ADL5370ACPZ-R2 datasheet(17/20 Pages) AD

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ADL5370

Rev. 0 | Page 17 of 20

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 38. Characterization Bench Setup

The primary setup used to characterize the ADL5370 is shown

in Figure 38. This setup was used to evaluate the product as a

single-sideband modulator. The Aeroflex signal generator supplied

the local oscillator (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 ADL5370 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 VIOS1 and VQOS

offsets on the baseband inputs were minimized, as close as

possible, to 0 V before connecting to the DUT.

1 See the

Carrier Feedthrough Nulling section for the definitions of VIOS

and VQOS.

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