TEST CIRCUITS(continued)
EXT TRIGGER
P2
P1
S1A
RL = 150Ω
BIAS
VCC
DUT
Network Analyzer
(HP8753ES)
VBIAS
DA
IN
EN
VIN
VEN
Figure3. Test Circuit for Frequency Response (BW)
Frequency response is 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. All unused analog I/O ports are left open.
HP8753ES Setup
Average = 4
RBW = 3 Hz
VBIAS = 0.35 V
ST = 2 s
P1 = 0 dBM
8
SGM330A