WM8716 Datasheet, PDF (1/21 Pages) Wolfson Microelectronics plc – High Performance 24-bit, 192kHz Stereo DAC

WM8716
High Performance 24-bit, 192kHz Stereo DAC
Production Data, April 2001, Rev 3.1
DESCRIPTION
The WM8716 is a high performance stereo DAC designed
for audio applications such as CD, DVD, home theatre
systems, set top boxes and digital TV. The WM8716
supports data input word lengths from 16 to 24-bits and
sampling rates up to 192kHz. The WM8716 consists of a
serial interface port, digital interpolation filter, multi-bit sigma
delta modulator and stereo DAC in a small 28-pin SSOP
package. The WM8716 also includes a digitally controllable
mute and attenuator function on each channel.
The internal digital filter has two selectable roll-off
characteristics. A sharp or slow roll-off can be selected
dependent on application requirements. Additionally, the
internal digital filter can be by-passed and the WM8716
used with an external digital filter.
The WM8716 supports two connection schemes for audio
DAC control. The SPI-compatible serial control port
provides access to a wide range of features including on-
chip mute, attenuation and phase reversal. A hardware
controllable interface is also available.
FEATURES
• 112dB SNR (‘A’ weighted @ 48kHz), THD: -97dB @
-1dB FS
• Sampling frequency: 8kHz to 192kHz
• Selectable digital filter roll-off
• Optional interface to industry standard external filters
• Differential mono mode
• Input data word: 16 to 24-bit
• Hardware or SPI compatible serial port control modes:
− Hardware mode: mute, de-emphasis, audio format
control
− Serial mode: mute, de-emphasis, attenuation (256
steps), phase reversal
• Compatible upgrade to PCM1716
APPLICATIONS
• CD, DVD audio
• Home theatre systems
• Set top boxes
• Digital TV
BLOCK DIAGRAM
MODE ML/I2S MC/DM1 MD/DM0 DIFFHW MUTEB CSBIWO RSTB ZERO MODE8X AGNDR AVDDR
(24) (28) (27) (26)
(17) (25) (23) (22) (21) (12) (10) (9)
CONTROL INTERFACE
WM8716
(11) VMIDR
BCKIN (3)
LRCIN (1)
DIN (2)
SERIAL
INTERFACE
MUTE/
ATTEN
MUTE/
ATTEN
DIGITAL
FILTERS
MUX
SIGMA
DELTA
MODULATOR
MUX
SIGMA
DELTA
MODULATOR
RIGHT
DAC
LEFT
DAC
LOW
PASS
FILTER
LOW
PASS
FILTER
(13) VOUTR
(16) VOUTL
CRYSTAL/OSC
(4) (5) (6)
CLKO XTI XTO
(15) (8)
AVDD DVDD
(18) VMIDL
(20) (19)
(14) (7)
AVDDL. AGNDL AGND DGND
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.