1500 MHz to 2500 MHz

Quadrature Modulator

ADL5372

Rev. 0

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FEATURES

Output frequency range: 1500 MHz to 2500 MHz

Modulation bandwidth: >500 MHz (3 dB)

1 dB output compression: 14 dBm @ 1900 MHz

Noise floor: −158 dBm/Hz

Sideband suppression: −45 dBc @ 1900 MHz

Carrier feedthrough: −45 dBm @ 1900 MHz

Single supply: 4.75 V to 5.25 V

24-lead LFCSP_VQ

APPLICATIONS

Cellular communication systems

CDMA2000/GSM/WCDMA

WiMAX/broadband wireless access systems

Satellite modems

FUNCTIONAL BLOCK DIAGRAM

IBBP

IBBN

VOUT

LOIP

LOIN

QBBN

QBBP

QUADRATURE

PHASE

SPLITTER

Figure 1.

GENERAL DESCRIPTION

The ADL5372 is a member of the fixed-gain quadrature modulator

(F-MOD) family designed for use from 1500 MHz to 2500 MHz.

Its excellent phase accuracy and amplitude balance enable high

performance intermediate frequency or direct radio frequency

modulation for communication systems.

The ADL5372 provides a >500 MHz, 3 dB baseband bandwidth,

making it ideally suited for use in broadband zero IF or low

IF-to-RF applications and in broadband digital predistortion

transmitters.

The ADL5372 accepts two differential baseband inputs and a

single-ended, local oscillator (LO) and generates a single-

ended output.

The ADL5372 is fabricated using the Analog Devices, Inc.

advanced silicon-germanium bipolar process. It is available in

a 24-lead, exposed-paddle, Pb-free, LFCSP. Performance is

specified over a −40°C to +85°C temperature range. A Pb-free

evaluation board is available.