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RF2948B
Rev A6 040930
RX Gain versus IF LO Amplitude and Temp (VCC=3V; RX
VGC=1.6V; RX IF IN=375MHz, I and Q OUT~650mVP-P; IF LO=748MHz)
36.5
37.0
37.5
38.0
38.5
39.0
39.5
40.0
40.5
41.0
41.5
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
5.0
LO Ampl. (dBm)
Gain, 25°C
Gain, 85°C
Gain, -40°C
RX IQ Amplitude and Phase Error versus IF LO Amplitude and Temp
(VCC=3V; RX VGC=1.6V; RX IF IN=375MHz, I&Q OUT~650mVP-P; IF LO=748MHz)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
5.0
LO Amplitude (dBm)
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Ampl. Err, 25°C
Ampl. Err, 85°C
Ampl. Err, -40°C
Phase Err, 25°C
Phase Err, 85°C
Phase Err, -40°C
RX OP1dB versus VGC and Temp (VCC = 3 V; RX IFIN = 375
MHz; IF LO = 748 MHz at -10 dBm)
600.0
650.0
700.0
750.0
800.0
850.0
900.0
950.0
1000.0
1050.0
1100.0
1150.0
1200.0
1250.0
1300.0
1350.0
1400.0
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
RX VGC (VDC)
RX Voltage Gain versus VGC and VCC (Temp=25
oC; RX IF
IN=375MHz; I and Q out ∼ 300mVP-P IF LO=748MHz @ -10dBm)
-5.00
0.00
5.00
10.00
15.00
20.00
25.00
30.00
35.00
40.00
45.00
50.00
55.00
60.00
65.00
70.00
75.00
1.20
1.30
1.40
1.50
1.60
1.70
1.80
1.90
2.00
RX VGC (VDC)
Gain, 2.7V
Gain, 3V
Gain, 3.3V
RX 3dB BW versus RBW (Temp=Ambient, VCC=3.15V, VGC=1.6V,
RX IFIN =-67dBm, IF LO=560MHz@-10dBm)
0.0
5.0
10.0
15.0
20.0
25.0
30.0
1.0
10.0
100.0
1000.0
RBW [kΩ]
TX 3dB BW Point versus RBW (Broadband 50Ω match on IFOUT, Temp=Ambient,
VCC=3.15V, GCTX=1.5V, I&Qin=100mVP-P, IFLO=560MHz@-10dBm)
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
1.0
10.0
100.0
1000.0
RBW [kΩ]
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