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AD6122ARSRL

CDMA 3 V Transmitter IF Subsystem with Integrated Voltage Regulator

Analog Devices 

AD6122

RF SOURCE

VREG OUT

PULL-UP INDUCTORS CHOSEN

FOR PEAK RESPONSE AT THE

TEST FREQUENCY.

0.1␮F

1:8

383⍀

IFINP

TXOPP

453⍀

4:1

511⍀ 10nF

383⍀ 10nF

IFINN

TXOPN

AD6122

10nF 205⍀

10nF 453⍀

TO

SPECTRUM

ANALYZER

0.1␮F

VREG OUT

Figure 2. IF Amplifier’s Characterization Input and Output Impedance Matches

NOTE: RF CABLES FOR I AND Q PATHS MUST BE OF EQUAL LENGTH

TEKTRONIX

AFG2002

I DATA

500mVp-p DIFFERENTIAL

Q DATA

R&S

SMT03

RF

RF SOURCE 1

TEST BED MOTHERBOARD

I CHANNEL

Q CHANNEL

MOD OUT

LO INPUT

IFTX OUT

IF IN

R&S FSEA20/30

SPECTRUM

RF ANALYZER

INPUT

AUX MEAS

PORT

R&S

SMT03

RF

RF SOURCE 2

TO RF SWITCHES

HPE3610

POWER SUPPLY

HP34970A

DATA ACQUISITION

& SWITCH CONTROL

DC MEASUREMENTS

& CONTROL BITS

Figure 3. General Test Set

–6–

REV. B

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