PCM67P/U

PCM69AP/AU

FEATURES

q 18-BIT RESOLUTION DUAL AUDIO DAC

q EXCELLENT THD PERFORMANCE:

0.0025% (–92dB) at F/S, K Grade

1.0% (–40dB) at –60dB, K Grade

q HIGH S/N RATIO: 110dB typ (IHF-A)

q DUAL, CO-PHASE

q SINGLE SUPPLY +5V OPERATION

q LOW POWER: 75mW typical

q CAPABLE OF 16X OVERSAMPLING

q AVAILABLE IN SPACE SAVING

16-PIN DIP OR 20-PIN SOIC

q OPERATING TEMP RANGE:

–25

q EXTREMELY LOW GLITCH ENERGY

DESCRIPTION

The PCM67 and PCM69A dual 18-bit DAC are low

cost, dual output 18-bit BiCMOS digital-to-analog con-

verters utilizing a novel architecture to achieve excel-

lent low level performance.

By combining a conventional thin-film R-2R ladder

DAC, a digital offset technique with analog correction

and an advanced one-bit DAC using first order noise

shaping technique, the PCM67 and PCM69A achieve

high resolution, minimal glitch, and low zero-crossing

distortion.

PCM67 digital offset occurs at bit 9, making it ideal for

high-performance CD players. PCM69A digital offset

occurs at bit 4, making it an excellent choice for digital

musical instruments and audio DSP.

Both PCM67 and PCM69A operate from a single +5V

supply. The low power consumption and small size (16-

pin PDIP or 20-pin SOIC) make these converters ideal

for a variety of digital audio applications.

Reference

Servo

Input

Interface

Digital Signal In

10-Bit DAC plus

Analog Correction

Advanced 1-Bit

DAC

10-Bit DAC plus

Analog Correction

Advanced 1-Bit

DAC

Analog Output Lch

Analog Output Rch

Buffer

V

COM

Lch

Buffer

V

COM

Rch

Advanced 1-Bit BiCMOS Dual 18-Bit

DIGITAL-TO-ANALOG CONVERTER

®

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

•

Cable: BBRCORP

•

Telex: 066-6491

•

FAX: (520) 889-1510

•

Immediate Product Info: (800) 548-6132

© 1992 Burr-Brown Corporation

PDS-1168A

Printed in U.S.A. August, 1993

SBAS024