PCM67P Datasheet, PDF (1/13 Pages) Burr-Brown (TI) – Advanced 1-Bit BiCMOS Dual 18-Bit DIGITAL-TO-ANALOG CONVERTER

®
PCM67P/U
PCM69AP/AU
SBAS024
Advanced 1-Bit BiCMOS Dual 18-Bit
DIGITAL-TO-ANALOG CONVERTER
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°C to +85°C
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
Digital Signal In
Input
Interface
10-Bit DAC plus
Analog Correction
Advanced 1-Bit
DAC
10-Bit DAC plus
Analog Correction
Advanced 1-Bit
DAC
Analog Output Lch
Buffer
V_COM
Lch
Buffer
V_COM
Rch
Analog Output Rch
International Airport Industrial Park • Mailing Address: PO Box 11400 • Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706
Tel: [phone] • Twx: 910-952-1111 • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]
© 1992 Burr-Brown Corporation
PDS-1168A
Printed in U.S.A. August, 1993