AD8349-EVAL Analog Devices Inc, AD8349-EVAL Datasheet - Page 26

• Manufacturer Part Number: AD8349-EVAL
• Manufacturer: Analog Devices Inc

Specifications of AD8349-EVAL

• Lead Free Status / Rohs Status: Not Compliant

AD8349
CHARACTERIZATION SETUPS
SSB SETUP
The primary setup used to characterize the AD8349 is shown in
Figure 69. This setup was used to evaluate the product as a
single-sideband modulator. The interface board has circuitry
that converts the single-ended I and Q inputs from the arbitrary
function generator to differential inputs with a dc bias of
400 mV. Additionally, the interface board provides connections
for power supply routing. The HP34970A and its associated
plug-in 34901 were used to monitor power supply currents and
voltages being supplied to the AD8349 characterization board.
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HP3631
AGILENT
E4437B
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–25V MAX
+15V MAX
+25V MAX
RFOUT
PC CONTROLLER
Figure 69. Characterization Board SSB Test Setup
COM
IN
LO
ENOP
CHARACTERIZATION
Rev. A | Page 26 of 28
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VPS1
VN
GND
VP
34901
IP
D1
D1
AD8349
BOARD
P1
P1
INTERFACE
HP34970A
BOARD
IN
34907
D2
D2
QP
IP
VOUT
QN
QP QN
Two HP34907 plug-ins were used to provide additional
miscellaneous dc and control signals to the interface board. The
LO input was driven directly by an RF signal generator and the
output was measured directly with a spectrum analyzer. With
the I channel driven by a sine wave and the Q channel by a
cosine wave, the lower sideband is the single sideband (SSB)
output. The typical SSB output spectrum is shown in Figure 53.
34907
D3
D3
Q_IN
I_IN
RF I/P
OUTPUT_1
OUTPUT_2
ARB FUNCTION GEN
SPECTRUM
ANALYZER
TEKAFG2020
HP8561E
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