WM8736 Datasheet, PDF (1/17 Pages) Wolfson Microelectronics plc – 24-bit, 96kHz 6-Channel DAC with Volume Control

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 MODE MUTE
(10)
(8)
(9)
BCKIN (3)
LRCIN (4)
DIN0 (5)
DIN1 (6)
DIN2 (7)
256fs/384fs/512fs
WM8736
CONTROL INTERFACE
MUTE/
ATTEN
SIGMA
DELTA
MODULATOR
STEREO
DAC
SERIAL
INTERFACE
DIGITAL
FILTERS
MUTE/
ATTEN
SIGMA
DELTA
MODULATOR
STEREO
DAC
MUTE/
ATTEN
SIGMA
DELTA
MODULATOR
STEREO
DAC
(27) OUT0R
(26) GR0
(25) OUT0L
(23) OUT1R
(22) GR1
(21) OUT1L
(19) OUT2R
(18) GR2
(17) OUT2L
(24) (20)
(11) (16)
(28)
(15)
(1)
AGND2 AGND1 DGND CAP AVDD2 AVDD1 DVDD
WOLFSON MICROELECTRONICS LTD
Lutton Court, Bernard Terrace, Edinburgh, EH8 9NX, UK
Tel: [phone]
Fax: [phone]
Email: [e-mail]
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.