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®
®
For most current data sheet and other product
information, visit www.burr-brown.com
DIGITAL-TO-ANALOG CONVERTER
FEATURES
ENHANCED MULTI-LEVEL ∆Σ DAC
INPUT AUDIO DATA WORD: 16-, 20-, 24-Bit
SAMPLING FREQUENCY (f
SYSTEM CLOCK: 256, 384, 512, 768f
HIGH PERFORMANCE:
THD+N: –96dB
Dynamic Range: 104dB
SNR: 104dB
AUDIO OUTPUT LEVEL: 0.57 x V
8x OVERSAMPLING DIGITAL FILTER WITH
HDCD DECODER:
Stopband Attenuation: –120dB
±
Passband Ripple:
0.00001dB
HDCD Filter Optimized for 44.1kHz to 48kHz
and 88.2kHz to 96kHz
MULTI-FUNCTIONS:
Digital De-emphasis
Soft Mute
Digital Attenuation
Zero Detect
Digital Gain Scaling
Reversible Output Phase
+5V SINGLE-SUPPLY OPERATION
SMALL SO-28 PACKAGE
NOTE: An HDCD license from Pacific Microsonics, Inc. is
required to purchase the PCM1732.
HDCD
®
is a registered trademark of Pacific Microsonics, Inc.
HDCD
®
technology is provided under license from Pacific Microsonics
Inc. The PCM1732's design is covered by the following patents:
In the USA: 45,479,168, 5,638,074, 5,640,161, 5,808,574, 5,838,274
5,854,600, 5,864,311, 5,872,531.
In Australia: 669,114.
Other patents pending.
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/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
© 1999 Burr-Brown Corporation
49%
FPO
PCM1732
24-Bit, 96kHz, Stereo Audio
TM
®
With HDCD
): 16kHz - 96kHz
s
S
(Vp-p)
CC
BCKIN
Serial
LRCIN
Input
I/F
DIN
2
ML/I
S
MC/DEM
MD/FSS
Mode
CS/IWO
Control
I/F
MODE
MUTE
RST
31
Decoder
DESCRIPTION
The PCM1732 is designed for mid- to high-grade
digital audio applications which achieve 96kHz sam-
pling rates with 24-bit audio data, such as High Defi-
nition Compatible Digital (HDCD) CD players, DVD
players, mini-disc players and AV receivers.
PCM1732 uses a newly-developed "enhanced, multi-
level delta-sigma modulator" architecture that im-
proves audio dynamic performance and reduces jitter
sensitivity.
The internal digital filter operates at 8x oversampling
at a 96kHz sampling rate, with –120dB stopband
attenuation.
HDCD
Amplitude
HDCD
Decoding
Hidden
Code
Recovery
HDCD
Enhanced
8x
Multi-Level
∆Σ
Oversampling
Digital Filter
Modulator
BPZ Control
SCK
Crystal/OSC
XTI
XTO
CLKO
V
CC1
HD755
PCM1732
V
L
OUT
Low-Pass
DAC
Filter
EXTL
V
R
OUT
Low-Pass
DAC
Filter
EXTR
ZERO
Power-On Reset
Open
Drain
Power Supply
AGND1
V
DGND
DD
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