REV. A

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a

AD9732

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

World Wide Web Site: http://www.analog.com

Fax: 781/326-8703

© Analog Devices, Inc., 1999

10-Bit, 200 MSPS

D/A Converter

FUNCTIONAL BLOCK DIAGRAM

CONTROL

AMP

INTERNAL

VOLTAGE

REFERENCE

AD9732

D1

D2

D3

D4

D5

D6

D7

D8

D9

D10

CLOCK

DIGITAL

CONTROL

AMP IN

CONTROL

AMP OUT

ANALOG

RETURN

TTL

DRIVE

LOGIC

FEATURES

200 MSPS Throughput Rate

3.3 V PECL Digital Input

Low Power: 305 mW

Fast Settling: 5 ns to 1/2 LSB

Low Glitch Energy: 6 pVs

Internal Reference

28-Lead SSOP Packaging

APPLICATIONS

Digital Communications

Direct Digital Synthesis

Waveform Reconstruction

High Speed Imaging

GENERAL DESCRIPTION

The AD9732 is a 10-bit, 200 MSPS, bipolar D/A converter that

is optimized to provide high dynamic performance, yet offers

lower power dissipation and a more economical price than pre-

vious high speed DAC solutions. The AD9732 was primarily

designed for demanding communications systems applications

where maximum spurious-free dynamic range (SFDR) is required

at high throughput rates. The proliferation of digital communi-

cations into base station and high volume subscriber-end mar-

kets has created a demand for high performance bipolar DACs

delivered at CMOS associated levels of power dissipation and

cost. The AD9732 is the answer to that demand.

Optimized for direct digital synthesis (DDS) and digital modu-

lator waveform reconstruction, the AD9732 provides >50 dB of

wideband harmonic suppression over the dc to 80 MHz analog

output bandwidth. This signal bandwidth addresses the transmit

spectrum in many of the emerging digital communications ap-

plications where signal purity is critical. Narrowband (

±1 MHz

window), the AD9732 provides an SFDR of greater than 75 dB.

This level of wideband and narrowband ac performance, coupled

with its 200 MSPS throughput rate, enables the AD9732 to

present outstanding value in the high speed DAC function.

The AD9732 is packaged in a 28-lead SSOP and is specified to

operate over the extended industrial temperature range of –40

°C

to +85

°C. Digital inputs and clock are positive-ECL compatible.