參數(shù)資料
型號: WM8773
廠商: Wolfson Microelectronics
元件分類: ADC
英文描述: 24-bit, 96kHz ADC with 8 Channel I/P Multiplexer
中文描述: 24位,96kHz的ADC,具有8通道I /頁復(fù)用器
文件頁數(shù): 1/30頁
文件大小: 270K
代理商: WM8773
WM8773
24-bit, 96kHz ADC with 8 Channel I/P Multiplexer
WOLFSON MICROELECTRONICS LTD
w :: www.wolfsonmicro.com
Product Preview, April 2002, Rev 1.0
Copyright
2002 Wolfson Microelectronics Ltd.
DESCRIPTION
The WM8773 is a high performance, stereo audio ADC with
an 8 channel input selector. The WM8773 is ideal for
digitising multiple analogue sources for surround sound
processing applications for home hi-fi, automotive and other
audio visual equipment.
A stereo 24-bit multi-bit sigma delta ADC is used with an
eight stereo channel input selector. Each channel has
analogue domain mute and programmable gain control.
Digital audio output word lengths from 16-32 bits and
sampling rates from 8kHz to 96kHz are supported.
The audio data interface supports I
justified and DSP digital audio formats.
2
S, left justified, right
The device is controlled via a 3 wire serial interface. The
interface provides access to all features including channel
selection, volume controls, mutes, de-emphasis and power
management facilities. The device is available in a 64-pin
TQFP package.
FEATURES
Audio Performance
102dB SNR (‘A’ weighted @ 48kHz) ADC
ADC Sampling Frequency: 8kHz – 96kHz
3-Wire SPI MPU Serial Control Interface
Master or Slave Clocking Mode
Programmable Audio Data Interface Modes
I
2
S, Left, Right Justified or DSP
16/20/24/32 bit Word Lengths
Analogue Record Monitor Outputs
Eight stereo ADC inputs with analogue gain adjust from
+19dB to –12dB in 1dB steps
2.7V to 5.5V Analogue, 2.7V to 3.6V Digital supply
Operation
5V tolerant digital inputs
APPLICATIONS
Surround Sound AV Processors and Hi-Fi systems
Automotive Audio
BLOCK DIAGRAM
STEREO
ADC
A
A
V
AUDIO INTERFACE
AND
DIGITAL FILTERS
I
AIN2R
AIN3L
AIN3R
AIN4L
AIN4R
AIN5L
AIN5R
AIN6L
AIN6R
AIN7L
AIN7R
AIN8L
AIN8R
RECL
RECR
AINOPR
AINOPL
A
A
R
D
D
CONTROL INTERFACE
D
C
C
R
AIN2L
AIN1R
AIN1L
WM8773
MUTE
ADCLRC
BCLK
DOUT
MCLK
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