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Burr-Brown Corporation - Stereo Audio DIGITAL-TO-ANALOG CONVERTER with VCXO and PLL

Numéro de référence PCM1740E
Description Stereo Audio DIGITAL-TO-ANALOG CONVERTER with VCXO and PLL
Fabricant Burr-Brown Corporation 
Logo Burr-Brown Corporation 





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PCM1740E fiche technique
®
PCM1740
PCM1740
For most current data sheet and other product
information, visit www.burr-brown.com
TM Stereo Audio
DIGITAL-TO-ANALOG CONVERTER
with VCXO and PLL
FEATURES
DESCRIPTION
q COMPLETE DELTA-SIGMA STEREO DAC
The PCM1740 is a complete stereo audio digital-to-analog
q VOLTAGE-CONTROLLED CRYSTAL
OSCILLATOR: 27MHz ±150ppm Output with
0V to 3V Input
q PROGRAMMABLE PLL
256fS or 384fS Audio System Clock Output
q DYNAMIC PERFORMANCE:
Dynamic Range: 94dB
SNR: 94dB
THD+N: –89dB
q SAMPLING FREQUENCIES:
16kHz, 22.05kHz, 24kHz
converter with on-chip PLL and VCXO. The PCM1740 is
designed specifically for set-top box applications requiring
high-quality audio playback, a precision tuned 27MHz mas-
ter clock source, and support for multiple audio-sampling
frequencies.
The stereo D/A converter utilizes multi-bit, delta-sigma
architecture, which includes an 8x interpolation filter, third-
order noise shaping, 5-level amplitude quantization, and an
analog low-pass filter. The PCM1740 includes a number of
user-programmable functions, which are accessed via a
standard I2C-Bus interface.
32kHz, 44.1kHz, 48kHz
64kHz, 88.2kHz, 96kHz
APPLICATIONS
q SERIAL AUDIO INTERFACE:
q SET-TOP BOXES
Standard or I2S Data Formats
q DIGITAL BROADCAST RECEIVERS
16-, 20-, or 24-Bit Data
q I2C-BUS® INTERFACE FOR CONTROL
REGISTERS(1):
Slave Receiver Operation
7-Bit Addressing
Standard Transfer Rate (up to 100kbps)
q PROGRAMMABLE CONTROLS:
Digital Attenuation (256 steps)
Soft Mute
Infinite Zero Detect Mute
De-Emphasis (32kHz, 44.1kHz, 48kHz)
DAC Output Mode
q SINGLE +5V SUPPLY
q SMALL SSOP-24 PACKAGE
BCK
LRCK
DATA
SCL
SDA
AD1
AD0
XTUN
27MHz
Crystal
XT1
XT2
RST
PCM
Audio
I/F
I2C
I/F
and
REGs
VCXO
8x
Oversampling
Digital Filter
and
Sub-Functions
Process
DAC
(L)
DAC
(R)
Low-Pass
Filter
and Amp
Counter N
Counter M
Phase
Detector
LPF
VCO
Reset
Power Supply
VOUTL
VCOM
VOUTR
ZERO
SCKO
(256fS/ 384fS)
MCKO
(27MHz)
VPP PGND VCC AGND VDD DGND
NOTE: (1) I2C-Bus® is a registered trademark of Philips Semiconductor.
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
© 2000 Burr-Brown Corporation
PDS-11551A
PPrCinteMd in1U7.S4.A0. February, 2000
®

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