WM8725
99dB Stereo DAC
Production Data, July 2000, Rev 2.0
DESCRIPTION
WM8725 is a high-performance stereo DAC designed for
use in portable audio equipment, video CD players and
similar applications. It comprises selectable normal or I
2
S
compatible serial data interfaces for 16 to 24-bit digital
inputs, high performance digital filters, and sigma-delta
output DACs, achieving an excellent 99dB signal-to-noise
performance.
The device is available in a 14-pin SO package that offers
selectable mute and de-emphasis functions using a
minimum of external components.
FEATURES
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Compatible with PCM1725
99dB SNR performance
Stereo DAC with input sampling from 8kHz to 96kHz
Additional mute feature
Normal or I
2
S compatible data format
Sigma-delta design with 64x oversampling
System clock 256fs or 384fs
Supply range 3V to 5V
14-pin SOIC package
APPLICATIONS
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Portable audio equipment
Video CD players
BLOCK DIAGRAM
WM8725
FORMAT (13)
SCKI (14)
LRCIN (1)
DIN (2)
BCKIN (3)
SERIAL
INTERFACE
DIGITAL
FILTERS
DIGITAL
SIGMA-DELTA
MODULATOR
SWITCHED
CAPACITOR
DAC
(9) VOUTL
DIGITAL
SIGMA-DELTA
MODULATOR
SWITCHED
CAPACITOR
DAC
(6) VOUTR
(12) (10)
DEEMPH MUTE
(8)
VDD
(5)
CAP
(7)
GND
WOLFSON MICROELECTRONICS LTD
Lutton Court, Bernard Terrace, Edinburgh, EH8 9NX, UK
Tel: +44 (0) 131 667 9386
Fax: +44 (0) 131 667 5176
Email: sales@wolfson.co.uk
http://www.wolfson.co.uk
Production Data
datasheets contain final
specifications current on publication date.
Supply of products conforms to Wolfson
Microelectronics鈥?Terms and Conditions.
餂?000
Wolfson Microelectronics Ltd
.
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