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Preliminary
RF2475
DUAL-BAND LOW NOISE AMPLIFIER/MIXER WITH FREQUENCY DOUBLER
8
Typical Applications
* TDMA Handsets
Product Description
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.
1.00 0.85 0.80 0.65 Typ 0.60 0.24
5.00 sq. 2.50 Typ.
0.65 0.30
4 PLCS
2
0.30 0.18
2.85 sq. 2.55
12 MAX 0.05 0.01
0.75 0.50 0.50 0.23 0.13
4 PLCS
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. 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.
8
FRONT-ENDS
Optimum Technology Matching(R) Applied
Si BJT Si Bi-CMOS
LNA OUT19
u
GND
Package Style: LCC, 28-Pin, 5x5
GaAs HBT SiGe
MXR VCC8 MXR IN19
GaAs MESFET
Features
VCC TX8 TX LO8
GND
* Complete Dual-Band Receiver Front-End * Stepped LNA Gain Control
21 LO IN8
28 LNA VCC19 1
27
26
25
24
23
22
* Integrated LO Frequency Doubler * Integrated LO Output Buffers * Meets IS136 Specifications
GND
2
20
GND
LNA IN19
3
X2
19
IF A
GND
4
18
IF B
LNA IN8
5
17
GND
GND
6
16
VCC DOUBLER
GAIN SEL
7 8 LNA VCC8 9 LNA OUT 10 GND 11 GND 12 MXR VCC19 13 MXR IN8 14 TX L019
15
VCC TX19
Ordering Information
RF2475 RF2475 PCBA Dual-Band Low Noise Amplifier/Mixer with Frequency Doubler Fully Assembled Evaluation Board Tel (336) 664 1233 Fax (336) 664 0454 http://www.rfmd.com
Functional Block Diagram
RF Micro Devices, Inc. 7628 Thorndike Road Greensboro, NC 27409, USA
Rev A2 010918
8-89
RF2475
Absolute Maximum Ratings Parameter
Supply Voltage Input LO and RF Levels Operating Ambient Temperature Storage Temperature
Preliminary
Rating
-0.5 to +5.0 +6 -30 to +85 -40 to +150
Unit
VDC dBm C C
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).
Parameter
Cellular Receive Path Operational Limits
RF Frequency LO Frequency IF Frequency LNA Input Level LO Input Level Supply Voltage
Specification Min. Typ. Max.
Unit
Condition
869 950 100 -10 2.7 -7 2.8
894 1045 150 +10 -4 3.3
MHz MHz MHz dBm dBm V TAMB =25C, 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 -30C to +85C 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=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 LO Input Level=-7dBm LO Input Level=-7dBm TX LO Buffer ON
Cellular Cascaded Electrical Specifications
Gain 23 14 25 8 17 27 dB dB dB dB dB dB dBm dBm dB dB dB dB dB dB dB dB dB dB k mA dBm dBc dB mA V V A k
8
FRONT-ENDS
Gain Step Gain Variations versus Temperature Noise Figure Input Third Order Intercept1 Return Loss
+1.5 2.2 15 -9 -0.5 2.6 20
-10 -2.0 10 10 10 10 60 60
Isolation
60 50 50 35 >10 20 -7 -22 25 -4 -25 7.5 9.0 0.5 2.0 TBD TBD
IF Output Impedance Supply Current
25
TX LO Buffer
LO Output Buffer Harmonic Output Isolation - LO OUT to LO IN Supply Current
Logic
Input Low Input High Input Current Input Impedance 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
Preliminary
Specification Min. Typ. Max.
RF2475
Unit Condition
Parameter
Cellular Receive Path, Cont'd Cellular Block Level Electrical Specifications Low Noise Amplifier
Frequency Range Gain Gain Step Gain Variations versus Temperature Noise Figure Input Third Order Intercept Terminating Impedance Supply Current Logic Input Low Logic Input High
869 20 3 17
894 6 +1.0 1.4 1.6
14
MHz dB dB dB dB dB dB dBm dBm mA mA V V MHz MHz MHz dB dB dBm
High Gain, Gain Select=High Low Gain, Gain Select=Low -30C to +85C 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
-3 -3
0 0 50 6 6
8 8 0.5
2.0 869 85 950 7 7 894 150 1045 9 12
Mixer and LO Buffer
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
8
FRONT-ENDS
8 11 8 50 10
External Match External Match
>10 14 -7 7.5 -4 19 -4 9.0
k mA dBm mA dBm
Mixer "ON"
-10 -7
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 1930 1015 2030 100 -10 2.7 -7 2.8 1039 2078 1990 1063 2126 150 +10 -4 3.3 MHz MHz MHz MHz dBm dBm V LO input to device at LO IN8. Internal output of LO doubler driving the mixer and TX LO buffer.
Rev A2 010918
8-91
RF2475
Parameter
PCS Receive Path, Cont'd PCS Cascaded Electrical Specifications
Gain Gain Step Gain Variations versus Temperature Noise Figure Input Third Order Intercept Return Loss 24 17 26 6 20 28 dB dB dB dB dB dB dBm dBm dB dB dB dB dB dB dB dB dB dB dBc 33 k mA
Preliminary
Specification Min. Typ. Max. Unit Condition
TAMB =25C, 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 -30C to +85C 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 Mixer "ON" Including the LO doubler, but not the TX LO buffer LO Input Level=-7dBm LO Input Level=-7dBm Fundamental Suppression TX LO Buffer ON Including the LO doubler and the TX LO buffer VCC =2.7V to 2.9V VCC =2.7V to 2.9V
+1.5 2.8 15 -10 -0.5 3.3 20
Isolation
-12 -2 10 10 10 10 40 40 35
37 >53 >40 35 -68 >10 28
8
FRONT-ENDS
Half IF Spur6 IF Output Impedance Supply Current
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 9.0 dBm dBc dBc dB mA
Logic
Input Low Input High Input Current Input Impedance 0.5 2.0 TBD TBD V V A k
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
Preliminary
Specification Min. Typ. Max.
RF2475
Unit Condition
Parameter
PCS Receive Path, Cont'd PCS Block Level Electrical Specifications Low Noise Amplifier
Frequency Range Gain Gain Step Gain Variations versus Temperature Noise Figure Input Third Order Intercept Terminating Impedance Supply Current Logic Input Low Logic Input High
1930 22 2 20
1990
16
+1.0 1.7 -7 -2 -6 0 50 8 8 1.9
MHz dB dB dB dB dB dB dBm dBm mA mA V V MHz MHz MHz MHz dB dB dBm dBm
High Gain, Gain Select=High Low Gain, Gain Select=Low -30C to +85C 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
9 9 0.5
2.0 1930 100 1015 2030 7 1990 150 1063 2126 9 4
Mixer and LO Buffer
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 LO Input Level LO Buffer Supply Current LO Output Level
8
LO input to device at LO IN8. FRONT-ENDS Internal output of LO doubler driving the mixer and TX LO buffer.
1039 2078 8 13 35 8 50 10
7
External Match External Match
>10 23 -10 -7 7.5 -2 28 -4 8.0
k mA dBm mA dBm
Mixer "ON" Including the LO doubler, but not the TX LO buffer Including the LO doubler and the TX LO buffer
-5
Rev A2 010918
8-93
RF2475
Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Pkg Base
Preliminary
Function Description Interface Schematic LNA VCC19 PCS LNA supply voltage. Local bypass capacitor required. Ground connection. Keep traces physically short and connect immediGND LNA IN19 GND LNA IN8 GND GAIN SEL LNA VCC8 LNA OUT GND GND MXR VCC19 MXR IN8 TX LO19 VCC TX19 VCC DOUBLER GND IF B IF A GND LO IN8 VCC TX8 TX LO8 MXR IN19 MXR VCC8 GND GND LNA OUT19 GND
ately to ground plane for best performance. PCS LNA input. AC-coupled. Requires external 50 matching components. Ground connection. Keep traces physically short and connect immediately to ground plane for best performance. Cellular LNA input. AC-coupled. Requires external 50 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 50. 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 50. PCS Transmit LO buffer output. Requires matching to 50. 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 50. Cellular TX LO buffer supply voltage. Local bypass capacitor required. Cellular TX LO buffer output. AC-coupled. Requires matching to 50. PCS RF mixer input. AC-coupled. Requires matching to 50. 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 50. 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.
8
FRONT-ENDS
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
Preliminary
Truth Table of Pin-by-Pin Biasing
Pin # Pin Name Biased by VCC Supply Mode RX-800 RX-1900 TX-800 TX-1900 L= H= 1 LNA VCC19 RX19 VCC 28 LNA OUT19 RX19 VCC 8 LNA VCC8 RX8 VCC 9 LNA OUT8 RX8 VCC 12 MXR VCC19 RX19 VCC 14 TX LO19 TX19 VCC 15 VCC TX19 TX19 VCC 16 DOUBLER VCC PLL VCC 18 IF B IF VCC 19 IF A IF VCC
RF2475
22 VCC TX8 TX8 VCC 23 TX LO8 TX8 VCC 25 MXR VCC8 RX8 VCC
L H L L
L H L L
H L L L
H L L L
L H L L
L L L H
L L L H
H H H H
H H L L
H H L L
L L H L
L L H L
H L L L
Supply Off Supply On
Power Control Modes Mode
RX19
Pin Name
LNA VCC19 MXR VCC19
Pin #
1 12
Controls the Following Circuit Functions
1900MHz LNA Bias Mixer RF Amplifier Mixer LO Driver RX LO Doubler
Doubler VCC IF B IF A RX8 LNA VCC8 MXR VCC8 IF B IF A TX8 TX19 VCC TX8 VCC TX19 Doubler VCC
16 18 19 8 25 18 19 22 15 16
DC Return for the LO Doubler DC Return for Mixer DC Return for Mixer Mixer RF Amplifier Mixer LO Driver DC Return for Mixer DC Return for Mixer 800MHz TX LO Buffer 1900MHz TX LO Buffer TX LO Doubler DC Return for the LO Doubler 800MHz LNA Bias
8
FRONT-ENDS
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
Pin Out
LNA OUT19 MXR VCC8 MXR IN19 VCC TX8 TX LO8
Preliminary
GND
28 LNA VCC19 1
27
26
GND
25
24
23
22 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 8 LNA VCC8 9 LNA OUT 10 GND 11 GND 12 MXR VCC19 13 MXR IN8 14 TX L019
15
VCC TX19
8
FRONT-ENDS
8-96
Rev A2 010918
Preliminary
Evaluation Board Schematic
(Download Bill of Materials from www.rfmd.com.)
P1 P1-1 1 2 3 P1-4 4 CON4 VCC GND GND VCC P2-2 P2-3 P2 1 2 3 CON3 GND GAIN SEL 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.
RF2475
FL2* J1 LNA2 OUT 50 strip C1 1 nF
FAR-F6CE1G9600-L2XB 2 1 4
VCC MX1
GND GND
GND GND
IN
OUT
5
C21* DNI
R3* DNI
R2 0 C4 0.5 pF C5 3 pF R5 300 L3 7.5 nH C6 4 pF
3
6
50 strip
J2 MX2 IN J10 LO1 OUT
L14 10 nH VCC LNA2 L1 8.2 nH R1 0 C2 3 pF 28 1 C23 10 pF 2 J9 LNA2 IN 50 strip L12 3.9 nH 50 strip 5 L12 3.9 nH C38 33 nF 6 C38 4 pF L13 56 nH C37 33 nF 3 27 26 25 24
50 strip
L2 18 nH
VCC LO1 C7 100 pF 50 strip 21 L4 4.7 nH 20 C36 3 pF J3 LO1 IN
23
22
X2
19 C8* DNI L5 56 nH C11 8 pF L6 56 nH C9 3 pF L7 150 nH 17 C24* DNI C22 1 nF R6* DNI C12 10 pF
Part of Test Board
VCC IF C10 1 nF 50 strip
4
18
8
J4 IF OUT VCC DBLR
J8 LNA1 IN
16
TRL1
7 8 9 10 11 C18 3 pF 12 13 14
15 + C14 100 pF R7 510 L8 1.8 nH
C13 3 pF VCC LO2 C15 1.5 pF R4 0 C16 1.5 pF 50 strip
GAIN SEL VCC LNA1 C20 100 pF C19 1.2 pF L11 12 nH
J5 LO2 OUT
3
6
GND GND
GND GND
R11* DNI 2 R10 0
IN
OUT
5
R9* DNI FL1* R8 0
L15 2.7 nH C17 3 pF L9 39 nH
2475400, Rev. -
J7 LNA1 OUT J6 MX1 IN
50 strip 50 strip
FAR-F5CE881M50-K210
1
4
VCC MX2
Part of Test Board
JP1 1 3 5 7 9 11 13 15 17 2 4 6 8 10 12 14 16 18 HEADER 9X2 C28 1 nF C29 1 nF C30 1 nF C35 1 nF C34 1 nF C31 1 nF C32 1 nF C33 1 nF Gain VCC LNA2 VCC MX2 VCC LO2 VCC DBLR VCC IF VCC MX1 VCC LO1 VCC LNA1 C27 1 nF
VCC
C25 + 1 uF
C26 1 nF
Rev A2 010918
8-97
FRONT-ENDS
RF2475
Evaluation Board Layout Board Size 2.6" x 2.0"
Board Thickness 0.058", Board Material FR-4, Multi-Layer
Assembly Top
Preliminary
8
FRONT-ENDS
8-98
Rev A2 010918
Preliminary
Inner 1 Inner 2
RF2475
Back
8
FRONT-ENDS
Rev A2 010918
8-99
RF2475
LNA1 Gain versus Frequency
21.0
Preliminary
LNA1 Gain versus Supply Voltage
Gain Select=High, 882 MHz
21.0
Gain Select=High, VCC=2.8 V
20.0
20.0
Gain (dB)
18.0
Gain (dB)
+25C Gain -40C Gain +85C Gain
19.0
19.0
18.0
17.0
17.0
+25C Gain -40C Gain +85C Gain
16.0 865.0
16.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4
Frequency (MHz)
Supply Voltage (V)
LNA1 Noise Figure versus Frequency
2.5
LNA1 Noise Figure versus Supply Voltage
Gain Select=High, 882 MHz
2.5
Gain Select=High, VCC=2.8 V
8
Noise Figure (dB)
2.0
2.0
FRONT-ENDS
1.5
Noise Figure (dB)
870.0 875.0 880.0 885.0 890.0 895.0 900.0
1.5
1.0
1.0
0.5
0.5
0.0 865.0
0.0 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4
Frequency (MHz)
Supply Voltage (V)
LNA1 Input IP3 versus Frequency
0.0
LNA1 Input IP3 versus Supply Voltage
Gain Select=High, 882/883 MHz, -40dBm per tone
2.0
Gain Select=High, -40 dBm per tone, 1 MHz Separation, VCC=2.8 V
-1.0
1.0
IIP3 (dBm)
-3.0
IIP3 (dBm)
-2.0
0.0
-1.0
-4.0
+25C IIP3 -40C IIP3 +85C IIP3
+25C IIP3 -2.0 -40C IIP3 +85C IIP3
-5.0 865.0
-3.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4
Frequency (MHz)
Supply Voltage (V)
8-100
Rev A2 010918
Preliminary
Mixer1 Gain versus Frequency
10.0
RF2475
Mixer1 Gain versus Supply Voltage
10.0
RX Mode, VCC=2.8 V, LO PIN=-7 dBm
RX Mode, 882 MHz, LO PIN=-7 dBm
9.0 9.0
8.0
Gain (dB)
7.0
Gain (dB)
8.0
7.0 6.0 +25C Gain -40C Gain +85C Gain
5.0
+25C Gain -40C Gain +85C Gain
6.0
4.0 865.0
5.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4
Frequency (MHz)
Supply Voltage (V)
Mixer1 SSB Noise Figure versus Frequency
13.0
Mixer1 SSB Noise Figure versus Supply Voltage
13.0
RX Mode, VCC=2.8 V, LO PIN=-7 dBm
RX Mode, 882 MHz, LO PIN=-7 dBm
12.0
12.0
8
FRONT-ENDS
2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4
SSB Noise Figure (dB)
11.0
SSB Noise Figure (dB)
870.0 875.0 880.0 885.0 890.0 895.0 900.0
11.0
10.0
10.0
9.0
9.0
8.0 865.0
8.0
Frequency (MHz)
Supply Voltage (V)
Mixer1 Input IP3 versus Frequency
RX Mode, -30 dBm per tone, 1 MHz Separation, VCC=2.8 V, LO PIN=-7 dBm 10.0 11.0
Mixer1 Input IP3 versus Supply Voltage
RX Mode, 882/883 MHz, -30dBm per tone, LO PIN=-7 dBm
9.0 10.0
8.0
IIP3 (dBm)
7.0
IIP3 (dBm)
9.0
8.0
6.0 +25C IIP3 -40C IIP3 +85C IIP3
5.0
+25C IIP3 -40C IIP3 +85C IIP3
7.0
4.0 865.0
6.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4
Frequency (MHz)
Supply Voltage (V)
Rev A2 010918
8-101
RF2475
LNA2 Gain versus Frequency
24.0
Preliminary
LNA2 Gain versus Supply Voltage
Gain Select=High, 1960 MHz
24.0
Gain Select=High, VCC=2.8 V
23.0
23.0
Gain (dB)
21.0
Gain (dB)
22.0
22.0
21.0
20.0
+25C Gain -40C Gain +85C Gain
+25C Gain 20.0 -40C Gain +85C Gain
19.0 1920.0
19.0 1930.0 1940.0 1950.0 1960.0 1970.0 1980.0 1990.0 2000.0 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4
Frequency (MHz)
Supply Voltage (V)
LNA2 Noise Figure versus Frequency
2.5
LNA2 Noise Figure versus Supply Voltage
Gain Select=High, 1960 MHz
2.5
Gain Select=High, VCC=2.8 V
8
Noise Figure (dB)
2.0
2.0
FRONT-ENDS
1.5
Noise Figure (dB)
1930.0 1940.0 1950.0 1960.0 1970.0 1980.0 1990.0 2000.0
1.5
1.0
1.0
0.5
0.5
0.0 1920.0
0.0 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4
Frequency (MHz)
Supply Voltage (V)
LNA2 Input IP3 versus Frequency
-3.0
LNA2 Input IP3 versus Supply Voltage
Gain Select=High, 1960/1961 MHz, -40 dBm per tone
-5.0
Gain Select=High, -40 dBm per tone, 1 MHz Separation, VCC=2.8 V
-4.0
-6.0
IIP3 (dBm)
-6.0
IIP3 (dBm)
+25C IIP3 -40C IIP3 +85C IIP3
-5.0
-7.0
-8.0
-7.0
-9.0
+25C IIP3 -40C IIP3 +85C IIP3
-8.0 1920.0
-10.0 1930.0 1940.0 1950.0 1960.0 1970.0 1980.0 1990.0 2000.0 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4
Frequency (MHz)
Supply Voltage (V)
8-102
Rev A2 010918
Preliminary
Mixer2 Gain versus Frequency
10.0
RF2475
Mixer2 Gain versus Supply Voltage
9.0
RX Mode, VCC=2.8 V, LO PIN=-7 dBm
RX Mode, 1960 MHz, LO PIN=-7 dBm
9.0 8.0
8.0
Gain (dB)
7.0
Gain (dB)
7.0
6.0 6.0 +25C Gain -40C Gain +85C Gain
5.0
+25C Gain -40C Gain +85C Gain
5.0
4.0 1920.0
4.0 1930.0 1940.0 1950.0 1960.0 1970.0 1980.0 1990.0 2000.0 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4
Frequency (MHz)
Supply Voltage (V)
Mixer2 SSB Noise Figure versus Frequency
16.0
Mixer2 SSB Noise Figure versus Supply Voltage
16.0
RX Mode, VCC=2.8 V, LO PIN=-7 dBm
RX Mode, 1960 MHz, LO PIN=-7 dBm
15.0
15.0
SSB Noise Figure (dB)
SSB Noise Figure (dB)
14.0
14.0
8
FRONT-ENDS
2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4
13.0
13.0
12.0
12.0
11.0
11.0
10.0
10.0
9.0 1920.0
9.0 1930.0 1940.0 1950.0 1960.0 1970.0 1980.0 1990.0 2000.0
Frequency (MHz)
Supply Voltage (V)
Mixer2 Input IP3 versus Frequency
RX Mode, -30 dBm per tone, 1 MHz Separation, VCC=2.8 V, LO PIN=-7 dBm 10.0 12.0
Mixer2 Input IP3 versus Supply Voltage
RX Mode, 1960/1961 MHz, -30 dBm per tone, LO PIN=-7 dBm
9.0
11.0
8.0
10.0
IIP3 (dBm)
7.0
IIP3 (dBm)
+25C IIP3 -40C IIP3 +85C IIP3
9.0
6.0
8.0 +25C IIP3 7.0 -40C IIP3 +85C IIP3
5.0
4.0 1920.0
6.0 1930.0 1940.0 1950.0 1960.0 1970.0 1980.0 1990.0 2000.0 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4
Frequency (MHz)
Supply Voltage (V)
Rev A2 010918
8-103
RF2475
Mixer1 versus LO Amplitude
10.0
Preliminary
Mixer2 versus LO Amplitude
15 10.0
RX Mode, 882 MHz, VCC=2.8 V
RX Mode, 1960 MHz, VCC=2.8 V
17
9.0
14
9.0
Gain (dB) IIP3 (dBm) SSB NF (dB)
16
SSB Noise Figure (dB)
8.0
13
8.0
15
7.0
12
7.0
14
6.0 Gain (dB) 5.0 IIP3 (dBm) SSB NF (dB)
11
6.0
13
10
5.0
12
4.0 -11.0
-10.0
-9.0
-8.0
-7.0
-6.0
-5.0
-4.0
9 -3.0
4.0 -11.0
-10.0
-9.0
-8.0
-7.0
-6.0
-5.0
-4.0
11 -3.0
LO Amplitude (dBm)
LO Amplitude (dBm)
LNA1 + Mixer1 Gain versus Frequency
30.0
LNA1+Mixer1 Gain versus Supply Voltage
30.0
RX Mode, Gain Select= High, VCC=2.8 V, LO PIN=-7 dBm
RX Mode, Gain Select=High, 882 MHz, LO PIN=-7 dBm
8
Gain (dB)
28.0
28.0
FRONT-ENDS
24.0
Gain (dB)
26.0
26.0
24.0
22.0
+25C Gain -40C Gain +85C Gain
22.0
+25C Gain -40C Gain +85C Gain
20.0 865.0
20.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4
Frequency (MHz)
Supply Voltage (V)
LNA1 + Mixer1 Input IP3 versus Frequency
RX Mode, Gain Select=High, 882/883 MHz, -40 dBm per tone, VCC=2.8 V, LO PIN=-7 -7.0 dBm
LNA1 + Mixer1 SSB Noise Figure versus Frequency
3.0
RX Mode, Gain Select=High, VCC=2.8 V, LO PIN=-7 dBm
-8.0
2.5
SSB Noise Figure (dB)
-9.0
2.0
IIP3 (dBm)
-10.0
1.5
-11.0
1.0
-12.0 +25C IIP3 -40C IIP3 +85C IIP3
-13.0
0.5
-14.0 865.0
870.0
875.0
880.0
885.0
890.0
895.0
900.0
0.0 865.0
870.0
875.0
880.0
885.0
890.0
895.0
900.0
Frequency (MHz)
Frequency (MHz)
8-104
Rev A2 010918
SSB Noise Figure (dB)
Gain (dB), IIP3 (dBm)
Gain (dB), IIP3 (dBm)
Preliminary
LNA1 + Mixer1 SSB Noise Figure versus Supply Voltage
3.0
RF2475
LNA1+Mixer1 Input IP3 versus Supply Voltage
RX Mode, Gain Select=High, 882/883 MHz, -40 dBm per tone, LO PIN=-7 dBm -5.0
RX Mode, Gain Select=High, VCC=2.8 V, LO PIN=-7 dBm
2.5
-6.0
SSB Noise Figure (dB)
-7.0 2.0
IIP3 (dBm)
-8.0
1.5
-9.0
1.0 -10.0 +25C IIP3 -40C IIP3 +85C IIP3
0.5
-11.0
0.0 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4
-12.0 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4
Supply Voltage (V)
Supply Voltage (V)
LNA2 + Mixer2 Gain versus Frequency
30.0
LNA2+Mixer2 Gain versus Supply Voltage
30.0
RX Mode, Gain Select=High, VCC=2.8 V, LO PIN=-7 dBm
RX Mode, Gain Select=High, 1960 MHz, LO PIN=-7 dBm
28.0
28.0
8
FRONT-ENDS
3.4 2000.0
Gain (dB)
24.0
Gain (dB)
+25C Gain -40C Gain +85C Gain
26.0
26.0
24.0
22.0
22.0
+25C Gain -40C Gain +85C Gain
20.0 1920.0
20.0 1930.0 1940.0 1950.0 1960.0 1970.0 1980.0 1990.0 2000.0 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3
Frequency (MHz)
Supply Voltage (V)
LNA2 + Mixer2 Input IP3 versus Frequency
RX Mode, Gain Select=High, 1960/1961 MHz, -40 dBm per tone, VCC=2.8 V, LO PIN=-7 dBm
LNA2 + Mixer2 SSB Noise Figure versus Frequency
4.0
-9.0
RX Mode, Gain Select=High, VCC=2.8 V, LO PIN=-7 dBm
-10.0 3.0
-12.0
SSB Noise Figure (dB)
+25C IIP3 -40C IIP3 +85C IIP3 1930.0 1940.0 1950.0 1960.0 1970.0 1980.0 1990.0 2000.0
-11.0
IIP3 (dBm)
2.0
-13.0
-14.0
1.0 -15.0
-16.0 1920.0
0.0 1920.0
1930.0
1940.0
1950.0
1960.0
1970.0
1980.0
1990.0
Frequency (MHz)
Frequency (MHz)
Rev A2 010918
8-105
RF2475
LNA2 + Mixer2 SSB Noise Figure versus Supply Voltage
4.0
Preliminary
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
-10.0
-11.0 3.0
SSB Noise Figure (dB)
2.0
IIP3 (dBm)
-12.0
-13.0
1.0 -14.0
+25C IIP3 -40C IIP3 +85C IIP3
0.0 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4
-15.0 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4
Supply Voltage (V)
Supply Voltage (V)
LNA1+Mixer1 Current versus Supply Voltage
35.0
LNA2+Mixer2 Current versus Supply Voltage
45.0
RX Mode, Gain Select=High, 882 MHz, LO PIN=-7 dBm
RX Mode, Gain Select=High, 1960 MHz, LO PIN=-7 dBm
8
Current (mA)
40.0 30.0
Current (mA)
+25C Current -40C Current +85C Current
FRONT-ENDS
35.0
25.0
30.0
20.0
25.0
+25C Current -40C Current +85C Current
15.0 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4
20.0 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4
Supply Voltage (V)
Supply Voltage (V)
LNA1 + Mixer1 versus LO Amplitude
30.0
LNA2 + Mixer2 versus LO Amplitude
-8.0 30.0
RX Mode, Gain Select=High, 882 MHz, VCC=2.8 V
RX Mode, Gain Select=High, 1960 MHz, VCC=2.8 V
-11.0
28.0
-9.0
28.0
-12.0
IIP3 (dBm)
24.0
-11.0
24.0
-14.0
Gain (dB) 22.0 IIP3 (dBm) -12.0 22.0
Gain (dB) -15.0 IIP3 (dBm)
20.0 -11.0
-10.0
-9.0
-8.0
-7.0
-6.0
-5.0
-4.0
-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)
LO Amplitude (dBm)
8-106
Rev A2 010918
IIP3 (dBm)
Gain (dB)
Gain (dB)
26.0
-10.0
26.0
-13.0
Preliminary
LO Isolation
Low Band Cascaded Configuration, Supply Voltage=2.8 V
0.0 0.0 -10.0 -20.0 -30.0
RF2475
LO Isolation
High Band Cascaded Configuration, Supply Voltage=2.8 V
LO1-IFout LO1-LNA2in
-20.0
LO1-IFout LO1-LNA1in
-40.0
Isolation (dB)
Isolation (dB)
600.0 700.0 800.0 900.0 1000.0 1100.0 1200.0 1300.0
-40.0 -50.0 -60.0 -70.0
-60.0
-80.0
-100.0 -80.0 -120.0 500.0 -90.0 700.0
800.0
900.0
1000.0
1100.0
1200.0
1300.0
Frequency (MHz)
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 -30.0
8
FRONT-ENDS
1700.0 1900.0 2100.0 2300.0 2500.0
Isolation (dB)
-40.0 -50.0 -60.0 -70.0 -80.0 -90.0 -100.0 1500.0
Frequency (MHz)
Rev A2 010918
8-107
RF2475
Preliminary
8
FRONT-ENDS
8-108
Rev A2 010918

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