ADRF6720ACPZ-R7 datasheet(29/44 Pages) AD

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Data Sheet

ADRF6720

CHARACTERIZATION SETUPS

The primary setup used to characterize the ADRF6720 is shown

in Figure 57. This setup was used to evaluate the product as a

single-sideband modulator. An automated software program

(VEE) was used to control equipment over the IEEE bus. The

setup was used to measure SSB, OIP2, OIP3, output P1 dB

(OP1dB), LO, and USB null.

For phase noise and reference spur measurements, see the phase

noise setup shown in Figure 58. Phase noise was measured on

an LO and modulator output.

Figure 57. General Characterization Setup

AEROFLEX IFR 3416 FREQUENCY GENERATOR

(WITH BASEBAND OUTPUTS AT 1MHz)

34980A

WITH 34950 AND (×3) 34921 MODULES

Rohde & Schwarz SMT 06 SIGNAL GENERATOR

(REFIN)

SPECTRUM ANALYZER

ADRF6720 TEST RACK ASSEMBLY (INTERNAL VCO CONFIGURATION)

ALL INSTRUMENTS ARE CONNECTED IN DAISY-CHAIN

FASHION VIA GBIP CABLE UNLESS OTHERWISE NOTED.

+3.3V FOR

VPOS TO 34950

MODULE

BASEBAND INPUTS AT 1MHz

12-PIN

CONNECTOR

(REGISTER

PROGRAMMING)

20-PIN CONNECTOR

DC HEADER

RFOUT

REFIN

E3631A POWER SUPPLY

(+6V ADJUSTED TO 5V)

PROGRAMMING

AND DC CABLE

(×4 FOR MULTISITE)

OUTPUT (REF)

INPUT

(RFOUT)

34401A DMM (FOR SUPPLY

CURRENT MEASUREMENT)

BASEB AND OUTPUTS

(I–, I+, Q–, Q+)

6dB

ADRF6720

EVALUATION BOARD

AGILENT MXA N9020A

PC CONTROL

CONNECTED TO SYSTEM VIA USB TO GPIB ADAPTER

KEITHLEY S46 SWITCH SYSTEM

(FOR RFOUT AND REFIN ON 4 SITES)

KEITHLEY S46 SWITCH SYSTEM

(FOR BASEBAND INPUTS ON 4 SITES)

Rev. 0 | Page 29 of 44

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