WM8736
24-bit, 96kHz 6-Channel DAC with Volume Control
Production Data, January 2001, Rev 2.1
DESCRIPTION
The WM8736 is a high performance 6-channel DAC
designed for audio applications such as DVD, home theatre
systems, and digital TV. The WM8736 supports data input
word lengths from 16 to 24-bits and sampling rates up to
96kHz. The WM8736 consists of a serial interface port,
digital interpolation filters, multi-bit sigma delta modulators
and 6 DACs in a small 28-pin SSOP package. The
WM8736 also includes a digitally controllable mute and
attenuator function on each channel.
The WM8736 supports a variety of connection schemes for
audio DAC control. The SPI-compatible serial port provides
access to a wide range of features including on-chip mute,
attenuation and phase reversal. A hardware controllable
interface is also available.
The WM8736 is an ideal device to interface to AC-3,
DTS, and MPEG audio decoders for surround sound
applications.
FEATURES
•
•
6-channel DAC
Performance:
−
102dB SNR (‘A’ weighted @ 48kHz), THD+N: -95dB
at full scale
5V or 3.3V supply operation
Sampling frequency: 8kHz to 96kHz
Input data word: 16 to 24-bit
Hardware or SPI compatible serial port control modes:
−
Hardware mode: system clock, reset, mute
−
Serial control mode: mute, de-emphasis, digital
attenuation (256 steps), zero mute, power down
•
•
•
•
APPLICATIONS
•
•
•
•
DVD
Home theatre systems
Digital TV
Digital broadcast receivers
BLOCK DIAGRAM
SCKI
(2)
ML/I2S MC/IWL MD/DM
(12)
(13)
(14)
RSTB
(10)
MODE
(8)
MUTE
(9)
256fs/384fs/512fs
CONTROL INTERFACE
WM8736
SIGMA
DELTA
MODULATOR
(27) OUT0R
STEREO
DAC
(26) GR0
(25) OUT0L
MUTE/
ATTEN
BCKIN (3)
LRCIN (4)
DIN0 (5)
DIN1 (6)
DIN2 (7)
MUTE/
ATTEN
SERIAL
INTERFACE
DIGITAL
FILTERS
MUTE/
ATTEN
(23) OUT1R
SIGMA
DELTA
MODULATOR
STEREO
DAC
(22) GR1
(21) OUT1L
(19) OUT2R
SIGMA
DELTA
MODULATOR
STEREO
DAC
(18) GR2
(17) OUT2L
(24)
(20)
AGND2 AGND1
(11)
DGND
(16)
CAP
(28)
(15)
AVDD2 AVDD1
(1)
DVDD
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
www.wolfsonmicro.com
Production Data
Datasheets contain final
specifications current on publication date.
Supply of products conforms to Wolfson
Microelectronics’ Terms and Conditions.
2001
Wolfson Microelectronics Ltd
.
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
