Harman Kardon FL8550 Service Manual page 52

®
BiCMOS Advanced Sign Magnitude 20-Bit
DIGITAL-TO-ANALOG CONVERTER
FEATURES
ULTRA LOW –96dB max THD+N
(No External Adjustment Required)
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)
CAPABLE OF 16X OVERSAMPLING
COMPLETE WITH REFERENCE
LOW POWER (150mW typ)
Clock
Data
LE
DCOM
ACOM
+V
CC
–V
CC
International Airport Industrial Park •
Tel: (520) 746-1111 • Twx: 910-952-1111
© 1993 Burr-Brown Corporation
49%
FPO
Input Shift Register
and Control Logic
Reference
and
Servo
RF DC SERV DC
Mailing Address: PO Box 11400 • Tucson, AZ 85734
• Cable: BBRCORP • Telex: 066-6491
PDS-1175B
1
52
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.
Balanced Current
Segment DAC A
Balanced Current
Segment DAC B
Bipolar Offset
BPO DC
• Street Address: 6730 S. Tucson Blvd.
• FAX: (520) 889-1510 •
FL8550
PCM1702P
PCM1702U
I
OUT
• Tucson, AZ 85706
Immediate Product Info: (800) 548-6132
Printed in U.S.A. June, 1995
PCM1702
®