參數(shù)資料
型號(hào): WM8718
廠商: Wolfson Microelectronics
英文描述: 24 BIT DIFFERENTIAL STEREO DAC WITH VOLUME CONTROL
中文描述: 24位差分立體聲DAC,具有音量控制
文件頁(yè)數(shù): 1/27頁(yè)
文件大小: 284K
代理商: WM8718
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24 Bit Differential Stereo DAC with Volume Control
DESCRIPTION
WM8718
WOLFSON MICROELECTRONICS plc
www.wolfsonmicro.com
Production Data, March 2004, Rev 4.1
Copyright
2004 Wolfson Microelectronics plc
The WM8718 is a high performance differential stereo DAC
designed for audio applications such as DVD, home theatre
systems and digital TV. The WM8718 supports PCM data
input word lengths from 16 to 32-bits and sampling rates up
to 192kHz. The WM8718 consists of a serial interface port,
digital interpolation filters, multi-bit sigma delta modulators
and differential stereo DAC in a small 20-pin SSOP
package. The WM8718 includes a digitally controllable
mute, an attenuate function and zero flag output for each
channel.
The 3-wire serial control port provides access to a wide
range of features including on-chip mute, attenuation and
phase reversal.
The WM8718 is an ideal device to interface to AC-3
,
DTS
, and MPEG audio decoders for surround sound
applications, or for use in DVD players including those
supporting DVD-A.
FEATURES
24 bit Stereo DAC
Fully Differential Voltage Outputs
Audio Performance
-
111dB SNR (‘A’ weighted @ 48kHz) DAC
-
-100dB THD
DAC Sampling Frequency: 8kHz - 192kHz
3 Wire Serial Control Interface
Programmable Audio Data Interface Modes
-
I
2
S, Left, Right Justified, DSP
-
16/20/24/32 bit Word Lengths
Independent Digital Volume Control on Each Channel with
127.5dB Range in 0.5dB Steps
Independent Zero Flag Outputs
3.0V - 5.5V Supply Operation
20-pin SSOP Package
APPLICATIONS
CD, DVD, and DVD-Audio Players
Home theatre systems
Professional mixing desks
BLOCK DIAGRAM
AUDIO
INTERFACE
ATT/
MUTE
CONTROL
INTERFACE
BCKIN
VOUTLN
VOUTRN
SIGMA
DELTA
MODULATOR
LRCIN
DIN
ATT/
MUTE
SIGMA
DELTA
MODULATOR
DIGITAL
FILTERS
M
S
S
L
VMID
DAC
DAC
V
V
VOUTRP
VOUTLP
ZEROFL
ZEROFR
A
A
D
D
W
WM8718
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