In operation (Figure 15), the AD61009 evaluation board draws
about 8.5 mA at midgain (59 dB). Use high impedance probes
to monitor signals from the demodulated I and Q outputs and
the IF output. The MGC voltage should be set such that the
signal level at DMIP does not exceed ± 150 mV; signal levels
AD61009
above this will overload the I and Q demodulators. The inser-
tion loss between IFOP and DMIP is typically 3 dB if a simple
low-pass filter (R8 and C2) is used and higher if a reverse-
terminated bandpass filter is used.
HP 6632A
PROGRAMMABLE
POWER SUPPLY
2.7V–6V
HP 3326
SYNTHESIZED
SIGNAL GENERATOR
10.710MHz
FLUKE 6082A
SYNTHESIZED
SIGNAL GENERATOR
240MHz
MCL
ZFSC–2–1
COMBINER
HP 8656A
SYNTHESIZED
SIGNAL GENERATOR
240.02MHz
VPOS FDIN
I OUTPUT
RF
AD607
EVALUATION
BOARD
Q OUTPUT
LO
MGC
TEKTRONIX
11402A
OSCILLOSCOPE
WITH 11A32
PLUGIN
HP 9920
IEEE CONTROLLER
HP9121
DISK DRIVE
HP 8656A
SYNTHESIZED
SIGNAL GENERATOR
229.3MHz
DATA PRECISION
DVC8200
PROGRAMMABLE
VOLTAGE SOURCE
IEEE–488 BUS
Figure 15. Evaluation Board Test Setup
REV. 0
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