SN761640 Datasheet, PDF (20/30 Pages) Texas Instruments – DIGITAL TV TUNER IC

SN761640
SLES237 – OCTOBER 2008 .............................................................................................................................................................................................. www.ti.com
SG
50 W
V_IN
50 W
DUT
IFGCAIN1
IFGCAOUT1
IFGCAIN2
IFGCAOUT2
IFGCACTRAL
DC Power
Source
V_OUT Diff ^{200 W}
V_OUT
250 W
Spectrum
Analyzer
50 W
Gv = 20log(V_OUT Diff/V_IN)
= 20log(V_OUT/V_IN) + 6 + 14
Figure 30. IF GCA Gain Measurement Circuit
NF
Meter
Noise
Source
DUT
Figure 31. Noise-Figure Measurement Circuit
Signal
Generator
Signal
Generator
f_des: P = 70 dBmV
Mix
Pad
f_des ±6 MHz
AM 30%, 1 kHz
DUT
Modulation
Analyzer
Figure 32. 1% Cross-Modulation Distortion Measurement Circuit
20
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