PCM1723

Manufacturer Part NumberPCM1723
DescriptionPCM1723Stereo Audio DIGITAL-TO-ANALOG CONVERTER WITH PROGRAMMABLE PLL
ManufacturerTexas Instruments, Inc.
PCM1723 datasheet
 


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®
DIGITAL-TO-ANALOG CONVERTER
WITH PROGRAMMABLE PLL
FEATURES
ACCEPTS 16-, 20-, OR 24-BIT INPUT DATA
COMPLETE STEREO DAC: Includes Digital
Filter and Output Amp
DYNAMIC RANGE: 94dB
MULTIPLE SAMPLING FREQUENCIES:
16kHz, 22.05kHz, 24kHz
32kHz, 44.1kHz, 48kHz
64kHz, 88.2kHz, 96kHz
PROGRAMMABLE PLL CIRCUIT:
256f
/384f
from 27MHz Master Clock
S
S
2
NORMAL OR I
S DATA INPUT FORMATS
SELECTABLE FUNCTIONS:
Soft Mute
Digital Attenuator (256 Steps)
Digital De-emphasis
OUTPUT MODE: Left, Right, Mono, Mute
BCKIN
Serial
LRCIN
Input
I/F
DIN
ML
MC
MD
Mode
Control
I/F
256f
/384f
S
S
RSTB
SCKO
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/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
© 1996 Burr-Brown Corporation
49%
FPO
Stereo Audio
TM
DESCRIPTION
The PCM1723 is a complete low cost stereo audio
digital-to-analog converter (DAC) with a phase-locked
loop (PLL) circuit included. The PLL derives either
256f
or 384f
S
reference frequency. The DAC contains a 3rd-order
modulator, a digital interpolation filter, and an analog
output amplifier. The PCM1723 can accept 16-, 20-, or
24-bit input data in either normal or I
The digital filter performs an 8X interpolation func-
tion and includes selectable features such as soft mute,
digital attenuation and digital de-emphasis. The PLL
can be programmed for sampling at standard digital
audio frequencies as well as one-half and double
sampling frequencies.
The PCM1723 is ideal for applications which combine
compressed audio and video data such as DVD, DVD-
ROM, set-top boxes and MPEG sound cards.
Multi-level
Delta-Sigma
Modulator
8X Oversampling
Digital Filter
with Function
Controller
Multi-level
Delta-Sigma
Modulator
BPZ-Cont.
PLL
OSC
MCKO
XTI XTO
V
PGND V
CP
PDS-1344B
PCM1723
system clock from an external 27MHz
S
2
S formats.
V
L
OUT
Low-pass
DAC
Filter
CAP
V
R
OUT
Low-pass
DAC
Filter
ZERO
Open Drain
Power Supply
AGND
V
DGND
CC
DD
Printed in U.S.A. January, 1998

PCM1723 Summary of contents