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PCM1725

Stereo Audio

DIGITAL-TO-ANALOG CONVERTER

16 Bits, 96kHz Sampling

TM

PCM1725

DESCRIPTION

The PCM1725 is a complete low cost stereo audio

digital-to-analog converter (DAC), operating off of a

256fS or 384fS system clock. The DAC contains a 3rd-

order

∆Σ modulator, a digital interpolation filter, and

an analog output amplifier. The PCM1725 accepts

16-bit input data in either normal or I2S formats.

The digital filter performs an 8X interpolation function

and includes de-emphasis at 44.1kHz. The PCM1725

can accept digital audio sampling frequencies from

16kHz to 96kHz, always at 8X oversampling.

The PCM1725 is ideal for low-cost, CD-quality con-

sumer audio applications.

®

FEATURES

q COMPLETE STEREO DAC: Includes Digital

Filter and Output Amp

q DYNAMIC RANGE: 95dB

q MULTIPLE SAMPLING FREQUENCIES:

16kHz to 96kHz

q 8X OVERSAMPLING DIGITAL FILTER

q SYSTEM CLOCK: 256f

S / 384fS

q NORMAL OR I2S DATA INPUT FORMATS

q SMALL 14-PIN SOIC PACKAGE

PCM1725

International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111

Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132

Serial

Input

I/F

Mode

Control

I/F

8X Oversampling

Digital Filter

SCKI

256f

S/384fS

V

CC

GND

Multi-level

Delta-Sigma

Modulator

V

OUTL

CAP

DAC

Multi-level

Delta-Sigma

Modulator

Low-pass

Filter

Low-pass

Filter

V

OUTR

DAC

FORMAT

LRCIN

DIN

BCKIN

DM

Power Supply

© 1997 Burr-Brown Corporation

PDS-1373C

Printed in U.S.A. January, 1998

SBAS067