RFMD RF2475

RF2475
Preliminary
8
DUAL-BAND LOW NOISE AMPLIFIER/MIXER
WITH FREQUENCY DOUBLER
Typical Applications
• TDMA Handsets
Product Description
5.00
sq.
1.00
0.85
2.50
Typ.
Typ
0.60
0.24
0.65
0.30
4 PLCS
2
0.30
0.18
2.85 sq.
2.55
0.75
0.50
12°
MAX
0.05
0.01
0.23
0.13
0.50
4 PLCS
8
NOTES:
1 Shaded Pin is Lead 1.
2 Dimension applies to plated terminal: to be measured between 0.02 mm
and 0.25 mm from terminal end.
FRONT-ENDS
The RF2475 includes two downconverting mixers and
associated LNAs. It is designed for IS136 handset applications in the cellular 800MHz and PCS 1900MHz
bands. Each LNA has a gain bypass mode, which is controlled by the gain select pin. The device internally ties the
two mixer outputs together, providing interface to a single
IF SAW filter. A frequency doubler is provided to supply
the LO signal to the PCS mixer and feeds the PCS transmit LO output buffer. A cellular LO output buffer is also
included. The device is fabricated using Gallium Arsenide
HBT technology and is packaged in a 28-pin, 5mmx5mm
leadless package.
0.80
0.65
3 Pin 1 identifier must exist on top surface of package by identification
mark or feature on the package body. Exact shape and size is optional.
4 Package Warpage: 0.05 mm max.
5 Die Thickness Allowable: 0.305 mm max.
Optimum Technology Matching® Applied
ü
Si BJT
Package Style: LCC, 28-Pin, 5x5
GaAs MESFET
Features
GND
GND
MXR VCC8
MXR IN19
TX LO8
VCC TX8
SiGe
LNA OUT19
Si Bi-CMOS
GaAs HBT
28
27
26
25
24
23
22
• Complete Dual-Band Receiver Front-End
• Stepped LNA Gain Control
LNA VCC19
1
21
LO IN8
GND
2
20
GND
LNA IN19
3
19
IF A
GND
4
18
IF B
LNA IN8
5
17
GND
GND
6
16
VCC DOUBLER
GAIN SEL
7
15
VCC TX19
X2
• Integrated LO Frequency Doubler
• Integrated LO Output Buffers
• Meets IS136 Specifications
Functional Block Diagram
Rev A2 010918
Ordering Information
14
TX L019
13
MXR IN8
12
MXR VCC19
11
GND
10
GND
9
LNA OUT
LNA VCC8
8
RF2475
RF2475 PCBA
Dual-Band Low Noise Amplifier/Mixer with Frequency Doubler
Fully Assembled Evaluation Board
RF Micro Devices, Inc.
7628 Thorndike Road
Greensboro, NC 27409, USA
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
8-89
RF2475
Preliminary
Absolute Maximum Ratings
Parameter
Supply Voltage
Input LO and RF Levels
Operating Ambient Temperature
Storage Temperature
Parameter
Rating
Unit
-0.5 to +5.0
+6
-30 to +85
-40 to +150
VDC
dBm
°C
°C
Specification
Min.
Typ.
Max.
Caution! ESD sensitive device.
RF Micro Devices believes the furnished information is correct and accurate
at the time of this printing. However, RF Micro Devices reserves the right to
make changes to its products without notice. RF Micro Devices does not
assume responsibility for the use of the described product(s).
Unit
Condition
Cellular Receive Path
Operational Limits
RF Frequency
LO Frequency
IF Frequency
LNA Input Level
LO Input Level
Supply Voltage
869
950
100
-10
2.7
-7
2.8
894
1045
150
+10
-4
3.3
MHz
MHz
MHz
dBm
dBm
V
Cellular Cascaded
Electrical Specifications
FRONT-ENDS
8
Gain
23
Gain Step
Gain Variations versus Temperature
Noise Figure
14
Input Third Order Intercept1
Return Loss
Isolation
25
8
17
27
+1.5
-10
-2.0
10
10
10
10
60
2.2
15
-9
2.6
20
-0.5
60
IF Output Impedance
Supply Current
dB
dB
dB
dB
TAMB =25°C, VCC =2.8V, fRF =881MHz,
fLO =1016MHz, fIF =135MHz,
LO Level=-7dBm, Image Filter I.L.=3dB
High Gain, Gain Select=High
Low Gain, Gain Select=Low
-30°C to +85°C
dB
dB
dBm
High Gain, Gain Select=High
Low Gain, Gain Select=Low
High Gain, Gain Select=High
dBm
dB
dB
dB
dB
dB
Low Gain, Gain Select=Low
LNA Input - External Match
LNA Output - External Match
Mixer RF Input - External Match
Mixer LO Input - External Match
60
dB
dB
50
50
35
>10
20
25
dB
dB
dB
kΩ
mA
9.0
dBm
dBc
dB
mA
LO IN to LNA IN, Gain Select=High2
LO IN to LNA IN, Gain Select=Low
Image Rejection3
LO IN to IF OUT
Mixer RF IN to IF OUT
Mixer RF IN to TX LO OUT
Mixer “ON”
Not including TX LO buffer
TX LO Buffer
LO Output Buffer
Harmonic Output
Isolation - LO OUT to LO IN
Supply Current
-7
-22
25
-4
-25
7.5
LO Input Level=-7dBm
LO Input Level=-7dBm
TX LO Buffer ON
Logic
Input Low
Input High
Input Current
Input Impedance
0.5
2.0
TBD
TBD
V
V
µA
kΩ
VCC =2.7V to 2.9V
VCC =2.7V to 2.9V
NOTES:
1 LNA input IP3 response to out of band frequencies (824Hz to 849MHz) should be -6dBm in high gain mode.
2 LO IN to LNA IN isolation specification with the 900MHz TX LO buffer on.
3 Image rejection measured with fRF =869MHz, PRF =-105dBm, fLO =1004MHz; PIMAGE =-85dBm, fIMAGE =1139MHz
8-90
Rev A2 010918
RF2475
Preliminary
Parameter
Specification
Min.
Typ.
Max.
Unit
Condition
Cellular Receive Path,
Cont’d
Cellular Block Level
Electrical Specifications
Low Noise Amplifier
Frequency Range
Gain
869
Gain Step
Gain Variations versus Temperature
Noise Figure
14
Input Third Order Intercept
-3
-3
6
+1.0
1.4
Terminating Impedance
Supply Current
Logic Input Low
Logic Input High
894
20
3
17
0
0
50
6
6
1.6
8
8
0.5
2.0
MHz
dB
dB
dB
dB
dB
dB
dBm
dBm
Ω
mA
mA
V
V
High Gain, Gain Select=High
Low Gain, Gain Select=Low
-30°C to +85°C
High Gain, Gain Select=High
Low Gain, Gain Select=Low
High Gain, Gain Select=High
Low Gain, Gain Select=Low
External Match
High Gain, Gain Select=High
Low Gain, Gain Select=Low
VCC =2.7V to 2.9V
VCC =2.7V to 2.9V
Mixer and LO Buffer
869
85
950
7
7
External Match
10
Ω
External Match
>10
kΩ
Mixer “ON”
-7
14
-7
7.5
-4
1930
1015
1039
1990
1063
MHz
MHz
2030
2078
2126
MHz
-7
2.8
150
+10
-4
3.3
MHz
dBm
dBm
V
-10
8
MHz
MHz
MHz
dB
dB
dBm
Ω
8
11
8
50
894
150
1045
9
12
19
-4
9.0
mA
dBm
mA
dBm
FRONT-ENDS
Frequency Range, Mixer Input
Frequency Range, IF Output
Frequency Range, LO Input
Conversion Gain
Noise Figure (SSB)
Input Third Order Intercept
Terminating Impedance,
Mixer In, LO In, LO Out
Terminating Impedance,
Mixer In, LO In, LO Out
Return Loss
Terminating Impedance,
IF Out
Mixer Supply Current
LO Input Level
LO Buffer Supply Current
LO Output Level
PCS Receive Path
Operational Limits
RF Frequency
Frequency Range, LO Input to
Doubler
Frequency Range, Doubler Output
IF Frequency
LNA Input Level
LO Input Level
Supply Voltage
Rev A2 010918
100
-10
2.7
LO input to device at LO IN8.
Internal output of LO doubler driving the
mixer and TX LO buffer.
8-91
RF2475
Parameter
Preliminary
Specification
Min.
Typ.
Max.
Unit
Condition
PCS Receive Path, Cont’d
PCS Cascaded
Electrical Specifications
Gain
24
Gain Step
Gain Variations versus Temperature
Noise Figure
17
Input Third Order Intercept
-12
-2
10
10
10
10
40
Return Loss
Isolation
FRONT-ENDS
28
+1.5
40
35
8
26
6
20
Half IF Spur6
IF Output Impedance
Supply Current
2.8
15
-10
-0.5
3.3
20
dB
dB
dB
dB
dB
dB
dBm
dBm
dB
dB
dB
dB
dB
37
dB
dB
>53
>40
35
-68
dB
dB
dB
dBc
>10
28
TAMB =25°C, VCC =2.8V, fRF =1960MHz,
fLO =2095MHz, fIF =135MHz,
LO Level=-7dBm, Image Filter I.L.=3dB
High Gain, Gain Select=High
Low Gain, Gain Select=Low
-30°C to +85°C
High Gain, Gain Select=High
Low Gain, Gain Select=Low
High Gain, Gain Select=High
Low Gain, Gain Select=Low
LNA Input - External Match
LNA Output - External Match
Mixer RF Input - External Match
Mixer LO Input - External Match
LO IN to LNA IN, Gain Select=High4
LO IN to LNA IN, Gain Select=Low
Image Rejection5
LO IN to IF OUT
Mixer RF IN to IF OUT
Mixer RF IN to TX LO OUT
33
kΩ
mA
Mixer “ON”
Including the LO doubler, but not the TX LO
buffer
9.0
dBm
dBc
dBc
dB
mA
LO Input Level=-7dBm
LO Input Level=-7dBm
Fundamental Suppression
TX LO Buffer ON
Including the LO doubler and the TX LO
buffer
TX LO Buffer
LO Doubler Output Buffer
Harmonic Output
Doubler Harmonic Output
Isolation - LO OUT to LO IN
Supply Current
-5
-22
-45
35
-3
-25
-50
7.5
Logic
Input Low
Input High
Input Current
Input Impedance
0.5
2.0
TBD
TBD
V
V
µA
kΩ
VCC =2.7V to 2.9V
VCC =2.7V to 2.9V
NOTES:
4 LO IN to LNA IN isolation specification with the 1900MHz TX LO buffer on.
5 Image rejection measured with fRF =1930MHz, PRF =-105dBm, fLO =2065MHz; PIMAGE =-85dBm, fIMAGE =2220MHz.
Image interferer should be suppressed 11dB below desired signal at the IF output.
6 2LO+2RF Half IF Spur. (1/2 IF spur relative to P1/2RF) fRF =1930MHz, PRF =-105dBm, fLO =2065MHz;
F1/2IF =1997.5MHz, P1/2IF =-48dBm.
1/2 IF interferer should be suppressed 11dB below desired signal at the IF output.
8-92
Rev A2 010918
RF2475
Preliminary
Parameter
Specification
Min.
Typ.
Max.
Unit
Condition
PCS Receive Path, Cont’d
PCS Block Level
Electrical Specifications
Low Noise Amplifier
Frequency Range
Gain
1930
Gain Step
Gain Variations versus Temperature
Noise Figure
16
Input Third Order Intercept
-7
-2
+1.0
1.7
Terminating Impedance
Supply Current
Logic Input Low
Logic Input High
1990
22
2
20
-6
0
50
8
8
1.9
9
9
0.5
2.0
MHz
dB
dB
dB
dB
High Gain, Gain Select=High
Low Gain, Gain Select=Low
-30°C to +85°C
dB
dB
dBm
dBm
Ω
mA
mA
V
V
High Gain, Gain Select=High
Low Gain, Gain Select=Low
High Gain, Gain Select=High
Low Gain, Gain Select=Low
High Gain, Gain Select=High
Low Gain, Gain Select=Low
VCC =2.7V to 2.9V
VCC =2.7V to 2.9V
MHz
MHz
MHz
LO input to device at LO IN8.
Mixer and LO Buffer
1930
100
1015
1039
1990
150
1063
2030
2078
2126
MHz
7
8
13
35
8
50
9
4
dB
dB
dBm
dBm
Ω
External Match
10
Ω
External Match
>10
kΩ
Mixer “ON”
Including the LO doubler, but not the TX LO
buffer
7
LO Input Level
LO Buffer Supply Current
-10
LO Output Level
-5
Rev A2 010918
23
28
mA
-7
7.5
-4
8.0
dBm
mA
-2
8
Internal output of LO doubler driving the
mixer and TX LO buffer.
FRONT-ENDS
Frequency Range, Mixer Input
Frequency Range, IF Output
Frequency Range, LO Input to
Doubler
Frequency Range, Doubler Output
Conversion Gain
Noise Figure (SSB)
Input Second Order Intercept
Input Third Order Intercept
Terminating Impedance,
Mixer In, LO In, LO Out
Terminating Impedance,
Mixer In, LO In, LO Out
Return Loss
Terminating Impedance,
IF Out
Mixer Supply Current
Including the LO doubler and the TX LO
buffer
dBm
8-93
RF2475
Pin
1
2
FRONT-ENDS
8
Preliminary
Function Description
Interface Schematic
LNA VCC19 PCS LNA supply voltage. Local bypass capacitor required.
Ground connection. Keep traces physically short and connect immediGND
3
LNA IN19
4
GND
5
LNA IN8
6
GND
7
8
9
10
GAIN SEL
LNA VCC8
LNA OUT
GND
11
GND
12
MXR VCC19
13
14
15
MXR IN8
TX LO19
VCC TX19
16
17
VCC
DOUBLER
GND
18
IF B
19
IF A
20
GND
21
22
23
24
25
26
LO IN8
VCC TX8
TX LO8
MXR IN19
MXR VCC8
GND
27
GND
28
Pkg
Base
LNA OUT19
GND
ately to ground plane for best performance.
PCS LNA input. AC-coupled. Requires external 50Ω matching components.
Ground connection. Keep traces physically short and connect immediately to ground plane for best performance.
Cellular LNA input. AC-coupled. Requires external 50Ω matching components.
Ground connection. Keep traces physically short and connect immediately to ground plane for best performance.
Gain select control input. Logic high=high gain, logic low=low gain.
Cellular LNA RF supply voltage. Local bypass capacitor required.
Cellular LNA output. AC-coupled. Requires matching to 50Ω.
Ground connection. Keep traces physically short and connect immediately to ground plane for best performance.
Ground connection. Keep traces physically short and connect immediately to ground plane for best performance.
PCS mixer and RX LO doubler enable supply voltage. Local bypass
capacitor required.
Cellular RF mixer input. AC-coupled. Requires matching to 50Ω.
PCS Transmit LO buffer output. Requires matching to 50Ω.
PCS TX LO buffer and TX LO doubler enable supply voltage. Local
bypass capacitor required.
Doubler output supply voltage for PCS RX and PCS TX modes. See
Note 1.
Ground connection. Keep traces physically short and connect immediately to ground plane for best performance.
Mixer IF B output. Open collector output, requires external matching
components and DC connection to VCC.
Mixer IF A output. Open collector output, requires external matching
components and DC connection to VCC.
Ground connection. Keep traces physically short and connect immediately to ground plane for best performance.
Mixer LO input. AC-coupled. Requires matching to 50Ω.
Cellular TX LO buffer supply voltage. Local bypass capacitor required.
Cellular TX LO buffer output. AC-coupled. Requires matching to 50Ω.
PCS RF mixer input. AC-coupled. Requires matching to 50Ω.
Cellular mixer supply voltage. Local bypass capacitor required.
Ground connection. Keep traces physically short and connect immediately to ground plane for best performance.
Ground connection. Keep traces physically short and connect immediately to ground plane for best performance.
PCS LNA output. AC-coupled. Requires matching to 50Ω.
Ground connection. The backside of the package should be soldered to
a top side ground pad which is connected to the ground plane with multiple vias. The pad should have a short thermal path to the ground
plane.
NOTE:
The LO doubler is enabled by either MXR VCC19 (PCS RX mode) or TX LO19 (PCS TX mode). VCC DOUBLER is the
DC current return path for the output of the doubler. This should be connected to the PLL VCC or a supply that is on in
both the TX and RX modes of the 1900MHz band of operation. In the Cellular mode, the doubler is powered down to
save current, even when VCC DOUBLER is energized. Therefore, the VCC DOUBLER pin can be connected to a supply
that is on in all modes, while minimizing the current consumption of the device.
8-94
Rev A2 010918
RF2475
Preliminary
Truth Table of Pin-by-Pin Biasing
Pin #
Pin
Name
Biased
by VCC
Supply
Mode
1
28
8
9
12
14
15
16
18
19
22
23
25
LNA
VCC19
RX19
VCC
LNA
OUT19
RX19
VCC
LNA
VCC8
RX8
VCC
LNA
OUT8
RX8
VCC
MXR
VCC19
RX19
VCC
TX
LO19
TX19
VCC
VCC
TX19
TX19
VCC
DOUBLER
VCC
PLL
VCC
IF B
IF A
IF
VCC
IF
VCC
VCC
TX8
TX8
VCC
TX
LO8
TX8
VCC
MXR
VCC8
RX8
VCC
RX-800
L
L
H
H
L
L
L
H
H
H
L
L
H
RX-1900
H
H
L
L
H
L
L
H
H
H
L
L
L
TX-800
L
L
L
L
L
L
L
H
L
L
H
H
L
TX-1900
L
L
L
L
L
H
H
H
L
L
L
L
L
L=
H=
Supply Off
Supply On
Power Control Modes
Mode
Pin Name
RX19
LNA VCC19
Pin #
1
Controls the Following Circuit Functions
1900MHz LNA Bias
MXR VCC19
12
Mixer RF Amplifier
Mixer LO Driver
RX LO Doubler
16
DC Return for the LO Doubler
IF B
18
DC Return for Mixer
IF A
19
DC Return for Mixer
LNA VCC8
8
800MHz LNA Bias
MXR VCC8
25
Mixer RF Amplifier
IF B
18
DC Return for Mixer
IF A
19
DC Return for Mixer
TX8
VCC TX8
22
800MHz TX LO Buffer
TX19
VCC TX19
15
1900MHz TX LO Buffer
Doubler VCC
16
DC Return for the LO Doubler
8
FRONT-ENDS
RX8
Doubler VCC
Mixer LO Driver
TX LO Doubler
NOTES:
There are separate RX/TX LO doublers with a common output.
The DC return path for both the TX and RX doublers is via the PLL VCC which is on in all TX and RX modes.
This allows sharing of the LC load at the doubler output, which saves a significant amount of die area.
Rev A2 010918
8-95
RF2475
Preliminary
8-96
GND
GND
MXR VCC8
MXR IN19
TX LO8
VCC TX8
28
27
26
25
24
23
22
20
GND
LNA IN19
3
19
IF A
GND
4
18
IF B
LNA IN8
5
17
GND
GND
6
16
VCC DOUBLER
GAIN SEL
7
15
VCC TX19
8
9
10
11
12
13
14
TX L019
2
MXR IN8
GND
MXR VCC19
LO IN8
GND
21
GND
1
LNA OUT
LNA VCC19
LNA VCC8
FRONT-ENDS
8
LNA OUT19
Pin Out
Rev A2 010918
RF2475
Preliminary
Evaluation Board Schematic
(Download Bill of Materials from www.rfmd.com.)
P2
P1
P1-1
P1-4
1
VCC
2
GND
P2-2
3
GND
P2-3
4
VCC
1
GND
2
GAIN SEL
3
GAIN
NOTES:
1. For best image rejection, provide a common ground under the device connecting pins 10, 11, 26, and 27.
2. There is a single gain select pin for both frequency bands.
3. The image reject SAW filters are assumed to have a 3 dB insertion loss and 40 dB of image rejection.
4. Parts with "*" should not be populated on the evaluation board.
CON3
CON4
FL2*
1
IN
GND GND
C21*
DNI
GND GND
2
OUT
5
R3*
DNI
6
C1
1 nF
4
VCC MX1
FAR-F6CE1G9600-L2XB
50 Ω µstrip
3
R2
0Ω
L14
10 nH
50 Ω µstrip
C4
0.5 pF
C5
3 pF
50 Ω µstrip
VCC LNA2
L1
8.2 nH
R1
0Ω
R5
300 Ω
L2
18 nH
L3
7.5 nH
C2
3 pF
28
27
26
25
24
23
C7
100 pF
22
50 Ω µstrip
21
L4
4.7 nH
C23
10 pF
2
J9
LNA2 IN
20
J3
LO1 IN
C36
3 pF
C37
33 nF
3
L12
3.9 nH
J8
LNA1 IN
C38
4 pF
J10
LO1 OUT
C6
4 pF
VCC LO1
1
50 Ω µstrip
J2
MX2 IN
L13
56 nH
X2
19
4
18
5
17
6
16
7
15
VCC IF
C8*
DNI
L5
56 nH
C11
8 pF
L6
56 nH
C9
3 pF
L7
150 nH
50 Ω µstrip
C38
33 nF
L12
3.9 nH
C24*
DNI
C22
1 nF
R6*
DNI
C10
1 nF
50 Ω µstrip
8
J4
IF OUT
C12
10 pF
FRONT-ENDS
J1
LNA2 OUT
Part of Test Board
VCC DBLR
TRL1
8
9
10
11
GAIN SEL
12
13
+ C14
100 pF
14
VCC LO2
C18
3 pF
R7
510 Ω
VCC LNA1
J7
LNA1 OUT
J6
MX1 IN
C15
1.5 pF
6
3
R4
0Ω
50 Ω µstrip
J5
LO2 OUT
C16
1.5 pF
OUT
L15
2.7 nH
R9*
DNI
5
FL1*
FAR-F5CE881M50-K210
4
R10
0Ω
50 Ω µstrip
IN
GND GND
R11*
DNI 2
L8
1.8 nH
L11
12 nH
GND GND
C19
1.2 pF
1
C20
100 pF
C13
3 pF
R8
0Ω
C17
3 pF
L9
39 nH
2475400, Rev. -
50 Ω µstrip
VCC MX2
Part of Test Board
VCC
C25 +
1 uF
Rev A2 010918
C26
1 nF
JP1
1
2
Gain
3
4
VCC LNA2
5
6
VCC MX2
7
8
VCC LO2
9
10
VCC DBLR
11
12
VCC IF
13
14
VCC MX1
15
16
VCC LO1
17
18
HEADER 9X2
VCC LNA1
C28
1 nF
C29
1 nF
C30
1 nF
C35
1 nF
C34
1 nF
C31
1 nF
C32
1 nF
C33
1 nF
C27
1 nF
8-97
RF2475
Preliminary
Evaluation Board Layout
Board Size 2.6” x 2.0”
Board Thickness 0.058”, Board Material FR-4, Multi-Layer
Assembly
Top
FRONT-ENDS
8
8-98
Rev A2 010918
RF2475
Preliminary
Inner 1
Inner 2
Back
FRONT-ENDS
8
Rev A2 010918
8-99
RF2475
Preliminary
LNA1 Gain versus Frequency
Gain Select=High, 882 MHz
21.0
20.0
20.0
19.0
19.0
Gain (dB)
Gain (dB)
LNA1 Gain versus Supply Voltage
Gain Select=High, VCC=2.8 V
21.0
18.0
18.0
+25°C Gain
-40°C Gain
+85°C Gain
17.0
16.0
865.0
+25°C Gain
-40°C Gain
+85°C Gain
17.0
16.0
870.0
875.0
880.0
885.0
890.0
895.0
900.0
2.6
2.7
2.8
Frequency (MHz)
LNA1 Noise Figure versus Frequency
1.5
1.0
3.4
3.3
3.4
1.5
1.0
0.5
0.0
865.0
0.0
870.0
875.0
880.0
885.0
890.0
895.0
900.0
2.6
2.7
2.8
Frequency (MHz)
2.9
3.0
3.1
3.2
Supply Voltage (V)
LNA1 Input IP3 versus Frequency
LNA1 Input IP3 versus Supply Voltage
Gain Select=High, -40 dBm per tone, 1 MHz Separation, VCC=2.8 V
Gain Select=High, 882/883 MHz, -40dBm per tone
2.0
-1.0
1.0
-2.0
0.0
IIP3 (dBm)
0.0
-3.0
-1.0
+25°C IIP3
+25°C IIP3
-40°C IIP3
-4.0
-40°C IIP3
-2.0
+85°C IIP3
-5.0
865.0
+85°C IIP3
-3.0
870.0
875.0
880.0
885.0
Frequency (MHz)
8-100
3.3
2.0
Noise Figure (dB)
Noise Figure (dB)
3.2
Gain Select=High, 882 MHz
0.5
IIP3 (dBm)
FRONT-ENDS
3.1
2.5
2.0
8
3
LNA1 Noise Figure versus Supply Voltage
Gain Select=High, VCC=2.8 V
2.5
2.9
Supply Voltage (V)
890.0
895.0
900.0
2.6
2.7
2.8
2.9
3
3.1
3.2
3.3
3.4
Supply Voltage (V)
Rev A2 010918
RF2475
Preliminary
Mixer1 Gain versus Frequency
Mixer1 Gain versus Supply Voltage
RX Mode, VCC=2.8 V, LO PIN=-7 dBm
10.0
RX Mode, 882 MHz, LO PIN=-7 dBm
10.0
9.0
9.0
Gain (dB)
Gain (dB)
8.0
7.0
8.0
7.0
6.0
+25°C Gain
-40°C Gain
+85°C Gain
5.0
4.0
865.0
+25°C Gain
-40°C Gain
+85°C Gain
6.0
5.0
870.0
875.0
880.0
885.0
890.0
895.0
2.6
900.0
2.7
2.8
Frequency (MHz)
3.1
3.2
3.3
3.4
Mixer1 SSB Noise Figure versus Supply Voltage
RX Mode, VCC=2.8 V, LO PIN=-7 dBm
RX Mode, 882 MHz, LO PIN=-7 dBm
13.0
12.0
11.0
10.0
9.0
8
11.0
FRONT-ENDS
SSB Noise Figure (dB)
12.0
SSB Noise Figure (dB)
3
Supply Voltage (V)
Mixer1 SSB Noise Figure versus Frequency
13.0
2.9
10.0
9.0
8.0
865.0
8.0
870.0
875.0
880.0
885.0
890.0
895.0
900.0
2.6
2.7
2.8
Frequency (MHz)
2.9
3.0
3.1
3.2
3.3
3.4
Supply Voltage (V)
Mixer1 Input IP3 versus Frequency
Mixer1 Input IP3 versus Supply Voltage
RX Mode, -30 dBm per tone, 1 MHz Separation, VCC=2.8 V, LO PIN=-7 dBm
RX Mode, 882/883 MHz, -30dBm per tone, LO PIN=-7 dBm
11.0
10.0
9.0
10.0
IIP3 (dBm)
IIP3 (dBm)
8.0
7.0
9.0
8.0
6.0
+25°C IIP3
-40°C IIP3
+85°C IIP3
5.0
4.0
865.0
+25°C IIP3
-40°C IIP3
+85°C IIP3
7.0
6.0
870.0
875.0
880.0
885.0
Frequency (MHz)
Rev A2 010918
890.0
895.0
900.0
2.6
2.7
2.8
2.9
3
3.1
3.2
3.3
3.4
Supply Voltage (V)
8-101
RF2475
Preliminary
LNA2 Gain versus Frequency
Gain Select=High, 1960 MHz
24.0
23.0
23.0
22.0
22.0
Gain (dB)
Gain (dB)
LNA2 Gain versus Supply Voltage
Gain Select=High, VCC=2.8 V
24.0
21.0
21.0
19.0
1920.0
+25°C Gain
+25°C Gain
-40°C Gain
+85°C Gain
20.0
-40°C Gain
+85°C Gain
20.0
19.0
1930.0
1940.0
1950.0
1960.0
1970.0
1980.0
1990.0
2000.0
2.6
2.7
2.8
Frequency (MHz)
LNA2 Noise Figure versus Frequency
Noise Figure (dB)
Noise Figure (dB)
0.5
3.4
3.3
3.4
1.5
1.0
0.5
0.0
1920.0
0.0
1930.0
1940.0
1950.0
1960.0
1970.0
1980.0
1990.0
2000.0
2.6
2.7
2.8
Frequency (MHz)
2.9
3.0
3.1
3.2
Supply Voltage (V)
LNA2 Input IP3 versus Frequency
LNA2 Input IP3 versus Supply Voltage
Gain Select=High, -40 dBm per tone, 1 MHz Separation, VCC=2.8 V
Gain Select=High, 1960/1961 MHz, -40 dBm per tone
-5.0
-4.0
-6.0
-5.0
-7.0
IIP3 (dBm)
IIP3 (dBm)
FRONT-ENDS
3.3
2.0
1.0
-6.0
+25°C IIP3
-40°C IIP3
+85°C IIP3
-7.0
-8.0
1920.0
-8.0
+25°C IIP3
-40°C IIP3
-9.0
+85°C IIP3
-10.0
1930.0
1940.0
1950.0
1960.0
1970.0
Frequency (MHz)
8-102
3.2
Gain Select=High, 1960 MHz
1.5
-3.0
3.1
2.5
2.0
8
3
LNA2 Noise Figure versus Supply Voltage
Gain Select=High, VCC=2.8 V
2.5
2.9
Supply Voltage (V)
1980.0
1990.0
2000.0
2.6
2.7
2.8
2.9
3
3.1
3.2
3.3
3.4
Supply Voltage (V)
Rev A2 010918
RF2475
Preliminary
Mixer2 Gain versus Frequency
Mixer2 Gain versus Supply Voltage
RX Mode, VCC=2.8 V, LO PIN=-7 dBm
10.0
RX Mode, 1960 MHz, LO PIN=-7 dBm
9.0
9.0
8.0
Gain (dB)
Gain (dB)
8.0
7.0
7.0
6.0
6.0
+25°C Gain
-40°C Gain
+85°C Gain
5.0
4.0
1920.0
+25°C Gain
-40°C Gain
5.0
+85°C Gain
4.0
1930.0
1940.0
1950.0
1960.0
1970.0
1980.0
1990.0
2.6
2000.0
2.7
2.8
Frequency (MHz)
3.2
3.3
3.4
RX Mode, 1960 MHz, LO PIN=-7 dBm
16.0
15.0
14.0
14.0
13.0
12.0
11.0
8
FRONT-ENDS
15.0
SSB Noise Figure (dB)
SSB Noise Figure (dB)
3.1
Mixer2 SSB Noise Figure versus Supply Voltage
RX Mode, VCC=2.8 V, LO PIN=-7 dBm
10.0
13.0
12.0
11.0
10.0
9.0
1920.0
9.0
1930.0
1940.0
1950.0
1960.0
1970.0
1980.0
1990.0
2000.0
2.6
2.7
2.8
Frequency (MHz)
2.9
3.0
3.1
3.2
3.3
Mixer2 Input IP3 versus Frequency
Mixer2 Input IP3 versus Supply Voltage
RX Mode, -30 dBm per tone, 1 MHz Separation, VCC=2.8 V, LO PIN=-7 dBm
RX Mode, 1960/1961 MHz, -30 dBm per tone, LO PIN=-7 dBm
10.0
12.0
9.0
11.0
8.0
10.0
7.0
6.0
9.0
8.0
+25°C IIP3
-40°C IIP3
+85°C IIP3
5.0
4.0
1920.0
3.4
Supply Voltage (V)
IIP3 (dBm)
IIP3 (dBm)
3
Supply Voltage (V)
Mixer2 SSB Noise Figure versus Frequency
16.0
2.9
+25°C IIP3
-40°C IIP3
+85°C IIP3
7.0
6.0
1930.0
1940.0
1950.0
1960.0
1970.0
Frequency (MHz)
Rev A2 010918
1980.0
1990.0
2000.0
2.6
2.7
2.8
2.9
3
3.1
3.2
3.3
3.4
Supply Voltage (V)
8-103
RF2475
Preliminary
10.0
9.0
14
9.0
8.0
13
7.0
12
6.0
11
Gain (dB), IIP3 (dBm)
15
SSB Noise Figure (dB)
Gain (dB), IIP3 (dBm)
Mixer2 versus LO Amplitude
RX Mode, 882 MHz, VCC=2.8 V
RX Mode, 1960 MHz, VCC=2.8 V
17
Gain (dB)
IIP3 (dBm)
SSB NF (dB)
16
8.0
15
7.0
14
6.0
13
5.0
12
SSB Noise Figure (dB)
Mixer1 versus LO Amplitude
10.0
Gain (dB)
5.0
4.0
-11.0
IIP3 (dBm)
SSB NF (dB)
-10.0
-9.0
10
-8.0
-7.0
-6.0
-5.0
-4.0
9
-3.0
4.0
-11.0
-10.0
-9.0
LO Amplitude (dBm)
30.0
LNA1+Mixer1 Gain versus Supply Voltage
30.0
26.0
Gain (dB)
Gain (dB)
-4.0
RX Mode, Gain Select=High, 882 MHz, LO PIN=-7 dBm
26.0
11
-3.0
24.0
+25°C Gain
-40°C Gain
+85°C Gain
22.0
+25°C Gain
-40°C Gain
+85°C Gain
22.0
20.0
870.0
875.0
880.0
885.0
890.0
895.0
900.0
2.6
2.7
2.8
Frequency (MHz)
2.9
3
3.1
3.2
3.3
3.4
Supply Voltage (V)
LNA1 + Mixer1 Input IP3 versus Frequency
LNA1 + Mixer1 SSB Noise Figure versus Frequency
RX Mode, Gain Select=High, 882/883 MHz, -40 dBm per tone, VCC=2.8 V, LO PIN=-7
-7.0
dBm
3.0
-8.0
RX Mode, Gain Select=High, VCC=2.8 V, LO PIN=-7 dBm
2.5
SSB Noise Figure (dB)
-9.0
-10.0
-11.0
-12.0
+25°C IIP3
-40°C IIP3
+85°C IIP3
-13.0
870.0
875.0
880.0
885.0
Frequency (MHz)
8-104
-5.0
LNA1 + Mixer1 Gain versus Frequency
28.0
-14.0
865.0
-6.0
RX Mode, Gain Select= High, VCC=2.8 V, LO PIN=-7 dBm
28.0
20.0
865.0
-7.0
LO Amplitude (dBm)
24.0
IIP3 (dBm)
FRONT-ENDS
8
-8.0
890.0
895.0
2.0
1.5
1.0
0.5
900.0
0.0
865.0
870.0
875.0
880.0
885.0
890.0
895.0
900.0
Frequency (MHz)
Rev A2 010918
RF2475
Preliminary
LNA1 + Mixer1 SSB Noise Figure versus Supply Voltage
LNA1+Mixer1 Input IP3 versus Supply Voltage
RX Mode, Gain Select=High, VCC=2.8 V, LO PIN=-7 dBm
RX Mode, Gain Select=High, 882/883 MHz, -40 dBm per tone, LO PIN=-7 dBm
3.0
-5.0
-6.0
-7.0
2.0
IIP3 (dBm)
1.5
-8.0
-9.0
1.0
-10.0
0.5
+25°C IIP3
-40°C IIP3
+85°C IIP3
-11.0
-12.0
0.0
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
2.6
3.4
2.7
2.8
Supply Voltage (V)
3
3.1
3.2
3.3
LNA2 + Mixer2 Gain versus Frequency
LNA2+Mixer2 Gain versus Supply Voltage
RX Mode, Gain Select=High, VCC=2.8 V, LO PIN=-7 dBm
RX Mode, Gain Select=High, 1960 MHz, LO PIN=-7 dBm
30.0
28.0
28.0
26.0
26.0
Gain (dB)
Gain (dB)
30.0
2.9
3.4
Supply Voltage (V)
24.0
8
FRONT-ENDS
SSB Noise Figure (dB)
2.5
24.0
+25°C Gain
-40°C Gain
+85°C Gain
22.0
20.0
1920.0
+25°C Gain
-40°C Gain
+85°C Gain
22.0
20.0
1930.0
1940.0
1950.0
1960.0
1970.0
1980.0
1990.0
2000.0
2.6
2.7
2.8
Frequency (MHz)
2.9
3
3.1
3.2
3.3
3.4
Supply Voltage (V)
LNA2 + Mixer2 Input IP3 versus Frequency
LNA2 + Mixer2 SSB Noise Figure versus Frequency
RX Mode, Gain Select=High, 1960/1961 MHz, -40 dBm per tone, VCC=2.8 V, LO PIN=-7 dBm
-9.0
4.0
RX Mode, Gain Select=High, VCC=2.8 V, LO PIN=-7 dBm
-10.0
3.0
SSB Noise Figure (dB)
IIP3 (dBm)
-11.0
-12.0
-13.0
-14.0
2.0
1.0
+25°C IIP3
-40°C IIP3
+85°C IIP3
-15.0
-16.0
1920.0
1930.0
1940.0
1950.0
1960.0
1970.0
Frequency (MHz)
Rev A2 010918
1980.0
1990.0
2000.0
0.0
1920.0
1930.0
1940.0
1950.0
1960.0
1970.0
1980.0
1990.0
2000.0
Frequency (MHz)
8-105
RF2475
Preliminary
LNA2 + Mixer2 SSB Noise Figure versus Supply Voltage
LNA2+Mixer2 IIP3 versus Supply Voltage
RX Mode, Gain Select=High, 1960/1961 MHz, -40 dBm per tone, LO PIN=-7 dBm
RX Mode, Gain Select=High, VCC=2.8 V, LO PIN=-7 dBm
4.0
-10.0
-11.0
IIP3 (dBm)
SSB Noise Figure (dB)
3.0
2.0
-12.0
-13.0
+25°C IIP3
1.0
-14.0
0.0
-40°C IIP3
+85°C IIP3
-15.0
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
2.6
3.4
2.7
2.8
Supply Voltage (V)
35.0
3
3.1
3.2
3.3
3.4
LNA1+Mixer1 Current versus Supply Voltage
LNA2+Mixer2 Current versus Supply Voltage
RX Mode, Gain Select=High, 882 MHz, LO PIN=-7 dBm
RX Mode, Gain Select=High, 1960 MHz, LO PIN=-7 dBm
45.0
40.0
8
Current (mA)
25.0
+25°C Current
-40°C Current
+85°C Current
20.0
35.0
30.0
+25°C Current
-40°C Current
+85°C Current
25.0
15.0
20.0
2.6
2.7
2.8
2.9
3
3.1
3.2
3.3
2.6
3.4
2.7
2.8
Supply Voltage (V)
3
3.1
3.2
3.3
LNA1 + Mixer1 versus LO Amplitude
LNA2 + Mixer2 versus LO Amplitude
RX Mode, Gain Select=High, 882 MHz, VCC=2.8 V
RX Mode, Gain Select=High, 1960 MHz, VCC=2.8 V
3.4
30.0
28.0
-9.0
28.0
-12.0
26.0
-10.0
26.0
-13.0
24.0
-11.0
24.0
-14.0
Gain (dB)
-8.0
IIP3 (dBm)
30.0
2.9
Supply Voltage (V)
Gain (dB)
Gain (dB)
22.0
-12.0
22.0
-15.0
IIP3 (dBm)
IIP3 (dBm)
20.0
-11.0
-10.0
-9.0
-8.0
-7.0
-6.0
LO Amplitude (dBm)
8-106
-5.0
-4.0
-11.0
IIP3 (dBm)
Current (mA)
30.0
Gain (dB)
FRONT-ENDS
2.9
Supply Voltage (V)
-13.0
-3.0
20.0
-11.0
-10.0
-9.0
-8.0
-7.0
-6.0
-5.0
-4.0
-16.0
-3.0
LO Amplitude (dBm)
Rev A2 010918
RF2475
Preliminary
LO Isolation
LO Isolation
Low Band Cascaded Configuration, Supply Voltage=2.8 V
High Band Cascaded Configuration, Supply Voltage=2.8 V
0.0
0.0
LO1-LNA2in
LO1-LNA1in
-20.0
-30.0
Isolation (dB)
-40.0
Isolation (dB)
LO1-IFout
-10.0
LO1-IFout
-20.0
-60.0
-80.0
-40.0
-50.0
-60.0
-70.0
-100.0
-80.0
-120.0
500.0
600.0
700.0
800.0
900.0
1000.0
1100.0
1200.0
1300.0
Frequency (MHz)
-90.0
700.0
800.0
900.0
1000.0
1100.0
1200.0
1300.0
Frequency (MHz)
LO Doubler Isolation
High Band Cascaded Configuration, Supply Voltage=2.8 V
0.0
LO1(X2)-IFout
-10.0
LO1(X2)-LNA2in
-20.0
8
-40.0
FRONT-ENDS
Isolation (dB)
-30.0
-50.0
-60.0
-70.0
-80.0
-90.0
-100.0
1500.0
1700.0
1900.0
2100.0
2300.0
2500.0
Frequency (MHz)
Rev A2 010918
8-107
RF2475
Preliminary
FRONT-ENDS
8
8-108
Rev A2 010918