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WM8734EDS Datasheet

  • WM8734EDS

  • STEREO AUDIO CODEC

  • 413.61KB

  • 42頁

  • ETC

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Stereo Audio CODEC
DESCRIPTION
The WM8734 is a low power stereo CODEC ideal for MD,
CD-RW machines and DAT recording applications.
Stereo line inputs are provided, along with a mute function
and programmable line level volume control.
Stereo 24-bit multi-bit sigma delta ADCs and DACs are
used with oversampling digital interpolation and decimation
filters.
Digital audio input word lengths from 16-32 bits and
sampling rates from 8kHz to 96kHz are supported.
Stereo audio line level outputs are provided along with anti-
thump mute and power up/down circuitry.
The device is controlled via a 2 or 3 wire serial interface.
The interface provides access to all features including level
controls, mutes, de-emphasis and power management
facilities. The device is available in 20-pin SSOP or 5x5mm
QFN packages.
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
WM8734
FEATURES
鈥?/div>
Audio Performance
鈭?/div>
90dB SNR (鈥楢鈥?weighted @ 48kHz) ADC
鈭?/div>
100dB SNR (鈥楢鈥?weighted @ 48kHz) DAC
鈭?/div>
2.7 鈥?3.6V Digital Supply Operation
鈭?/div>
2.7 鈥?3.6V Analogue Supply Operation
ADC and DAC Sampling Frequency: 8kHz 鈥?96kHz
Selectable ADC High Pass Filter
2 or 3-Wire MPU Serial Control Interface
Programmable Audio Data Interface Modes
鈭?/div>
I
2
S, Left, Right Justified or DSP
鈭?/div>
16/20/24/32 bit Word Lengths
鈭?/div>
Master or Slave Clocking Mode
Stereo Audio Inputs and Outputs
20-Pin SSOP or 5x5mm QFN Package Options
APPLICATIONS
鈥?/div>
鈥?/div>
CD and Minidisc Recorder
MP3 Player / Recorder
BLOCK DIAGRAM
CSB
SDIN
MODE
SCLK
AVDD
CONTROL INTERFACE
VMID
AGND
W
WM8734
RLINEIN
VOL
ADC
DAC
MUTE
ROUT
+12 to -34.5dB,
1.5dB Steps
DIGITAL
FILTERS
LLINEIN
VOL
ADC
DAC
MUTE
LOUT
+12 to -34.5dB,
1.5dB Steps
CLKIN
DIVIDER
(Div x1, x2)
DIGTAL AUDIO INTERFACE
MCLK
DBVDD
DACDAT
DACLRC
ADCLRC
WOLFSON MICROELECTRONICS LTD
www.wolfsonmicro.com
ADCDAT
DCVDD
Advanced Information, November 2001, Rev 2.2
Copyright
餂?001
Wolfson Microelectronics Ltd
.
DGND
BCLK

WM8734EDS相關(guān)型號(hào)PDF文件下載

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