENT (mA)
______________________________________________________________________________________
16
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
CELLULAR-BAND MIXER IIP3
vs. LO INPUT LEVEL
5
LOW SIDE LO, HGHL
1
LOW SIDE LO, HGLL
-1
HIGH SIDE LO, HGLL
-2
HIGH SIDE LO, HGHL AND LGHL
3
LOW SIDE LO,
LOW SIDE LO, FM
HGHL AND LGHL
2
HIGH SIDE LO, HGHL
-3
HIGH SIDE LO, HGLL
-25
-20
-15
-14
-10
-6
-2
2
6
10
6
11
16
RF INPUT LEVEL PER TONE (dBm)
LO INPUT LEVEL (dBm)
MIXER CURRENT (mA)
PCS-BAND HGHL MIXER IIP3
vs. CURRENT
PCS-BAND MIXER IIP3
vs. RF INPUT LEVEL
PCS-BAND MIXER IIP3
vs. LO INPUT LEVEL
HIGH SIDE LO, 2.7V
LOW SIDE LO, 3V
4
IIP3 (dB)
HIGH SIDE LO, 3.6V
LOW SIDE LO, 3.6V
2
LOW SIDE LO, 2.7V
0
-2
-4
6
11
8
7
6
5
4
3
2
1
0
-1
-2
-3
-4
16
HIGH SIDE LO, HGHL, HIGH SIDE LO, LGHL
8
LOW SIDE LO, LGHL
HIGH SIDE LO, LGHL
7
HIGH SIDE LO, HGHL
6
IIP3 (dBm)
HIGH SIDE LO, 3V
6
LOW SIDE LO, HGHL
5
LOW SIDE LO, HGHL
4
3
LOW SIDE LO, LGHL
LOW SIDE LO, HGLL
2
LOW SIDE LO, HGLL
1
HIGH SIDE LO, HGLL
HIGH SIDE LO, HGLL
0
-35
-30
-25
-20
-15
-18
-10
-14
-10
-6
-2
2
6
10
MIXER CURRENT (mA)
RF INPUT LEVEL PER TONE (dBm)
LO INPUT LEVEL (dBm)
CELLULAR-BAND HGHL MIXER NOISE
FIGURE vs. LO INPUT LEVEL
CELLULAR-BAND HGLL MIXER NOISE
FIGURE vs. LO INPUT LEVEL
CELLULAR-BAND FM MIXER
NOISE FIGURE vs. LO INPUT LEVEL
LOW SIDE LO
NOISE FIGURE (dB)
10
12
8
HIGH SIDE LO
LOW SIDE LO
8
6
4
2
2
HIGH SIDE LO
-17
-12
-7
-2
LO INPUT LEVEL (dBm)
3
LO SIDE LO
10
HIGH SIDE LO
8
6
4
2
0
0
14
12
10
4
16
NOISE FIGURE (dB)
12
6
14
MAX2320 toc43
14
MAX2320 toc44
IIP3 (dBm)
TA = +25°C, LOW SIDE LO
TA = -40°C, LOW SIDE LO
-4
-18
-10
TA = +85°C, LOW SIDE LO
2
-2
LOW SIDE LO, HGLL
MAX2320 toc41
8
-30
MAX2320 toc40
-35
4
0
0
-5
TA = +25°C,
HIGH SIDE LO
TA = -40°C, HIGH SIDE LO
1
-4
NOISE FIGURE (dB)
TA = +85°C, HIGH SIDE LO
8
MAX2320toc45
0
10
6
4
IIP3 (dBm)
IIP3 (dBm)
2
HIGH SIDE LO, FM
MAX2320 toc39
3
6
MAX2320toc42
HIGH SIDE LO, LGHL
IIP3 (dBm)
LOW SIDE LO, LGHL
4
MAX2320toc37
5
PCS-BAND HGHL MIXER IIP3
vs. CURRENT
MAX2320 toc38
CELLULAR-BAND MIXER IIP3
vs. RF INPUT LEVEL
0
-17
-12
-7
-2
LO INPUT LEVEL (dBm)
3
-17
-12
-7
-2
3
LO INPUT LEVEL (dBm)
______________________________________________________________________________________
11
MAX2320/21/22/24/26/27
Typical Operating Characteristics (continued)
(MAX232_ EV kit, VCC = +2.75V, fLNAINH = fMIXINH = 1960MHz, fLNAINL = fMIXINL = 881MHz, fLOHIN = 1750MHz, fLOLIN = 1091MHz
(digital modes), fLOLIN = 991MHz (FM mode), LO input power = -7dBm, 50Ω system, all measurements include matching component
losses but not connector and trace losses, TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics (continued)
(MAX232_ EV kit, VCC = +2.75V, fLNAINH = fMIXINH = 1960MHz, fLNAINL = fMIXINL = 881MHz, fLOHIN = 1750MHz, fLOLIN = 1091MHz
(digital modes), fLOLIN = 991MHz (FM mode), LO input power = -7dBm, 50Ω system, all measurements include matching component
losses but not connector and trace losses, TA = +25°C, unless otherwise noted.)
PCS-BAND HGLL MIXER NOISE
FIGURE vs. LO INPUT LEVEL
10
NOISE FIGURE (dB)
HIGH SIDE LO
8
6
12
LOW SIDE LO
10
HIGH SIDE LO
8
6
LOW SIDE LO
4
4
-5
OUTPUT LEVEL (dBm)
12
0
MAX2320 toc47
14
MAX2320 toc46
14
CELLULAR-BAND LO BUFFER
OUTPUT LEVEL vs. INPUT LEVEL
MAX2320 toc48
PCS-BAND HGHL MIXER NOISE
FIGURE vs. LO INPUT LEVEL
NOISE FIGURE (dB)
-10
-15
TA = -45°C TO +85°C HIGH SIDE
AND LOW SIDE LO
-20
2
2
0
0
-17
-12
-7
-2
-25
-17
3
-12
-7
-2
CELLULAR-BAND 2ND AND 3RD
HARMONICS vs. LO INPUT POWER
0
-5
3RD HARMONIC
OUTPUT LEVEL (dBm)
-20
-30
-40
-10
2ND HARMONIC
-50
-10
-15
TA = -45°C TO +85°C
HIGH SIDE AND LOW
SIDE LO
-20
-60
-70
-25
-20
0
10
0
10
PCS-BAND 2ND AND 3RD HARMONICS
LO BUFFER OUTPUT vs. INPUT LEVEL
PCS-BAND MIXER
2 x 2 SPURIOUS REJECTION
-20
2ND HARMONIC
-40
-50
3RD HARMONIC
MAX2320toc52
-55
-57
2 x 2 SPURIOUS OUTPUT (dBc)
fLO = 1750MHz
-60
-59
-61
HGLL, WITHOUT LO DOUBLER
-63
-65
-67
HGHL, WITHOUT LO DOUBLER
-69
-71
-73
-70
-75
-20
-10
0
LO INPUT LEVEL (dB)
12
-10
LO INPUT LEVEL (dBm)
-10
-30
-20
LO INPUT LEVEL (dB)
MAX2320 toc51
0
-10
10
80
0
LO INPUT LEVEL (dBm)
MAX2320 toc50
fLO = 1091MHz
-10
HARMONIC POWER (dBm)
-20
PCS-BAND LO BUFFER
OUTPUT LEVEL vs. INPUT LEVEL
MAX2320 toc49
0
3
LO INPUT LEVEL (dBm)
LO INPUT LEVEL (dBm)
HARMONIC POWER (dBm)
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
90
100
110
120
IF OUTPUT FREQUENCY (MHz)
______________________________________________________________________________________
10
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
PIN
MAX2320
MAX2321
MAX2326
MAX2322
MAX2324
MAX2327
1
1
—
1
LNAOUTH
High-Band LNA Output. Connect a pull-up inductor to
VCC and an external series capacitor as part of the
matching network.
2
—
2
2
LNAOUTL
Low-Band LNA Output. Connect a pull-up inductor to
VCC and an external series capacitor as part of the
matching network.
NAME
FUNCTION
3
3
3
—
RLNA
LNA Bias-Setting Resistor Connection. For nominal bias,
connect a 20kΩ resistor to ground. The resistor value
controls the LNA’s linearity in high-gain, high-linearity
modes.
4
4
—
4
LNAINH
High-Band RF Input. Requires a blocking capacitor and
a matching network. The capacitor may be used as part
of the matching network.
—
—
4
—
MODEOUT
Logic Output. Indicates mode of operation. VMODEOUT =
high in FM mode.
5
—
5
5
LNAINL
Low-Band RF Input. Requires a blocking capacitor and a
matching network. The capacitor may be used as part of
the matching network.
—
6
6
7
SHDN
Shutdown Logic Input. See Detailed Description for control modes.
6
—
—
6
BAND
Band-Select Logic Input. See Detailed Description for
control modes.
7
7
7
—
LIN
8
8
8
—
GAIN
Gain-Select Logic Input. See Detailed Description for
control modes.
—
—
—
8
MODE
Cellular-Band Mode Select Logic Input. See Detailed
Description for control modes.
9
—
9
9
LOLIN
Low-Frequency LO Input. Used in FM mode on all parts
and in cellular digital mode for MAX2320/MAX2324.
LOHIN
High-Frequency LO Input. For MAX2321, used in cellular
digital mode and in PCS mode with the doubler active.
For MAX2320/MAX2327, used in PCS mode without the
doubler. For MAX2322, used with or without the doubler.
For MAX2326, used in PCS mode and cellular digital
mode with the divide-by-two.
10
10
—
10
Linearity-Select Logic Input. See Detailed Description for
control modes.
______________________________________________________________________________________
13
MAX2320/21/22/24/26/27
Pin Description
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
MAX2320/21/22/24/26/27
Pin Description (continued)
PIN
MAX2320
MAX2321
MAX2326
11
11
MAX2324
—
MAX2327
11
NAME
FUNCTION
LOHOUT
High-Frequency LO Buffer Output. Open-collector output requires pull-up inductor or pull-up
resistor of 100Ω or less. Reactive match to the
load delivers maximum power.
12
—
12
12
LOLOUT
Low-Frequency LO Buffer Output. Open-collector output requires pull-up inductor or pull-up
resistor of 100Ω or less. Reactive match to the
load delivers maximum power.
13
—
13
13
FMOUT
FM Mixer Output. Requires a pull-up inductor to
VCC and a series capacitor as part of the matching network.
—
13
—
—
LOX2
14
14
14
14
VCC
Power Supply. Bypass with a 1000pF capacitor
as close to the pin as possible.
LO Doubler Logic Input. Drive LOX2 high to
enable the LO doubler.
15
15
15
15
BUFFEN
LO Output Buffer Enable. The LO buffers are
controlled separately from the rest of the IC. Drive
BUFFEN high to power up the LO output buffer
associated with the selected LO input port.
16, 17
16, 17
16, 17
—
CDMA-,
CDMA+
CDMA Mixer Differential Outputs. Require pullup inductors and series capacitors as part of the
matching network.
—
—
—
16, 17
IFOUT+,
IFOUT-
Mixer Differential Outputs. Require pull-up
inductors and series capacitors as part of the
matching network.
18
19
14
MAX2322
PIN
18
—
18
19
18
19
RBIAS
Bias-Setting Resistor Connection. For nominal
bias, connect 20kΩ resistor to ground. The resistor value controls the digital LNA’s linearity in
low-gain, digital, or FM mode, and controls the
mixers in all modes.
MIXINL
Low-Band Mixer Input. Requires a blocking
capacitor and a matching network. The capacitor may be used as part of the matching network.
20
20
—
20
MIXINH
High-Band Mixer Input. Requires a blocking
capacitor and a matching network. The capacitor may be used as part of the matching network.
—
2, 5, 9, 12,
19
1, 10, 11, 20
3
N.C.
No Connection. Do not make any connection to
these pins.
Slug
Slug
Slug
Slug
GND
Ground Reference for RF, DC, and Logic Inputs.
Solder the slug evenly to the board ground
plane.
______________________________________________________________________________________
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
Low-Noise Amplifier
Within its operating bands, each device in the
MAX2320 family (except the MAX2327) has three
modes of LNA operation: high gain, high linearity
(HGHL); high gain, low linearity (HGLL); and low gain,
high linearity (LGHL). The logic inputs control the LNA
mode as described in the AC Electrical Characteristics.
Use HGHL mode when extra-high LNA linearity is
required for cross-modulation suppression. Use HGLL
mode when the transmitter is off and cross-modulation
is not a concern. When the LNA changes modes, the
input VSWR change is minimal. Use LGHL mode for
receiving large signals and when high sensitivity is not
required. The MAX2327 LNA has only an HGLL mode.
Adjust the HGHL mode LNA linearity by changing
R RLNA , and adjust linearity of the other modes by
changing RRBIAS.
Downconverter
The downconverters in these devices are double-balanced mixers. The PCS-band mixer and digital cellularband mixer share the same IF output ports. The cellular
band FM mixer has its own IF output to feed a different
filter. Adjust the downconverter linearity and current by
changing RRBIAS (see Typical Operating Characteristics). When the linearity requirement is high, the mode
control inputs increase the current in the downconverter. When the linearity requirement is not high, the current is lower.
LO Output Buffers
The BUFFEN logic input turns the open-collector LO
output buffers on and off. This feature saves current if
the buffers are not required.
Operational Modes
Each device has logic input pins that control the different operational modes listed in Tables 1–5.
MAX2320/MAX2321/MAX2326 Operation
The MAX2320/MAX2321/MAX2326 are dual-band, triplemode receivers that amplify and downconvert cellularand PCS-band signals. They consist of cellular and PCS
LNAs; cellular digital, cellular FM, and PCS digital mixers; and cellular and PCS LO buffers. The MAX2321 has
an LO frequency doubler on-chip, so a single cellularband VCO can be used for both the cellular- and PCSband mixers. Selecting the PCS path activates the LO
frequency doubler. The MAX2326 has an LO divide-bytwo circuit, so a single PCS-band VCO can be used for
both the cellular and PCS mixers. Selecting the cellular
path activates the LO divide-by-two circuit. Three logic
input pins—BAND, GAIN, and LIN—control eight operational modes of the LNAs and mixers. The modes are
summarized in Table 1.
Table 1. MAX2320/MAX2321/MAX2326 Operational Modes
DESCRIPTION
BAND
GAIN
LIN
Shutdown. The entire part is shut down except for the LO buffer, which is controlled by BUFFEN.
L
L
L
Low-Gain, High-Linearity (LGHL) PCS Mode. The PCS LNA and mixer are in
LGHL mode.
L
L
H
High-Gain, Low-Linearity (HGLL) PCS Mode. The LNA and mixer are in HGLL
mode.
L
H
L
High-Gain, High-Linearity (HGHL) PCS Mode. The LNA and mixer are in
HGHL mode.
L
H
H
High-Gain, Low-Linearity (HGLL) Cellular FM Mode. The cellular LNA is in
HGLL mode. The FM mixer and associated LO buffer are selected.
H
L
L
Low-Gain, High-Linearity (LGHL) Cellular Digital Mode. The cellular LNA and
mixer are in LGHL mode.
H
L
H
High-Gain, Low-Linearity (HGLL) Cellular Digital Mode. The cellular LNA and
mixer are in HGLL mode.
H
H
L
High-Gain, High-Linearity (HGHL ) Cellular Digital Mode. The cellular LNA
and mixer are in HGHL mode.
H
H
H
Note: L = Logic Low; H = Logic High
______________________________________________________________________________________
15
MAX2320/21/22/24/26/27
Detailed Description
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
MAX2322 Operation
The MAX2322 is a lower-cost PCS-only version that can
be installed as a drop-in replacement for the dual-band
versions. It consists of a PCS LNA, PCS mixer, pinselectable LO frequency doubler, and LO buffer. Logic
input SHDN = V CC / GND turns on/off the entire IC
except the LO buffer. The LOX2 logic input controls the
LO frequency doubler. LOX2 = GND disables the doubler when using a PCS band VCO, and LOX2 = VCC
activates the doubler when using a cellular-band VCO.
GAIN and LIN logic inputs control the MAX2322’s three
operational modes, as summarized in Table 2.
MAX2324 Operation
The MAX2324 is a lower-cost cellular-only version that
can be installed as a drop-in replacement for the dualband versions. It consists of a cellular LNA, cellular digital mixer, cellular FM mixer, and LO buffer. A SHDN
logic input turns on/off the entire IC except the LO
buffer. GAIN and LIN logic inputs control the
MAX2324’s three operational modes, as summarized in
Table 3.
MAX2327 Operation
The MAX2327 is similar to the MAX2320 except it only
features an HGLL mode, and either LO output buffer is
selectable during shutdown. It consists of PCS and cellular LNAs; PCS, cellular digital, and cellular FM mixers;
and PCS and cellular LO buffers. A SHDN logic input
turns on/off the entire IC except the LO buffer. BAND
and MODE logic inputs control the MAX2327’s three
operational modes, as summarized in Table 4.
Applications Information
Cascaded LNA/Mixer Performance
The LNA and mixer design aims at optimizing cascaded performance in all gain and linearity modes. In highgain, high-linearity mode, both the LNA and mixer have
a low noise figure, high gain, and high linearity. The
LNA has high gain to minimize the noise contribution of
the mixer, thus increasing the receiver’s sensitivity and
extra-high linearity for superior cross-modulation suppression. The HGLL mode is used when the transmitter
is off and cross-modulation is not a concern. In lowgain, high-linearity mode, the received signal is strong
enough that linearity is the primary concern. The LNA
gain is reduced for higher system linearity. Tables 5
and 6 summarize the cascaded performance.
S Parameters
The S parameters are listed in Tables 7–11. An electronic copy is also available at www.maxim-ic.com
/MAX2320/S_table/.
16
Table 2. MAX2322 Operational Modes
GAIN
LIN
Not used.
OPERATIONAL MODE
L
L
Low-Gain, High-Linearity (LGHL) PCS
Mode. The LNA and mixer are in LGHL
mode.
L
H
High-Gain, Low-Linearity (HGLL) PCS
Mode. The LNA and mixer are in HGLL
mode.
H
L
High-Gain, High-Linearity (HGHL) PCS
Mode. The LNA and mixer are in HGHL
mode.
H
H
Note: L = Logic Low; H = Logic High
Table 3. MAX2324 Operational Modes
OPERATIONAL MODE
GAIN
LIN
FM Mode. The LNA is in HGLL mode.
The FM mixer and the associated LO
buffer are selected.
L
L
Low-Gain, High-Linearity (LGHL)
Cellular Mode. The LNA and digital
mixer are in LGHL mode.
L
H
High-Gain, Low-Linearity (HGLL )
Cellular Mode. The LNA and digital
mixer are in HGLL mode.
H
L
High-Gain, High-Linearity (HGHL )
Cellular Mode. The LNA and digital
mixer are in HGHL mode.
H
H
Note: L = Logic Low; H = Logic High
Table 4. MAX2327 Operational Modes
BAND
MODE
Not used.
L
L
Digital PCS Mode. The LNA and mixer
are in HGLL mode.
L
H
FM Mode. The cellular FM mixer is
selected.
H
L
Digital Cellular Mode. The cellular digital mixer is selected.
H
H
OPERATIONAL MODE
Note: L = Logic Low; H = Logic High
______________________________________________________________________________________
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
noise figure. At the digital mixer outputs, keep the differential signal lines together and of equal length to ensure
signal balance. For best gain and noise performance, solder the slug evenly to the board ground plane.
Table 5. Typical Cascaded Performance of Cellular-Band Receiver with 3dB Interstage
Filter Loss
HIGH GAIN,
HIGH LINEARITY
HIGH GAIN,
LOW LINEARITY
Conversion Power Gain
25.4dB
Noise Figure
2.1dB
-8.9dBm
PARAMETER
Third-Order Input Intercept
LOW GAIN,
HIGH LINEARITY
FM
24.5dB
8.9dB
22.7dB
2.3dB
11.8dB
3.3dB
-10.6dBm
-6.8dBm
-6.8dBm
Table 6. Typical Cascaded Performance of PCS-Band Receiver with 3dB Interstage
Filter Loss
HIGH GAIN,
HIGH LINEARITY
HIGH GAIN,
LOW LINEARITY
LOW GAIN
Conversion Power Gain
24dB
22.5dB
7.5dB
Noise Figure
2.6dB
3.0dB
12.4dB
-7.6dBm
-9.3dBm
7.1dBm
PARAMETER
Third-Order Input Intercept
Table 7. Cellular LNA S Parameters in High-Gain, High-Linearity Mode
FREQUENCY
(MHz)
S11
(mag)
S11
(phase)
S21
(mag)
S21
(phase)
S12
(mag)
S12
(phase)
S22
(mag)
S22
(phase)
700
0.579
-74.8
4.63
92.1
0.085
60.9
0.714
-34.7
750
0.548
-78.4
4.39
87.9
0.089
60.6
0.696
-35.9
800
0.534
-81.2
4.13
84.4
0.0908
60
0.689
-36.6
850
0.52
-83.7
3.88
81.9
0.096
60.1
0.683
-37.6
900
0.51
-86.1
3.7
79.4
0.099
58.8
0.677
-38.3
950
0.503
-88.5
3.5
76.6
0.104
58.3
0.674
-39.3
1000
0.496
-90.6
3.3
74.9
0.109
59.1
0.669
-40.8
______________________________________________________________________________________
17
MAX2320/21/22/24/26/27
Layout Considerations
Keep RF signal lines as short as possible to minimize
losses and radiation. Use high-Q components for the LNA
input matching circuit to achieve the lowest possible
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
Table 8. PCS LNA S Parameters in High-Gain, High-Linearity Mode
FREQUENCY
(MHz)
S11
(mag)
S11
(phase)
S21
(mag)
S21
(phase)
S12
(mag)
S12
(phase)
S22
(mag)
S22
(phase)
1700
0.46
-112
4.22
86
0.077
77
0.64
-51
1750
0.446
-113
4.07
88
0.082
77
0.64
-52
1800
0.44
-113
4.18
88
0.086
76
0.643
-52
1850
0.439
-113
4.23
84
0.09
77
0.657
-53
1900
0.434
-114
3.9
82
0.093
72
0.68
-55
1950
0.43
-115
3.82
84
0.09
75
0.673
-57
2000
0.423
-116
3.85
83
0.094
76
0.681
-58
2050
0.407
-115
3.82
83
0.098
76
0.69
-59
2100
0.391
-112
3.82
81
0.103
74
0.7
-61
2150
0.405
-106
3.68
79
0.101
71
0.695
-63
2200
0.467
-104
3.56
81
0.093
73
0.677
-64
2250
0.503
-107
3.67
82
0.094
79
0.683
-63
2300
0.525
-110
3.83
81
0.099
82
0.705
-64
2350
0.54
-112
3.88
78
0.1
86
0.727
-66
2400
0.55
-113
3.9
75
0.106
93
0.739
-67
2450
0.571
-113
3.79
73
0.126
99
0.754
-69
2500
0.614
-113
3.78
74
0.158
100
0.769
-71
Table 9. Cellular Mixer S11 in High-Gain,
High-Linearity Mode
18
FREQUENCY
(MHz)
S11
(mag)
S11
(phase)
700
0.853
-35.8
750
0.849
-38
800
0.846
-40.2
850
0.844
-42.2
900
0.843
-44.1
950
0.842
-46.3
1000
0.842
-48.5
______________________________________________________________________________________
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
MAX2320/21/22/24/26/27
Table 10. PCS Mixer S11 in High-Gain
High-Linearity Mode
FREQUENCY
(MHz)
S11
(mag)
S11
(phase)
1700
0.865
-62
1750
0.864
-63
1800
0.865
-64
1850
0.867
-64
1900
0.863
-65
1950
0.862
-65
2000
0.861
-66
2050
0.879
-67
2100
0.86
-68
2150
0.858
-68
2200
0.854
-69
2250
0.85
-71
2300
0.845
-72
2350
0.838
-74
2400
0.83
-76
2450
0.825
-78
2500
0.805
-82
Table 11. Mixer IF Port S22
DIGITAL MIXER
FREQUENCY
(MHz)
S22
(mag)
S22
(phase)
50
0.999
-1.10
100
0.999
110
0.999
130
FM MIXER
FREQUENCY
(MHz)
S22
(mag)
S22
(phase)
50
0.999
-1.69
-2.26
70
0.998
-2.38
-2.46
85
0.998
-2.92
0.998
-2.89
100
0.997
-3.38
150
0.998
-3.35
110
0.997
-3.71
200
0.998
-4.45
150
0.996
-4.97
210
0.998
-4.67
200
0.995
-6.49
250
0.997
-5.48
250
0.995
-7.82
300
0.997
-6.48
300
0.994
-9.06
350
0.996
-7.47
350
0.993
-10.28
400
0.996
-8.36
400
0.992
-11.40
______________________________________________________________________________________
19
Typical Application Circuits
MAX2320
(DUAL BAND, DUAL VCO INPUTS, AND DUAL IF OUTPUTS)
C19
2.7pF
869MHz–894MHz
C17
6800pF
4.7nH
1930MHz–1990MHz
R11
30Ω
C14
1.5pF
C1
100pF
R1
20k
L2
6.8nH
1
LNAOUTH
2
LNAOUTL
3
RLNA
MAX2320
4
LNAINH
VCC
MIXINH 20
MIXINL 19
C13
0.01µF
RBIAS 18
PCS DUPLEXER
6800pF 1pF
CELLULAR
DUPLEXER
6800pF
KEY FEATURES: TWO LO INPUT PORTS FOR
SEPARATE VCOs, TWO LO BUFFER OUTPUT PORTS.
L6
5.6nH
L1
1.8nH
C2
100pF
NOTE: THE MAX2320 IS RECOMMENDED FOR
HANDSETS THAT OPERATE IN THREE MODES:
PCS-BAND CDMA, CELLULAR-BAND CDMA,
AND CELLULAR-BAND FM.
C15
6800pF
C18
1pF
VCC
CDMA+ 17
L4
110nH
R5
20k
L5
110nH
C12
3.3pF
1.65nH
R4
2k
3.85nH
C11
3.3pF
CDMA- 16
5
TO VGA
210MHz
LNAINL
VCC
3.3pF
CELLULAR LO
6
LOGIC INPUTS
FROM
CELLULAR PA
DIPLEXER
FROM
PCS PA
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
C3
100pF
BUFFEN 15
LOGIC
INPUT
VCC 14
7
LIN
8
GAIN
FMOUT 13
9
LOLIN
LOLOUT 12
L3
560nH
C9
1000pF
R6
7.5k
C8
4.7pF
FM
TO VGA
10 LOHIN
LOHOUT 11
85MHz
C7
100pF
51Ω
R2
51Ω
20
C10
1000pF
R3
C4
22pF
PCS LO
BAND
VCC
C5
100pF
BUFFERED
LO OUTPUTS
C6
22pF
______________________________________________________________________________________
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
MAX2321
(DUAL BAND, DUAL VCO INPUTS, LO DOUBLER, DUAL IF OUTPUTS, AND LO BUFFER)
C19 869MHz–894MHz
2.7pF
C17
6800pF
4.7nH
4.7nH
NOTE: THE MAX2321 IS RECOMMENDED FOR
TRIPLE-MODE PHONES.
C18
1pF
VCC
KEY FEATURE: LO DOUBLER FOR SINGLE VCO
OPERATION.
1930MHz–1990MHz
R11
30Ω
C14
1.5pF
L6
5.6nH
L1
1.8nH
C1
100pF
R1
20k
L2
6.8nH
C2
100pF
C15
6800pF
1
LNAOUTH
2
LNAOUTL
3
MAX2321
MIXINH 20
MIXINL 19
6800pF
1pF
CELLULAR
DUPLEXER
6800pF
RLNA
3.85nH
C12
3.9pF
184MHz
C11
3.9pF
CDMA- 16
5
LNAINL
6
BAND
TO VGA
VCC
LOGIC INPUTS
FROM
CELLULAR PA
FROM
PCS PA
CDMA+ 17
L5
120nH
R4
2k
C3
100pF
CELLULAR LO
LNAINH
L4
120nH
R5
20k
1.65nH
3.3pF
DIPLEXER
C13
0.01µF
RBIAS 18
PCS DUPLEXER
4
VCC
C4
100pF
7
BUFFEN 15
LOGIC
INPUT
VCC 14
LIN
C10
1000pF
x2
8
GAIN
FMOUT 13
9
LOLIN
LOLOUT 12
10 LOHIN
LOHOUT 11
C7
100pF
R2
51Ω
VCC
R2
51Ω
L3
270nH
C5
100pF
C9
1000pF
R6
7.5k
C8
2.2pF
BUFFERED
LO OUTPUTS
FM
TO VGA
184MHz
C6
22pF
______________________________________________________________________________________
21
MAX2320/21/22/24/26/27
Typical Application Circuits (continued)
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
MAX2320/21/22/24/26/27
Typical Application Circuits (continued)
MAX2322
(PCS BAND, SINGLE MODE WITH OPTIONAL FREQUENCY DOUBLER)
C16
1pF
C14
6800pF
L6
5.6nH
VCC
C13
1.5pF
1930MHz–1990MHz
R11
30Ω
VCC
L1
1.8nH
C1
100pF
NOTE: THE MAX2322 IS RECOMMENDED FOR PCS
SINGLE-BAND PHONES.
R1
20k
1
LNAOUTH
2
N.C.
3
RLNA
4
LNAINH
MAX2322
MIXINH 20
N.C. 19
RBIAS 18
R4
20k
R3
2k
5
N.C.
CDMA- 16
6
SHDN
BUFFEN 15
7
LIN
8
GAIN
9
N.C.
210MHz
LOGIC
INPUT
LOX2 13
C8
1000pF
LOGIC
INPUT
N.C. 12
C6
22pF
LOHOUT 11
VCC
R2
51Ω
22
VCC
C4
100pF
10 LOHIN
TO VGA
C10
3.3pF
VCC 14
x2
PCS OR
CELLULAR
LO
C11
3.3pF
CDMA+ 17
1.65nH
LOGIC INPUTS
FROM PCS PA
6800pF 1pF
L5
110nH
L4
110nH
PCS DUPLEXER
C12
0.01µF
BUFFERED
LO OUTPUT
C5
100pF
______________________________________________________________________________________
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
MAX2324
(CELLULAR BAND, DUAL IF OUTPUTS)
C15 869MHz–894MHz
2.7pF
C14
6800pF
NOTE: THE MAX2324 IS RECOMMENDED
FOR DUAL-MODE (CDMA/FM) PHONES IN
THE CELLULAR BAND.
4.7nH
VCC
R11
30Ω
L1
6.8nH
R1
20k
C1
100pF
LOGIC OUTPUT
CELLULAR
DUPLEXER
6800pF
1
N.C.
2
LNAOUTL
3
4
RLNA
MODEOUT
MAX2324
VCC
N.C. 20
MIXINL 19
C12
0.01µF
RBIAS 18
CDMA+ 17
R5
20k
L4
270nH
L5
270nH
R4
2k
3.85nH
6
LOGIC INPUTS
FROM
CELLULAR PA
TO VGA
85MHz
LNAINL
VCC
3.3pF
C3
100pF
CELLULAR
LO
C10
8.2pF
CDMA- 16
5
C11
8.2pF
SHDN
BUFFEN 15
LOGIC
INPUT
VCC 14
7
LIN
8
GAIN
FMOUT 13
9
LOLIN
LOLOUT 12
C9
1000pF
C8
1000pF
L3
560nH
R6
7.5k
C8
4.7pF
FM
TO VGA
C6
100pF
10 N.C.
N.C. 11
R3
51Ω
BUFFERED
LO OUTPUT
85MHz
VCC
C4
100pF
______________________________________________________________________________________
23
MAX2320/21/22/24/26/27
Typical Application Circuits (continued)
Typical Application Circuits (continued)
MAX2326
(DUAL BAND, DUAL VCO INPUTS, AND DUAL IF OUTPUTS WITH LO DIVIDER)
869MHz–894MHz
C19
2.7pF
C17
6800pF
NOTE: THE MAX2326 IS RECOMMENDED FOR
DUAL-BAND, TRIPLE-MODE PHONES.
4.7nH
C15
6800pF
C18
1pF
VCC
R11
30Ω
L6
5.6nH
L1
1.8nH
L2
6.8nH
C1
100pF
R1
20k
C2
100pF
PCS DUPLEXER
1
LNAOUTH
2
LNAOUTL
3
4
1.65nH
1pF
6800pF
CELLULAR
DUPLEXER
3.85nH
6800pF
5
FROM
CELLULAR PA
AMPS
LO
PCS
LO
LOGIC INPUTS
3.3pF
DIPLEXER
KEY FEATURES: TWO LO INPUT/OUTPUT PORTS
FOR SEPARATE VCOs, A FREQUENCY DIVIDER
TO ALLOW THE USE OF A PCS VCO FOR BOTH
BANDS.
C14
1.5pF
1930MHz–1990MHz
FROM
PCS PA
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
C3
100pF
C4
22pF
VCC
MAX2326
MIXINH 20
MIXINL 19
C13
0.01µF
RBIAS 18
RLNA
LNAINH
CDMA+ 17
L5
120nH
R4
2k
BAND
7
LIN
8
GAIN
9
LOLIN
10 LOHIN
TO VGA
184MHz
LNAINL
6
C12
3.9pF
C11
3.9pF
CDMA- 16
VCC
BUFFEN 15
LOGIC
INPUT
VCC 14
/2
C10
1000pF
C9
1000pF
L3
270nH
R6
7.5k
C8
2.2pF
FM
FMOUT 13
TO VGA
LOLOUT
/2
LOHOUT 11
184MHz
C7
100pF
R3
51Ω
VCC
R2
51Ω
24
L4
120nH
R5
20k
C5
100pF
BUFFERED
LO OUTPUTS
C6
22pF
______________________________________________________________________________________
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
MAX2327
(DUAL BAND, DUAL VCO INPUTS, AND SEPARATELY CONTROLLED VCO BUFFERS)
C17 869MHz–894MHz
2.7pF
C15
6800pF
4.7nH
C16
1pF
VCC
1930MHz–1990MHz
C14
6800pF
1.5pF
NOTE: THE MAX2327 IS RECOMMENDED FOR
DUAL-BAND, TRIPLE-MODE PHONES WITH TDMA
IN THE DIGITAL MODES, e.g., PCS1900 + AMPS.
L6
5.6nH
KEY FEATURES: TWO LO INPUT/OUTPUT PORTS FOR
SEPARATE VCOs, SEPARATELY CONTROLLED VCO BUFFERS.
R11
30Ω
VCC
L1
1.8nH
C1
100pF
L2
6.8nH
C2
100pF
PCS SWITCH
6800pF
1
LNAOUTH
2
LNAOUTL
3
1.65nH
4
N.C.
LNAINH
MAX2327
MIXINH 20
MIXINL 19
IFOUT+ 17
1pF
LOGIC INPUTS
FROM
CELLULAR PA
FROM
PCS PA
3.85nH
3.3pF
DIPLEXER
C3
100pF
AMPS LO
C4
100pF
PCS1900 LO
L4
56nH
R5
20k
L5
56nH
C11
1.5pF
IFOUT- 16
5
LNAINL
6
BAND
C12
1.5pF
PCS1900
R4
2k
CELLULAR
DUPLEXER
6800pF
C13
0.01µF
RBIAS 18
400MHz
VCC
BUFFEN 15
7
SHDN
VCC 14
8
MODE
FMOUT 13
9
LOLIN
LOLOUT 12
LOGIC
INPUT
TO VGA
C10
1000pF
L3
560nH
C9
1000pF
R6
7.5k C8
4.7pF
FM
TO VGA
10 LOHIN
LOHOUT 11
83MHz
C7
100pF
R3
51Ω
VCC
R2
51Ω
C5
100pF
BUFFERED
LO OUTPUTS
C6
22pF
______________________________________________________________________________________
25
MAX2320/21/22/24/26/27
Typical Application Circuits (continued)
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
MAX2320/21/22/24/26/27
Pin Configurations (continued)
TOP VIEW
LNAOUTH 1
20 MIXINH
N.C. 2
19 N.C.
RLNA 3
MAX2322
SHDN 6
LIN 7
20 N.C.
LNAOUTL 2
18 RBIAS
LNAINH 4
N.C. 5
N.C. 1
19 MIXINL
RLNA 3
17 CDMA+
MODEOUT 4
16 CDMA-
LNAINL 5
15 BUFFEN
SHDN 6
14 VCC
18 RBIAS
17 CDMA+
MAX2324
16 CDMA15 BUFFEN
LIN 7
14 VCC
GAIN 8
13 LOX2
GAIN 8
13 FMOUT
N.C. 9
12 N.C.
LOLIN 9
12 LOLOUT
LOHIN 10
11 LOHOUT
N.C. 10
TSSOP
11 N.C.
TSSOP
LNAOUTH 1
20 MIXINH
LNAOUTL 2
19 MIXINL
18 RBIAS
N.C. 3
17 IFOUT+
LNAINH 4
LNAINL 5
MAX2327
16 IFOUT-
BAND 6
15 BUFFEN
SHDN 7
14 VCC
MODE 8
13 FMOUT
LOLIN 9
12 LOLOUT
LOHIN 10
11 LOHOUT
TSSOP
Chip Information
TRANSISTOR COUNT: 1315
26
______________________________________________________________________________________
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
TSSOP.EPS
______________________________________________________________________________________
27
MAX2320/21/22/24/26/27
Package Information
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
NOTES
28
______________________________________________________________________________________