TEST CIRCUITS(continued)
EXT TRIGGER
P2
P1
S1A
RL = 150Ω
VBIAS
BIAS
VCC
DUT
Sawtooth
Waveform Generator
Network Analyzer
(HP8753ES)
DA
IN
EN
VEN
VIN
Figure 2. Test Circuit for Differential Gain/Phase Measurement
Differential gain and phase are measured at the output of the ON channel. For example, when VIN = 0, VEN = 0,
and DA is the input, the output is measured at S1A.
HP8753ES Setup
Average = 20
RBW = 300 Hz
ST = 1.381 s
P1 = –7 dBM
CW frequency = 3.58 MHz
Sawtooth Waveform Generator Setup
VBIAS = 0 to 1 V
Frequency = 0.905 Hz
7
SGM330A