®
49%
FPO
PCM1702P
PCM1702U
BiCMOS Advanced Sign Magnitude 20-Bit
DIGITAL-TO-ANALOG CONVERTER
FEATURES
q
ULTRA LOW –96dB max THD+N
(No External Adjustment Required)
q
q
q
q
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NEAR-IDEAL LOW LEVEL OPERATION
GLITCH-FREE OUTPUT
120dB SNR TYP (A-Weight Method)
INDUSTRY STD SERIAL INPUT FORMAT
FAST (200ns) CURRENT OUTPUT
(
±
1.2mA)
DESCRIPTION
The PCM1702 is a precision 20-bit digital-to-analog
converter with ultra-low distortion (–96dB typ with a
full scale output). Incorporated into the PCM1702 is
an advanced sign magnitude architecture that elimi-
nates unwanted glitches and other nonlinearities around
bipolar zero. The PCM1702 also features a very low
noise (120dB typ SNR: A-weighted method) and fast
settling current output (200ns typ, 1.2mA step) which
is capable of 16X oversampling rates.
Applications include very low distortion frequency
synthesis and high-end consumer and professional
digital audio applications.
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CAPABLE OF 16X OVERSAMPLING
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COMPLETE WITH REFERENCE
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LOW POWER (150mW typ)
Clock
Data
LE
DCOM
ACOM
+V
CC
–V
CC
Input Shift Register
and Control Logic
Balanced Current
Segment DAC A
Balanced Current
Segment DAC B
Reference
and
Servo
Bipolar Offset
I
OUT
RF DC
SERV DC
BPO DC
International Airport Industrial Park • Mailing Address: PO Box 11400
Tel: (520) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP •
© 1993 Burr-Brown Corporation
• Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706
Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
PDS-1175B
Printed in U.S.A. June, 1995
®
1
PCM1702
BURR-BROWN [ BURR-BROWN CORPORATION ]
