ADL5372ACPZ-R7 datasheet(19/24 Pages) AD

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ADL5372

Rev. 0 | Page 19 of 24

CHARACTERIZATION SETUP

FMOD TEST SETUP

OUT

GND

VPOS

FMOD

I OUT

Q OUT

VPOS +5V

OUTPUT

90°

0°

R AND S SPECTRUM ANALYZER

FSU 20Hz TO 8GHz

I/AM

Q/FM

AGILENT 34401A

MULTIMETER

0.175 ADC

AGILENT E3631A

POWER SUPPLY

5.000

0.175A

COM

±25V

–

+ –

AEROFLEX

IFR 3416

250kHz TO 6GHz SIGNAL GENERATOR

OUT

FREQ 4MHz

LEVEL 0dBm

BIAS 0.5V

GAIN 0.7V

CONNECT TO BACK OF UNIT

+6dBm

Figure 41. Characterization Bench Setup

The primary setup used to characterize the ADL5372 is shown

in Figure 41. This setup was used to evaluate the product as a

single-sideband modulator. The Aeroflex signal generator supplied

the LO and differential I and Q baseband signals to the device

under test, DUT. The typical LO drive was 0 dBm. The I-channel is

driven by a sine wave, and the Q-channel is driven by a cosine

wave. The lower sideband is the single sideband (SSB) output.

The majority of characterization for the ADL5372 was performed

using a 1 MHz sine wave signal with a 500 mV common-mode

voltage applied to the baseband signals of the DUT. The baseband

signal path was calibrated to ensure that the VIOS and VQOS

offsets on the baseband inputs were minimized, as close as

possible, to 0 V before connecting to the DUT. See the Carrier

Feedthrough Nulling section for the definitions of VIOS and VQOS.

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