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PCM1702

BiCMOS Advanced Sign Magnitude 20-Bit

DIGITAL-TO-ANALOG CONVERTER

DESCRIPTION

FEATURES

q ULTRA LOW –96dB max THD+N

(No External Adjustment Required)

q NEAR-IDEAL LOW LEVEL OPERATION

q GLITCH-FREE OUTPUT

q 120dB SNR TYP (A-Weight Method)

q INDUSTRY STD SERIAL INPUT FORMAT

q FAST (200ns) CURRENT OUTPUT

(

q CAPABLE OF 16X OVERSAMPLING

q COMPLETE WITH REFERENCE

q LOW POWER (150mW typ)

49%

FPO

The PCM1702 is a precision 20-bit digital-to-analog

converter with ultra-low distortion (–96dB typ with a

full scale output). Incorporated into the PCM1702 is

an advanced sign magnitude architecture that elimi-

nates unwanted glitches and other nonlinearities around

bipolar zero. The PCM1702 also features a very low

noise (120dB typ SNR: A-weighted method) and fast

settling current output (200ns typ, 1.2mA step) which

is capable of 16X oversampling rates.

Applications include very low distortion frequency

synthesis and high-end consumer and professional

digital audio applications.

International Airport Industrial Park

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Mailing Address: PO Box 11400

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Tucson, AZ 85734

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Street Address: 6730 S. Tucson Blvd.

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Tucson, AZ 85706

Tel: (520) 746-1111

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Twx: 910-952-1111

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Cable: BBRCORP

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Telex: 066-6491

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FAX: (520) 889-1510

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Immediate Product Info: (800) 548-6132

Reference

and

Servo

I

OUT

DCOM

LE

Data

Clock

BPO DC

Bipolar Offset

Balanced Current

Segment DAC A

Input Shift Register

and Control Logic

Balanced Current

Segment DAC B

SERV DC

RF DC

ACOM

+V

CC

–V

CC

PCM1702P

PCM1702U

© 1993 Burr-Brown Corporation

PDS-1175B

Printed in U.S.A. June, 1995

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SBAS026