®
PCM67P/U
PCM69AP/AU
Advanced 1-Bit BiCMOS Dual 18-Bit
DIGITAL-TO-ANALOG CONVERTER
FEATURES
DESCRIPTION
● 18-BIT RESOLUTION DUAL AUDIO DAC
The PCM67 and PCM69A dual 18-bit DAC are low
cost, dualoutput18-bitBiCMOSdigital-to-analogcon-
verters utilizing a novel architecture to achieve excel-
lent low level performance.
● EXCELLENT THD PERFORMANCE:
0.0025% (–92dB) at F/S, K Grade
1.0% (–40dB) at –60dB, K Grade
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.
● HIGH S/N RATIO: 110dB typ (IHF-A)
● DUAL, CO-PHASE
● SINGLE SUPPLY +5V OPERATION
● LOW POWER: 75mW typical
● CAPABLE OF 16X OVERSAMPLING
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.
● AVAILABLE IN SPACE SAVING
16-PIN DIP OR 20-PIN SOIC
● OPERATING TEMP RANGE:
–25°C to +85°C
Both PCM67 and PCM69A operate from a single +5V
supply. Thelowpowerconsumptionandsmallsize(16-
pin PDIP or 20-pin SOIC) make these converters ideal
for a variety of digital audio applications.
● EXTREMELY LOW GLITCH ENERGY
10-Bit DAC plus
Analog Correction
Reference
Servo
Analog Output Lch
Advanced 1-Bit
VCOM
Lch
DAC
Buffer
Buffer
VCOM
Rch
10-Bit DAC plus
Analog Correction
Input
Digital Signal In
Analog Output Rch
Interface
Advanced 1-Bit
DAC
International Airport Industrial Park
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Mailing Address: PO Box 11400
Cable: BBRCORP
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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 Twx: 910-952-1111
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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
© 1992 Burr-Brown Corporation
PDS-1168A
Printed in U.S.A. August, 1993
SBAS024
BB [ BURR-BROWN CORPORATION ]
