1

®

PCM63P

PCM63P

FEATURES

q COLINEAR 20-BIT AUDIO DAC

q NEAR-IDEAL LOW LEVEL OPERATION

q GLITCH-FREE OUTPUT

q ULTRA LOW –96dB max THD+N

(Without External Adjustment)

q 116dB SNR min (A-Weight Method)

q INDUSTRY STD SERIAL INPUT FORMAT

q FAST (200ns) CURRENT OUTPUT

(

q CAPABLE OF 16x OVERSAMPLING

q COMPLETE WITH REFERENCE

DESCRIPTION

The PCM63P is a precision 20-bit digital-to-analog

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

full scale output; PCM63P-K). Incorporated into the

PCM63P is a unique Colinear dual-DAC per channel

architecture that eliminates unwanted glitches and

other nonlinearities around bipolar zero. The PCM63P

also features a very low noise (116dB max SNR;

A-weighted method) and fast settling current output

(200ns typ, 2mA step) which is capable of 16-times

oversampling rates.

Applications include very low distortion frequency

synthesis and high-end consumer and professional

digital audio applications.

Colinear ™, Burr-Brown Corp.

DIGITAL-TO-ANALOG CONVERTER

®

19-Bit

Upper

DAC

19-Bit

Lower

DAC

Upper DAC

Positive

Data Latches

Lower DAC

Negative

Data Latches

Input Shift

Register

and

Control

Logic

Buried

Zener

Reference

Servo

Amp

Ref

Amp

PCM63P

20-Bit DAC

9

10

6

R

R

I

FEEDBACK

FEEDBACK

OUT

5

4

Bipolar Offset Current

Offset Decouple

25

7

12

Analog

Common

Digital

Common

31

Reference

Decouple

Servo

Decouple

18

20

21

Clock

Latch Enable

Data

23

24

Upper

B2 Adj

28

11

–5V

Analog

213

+5V

Analog

Lower

B2 Adj

–5V

Digital

+5V

Digital

Colinear

Potentiometer

Voltage

DEMO BOARD

AVAILABLE

See Appendix A

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

PCM63P

© 1990 Burr-Brown Corporation

PDS-1083F

Printed in U.S.A. January, 1998

SBAS006