wm8953 Wolfson Microelectronics plc, wm8953 Datasheet - Page 98

• Manufacturer Part Number: wm8953
• Description: Low Power Stereo Adc With Pll And Tdm Interface Low Power Stereo Adc With Pll And Tdm Interface
• Manufacturer: Wolfson Microelectronics plc

WM8953
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APPLICATIONS INFORMATION
RECOMMENDED EXTERNAL COMPONENTS
Notes:
1. Wolfson recommend using a single, common ground reference. Where this is not possible care should be taken to optimise split ground
configuration for audio performance.
2. Supply decoupling capacitors on DCVDD, DBVDD and AVDD should be positioned as close to the WM8953 as possible. Values indicated
are minimum requirements.
3. Capacitor types should be carefully chosen. Capacitors with very low ESR are recommended for optimum performance.
4. The 2k2 MICBIAS resistors on each of the MIC inputs are typical values and will be suitable for many electret type microphones.
However, it is recommended that engineers refer to individual microphone specifications prior to finalising the value of this component.
MICBIAS
HANDSET
MIC
DVDD
2k2
AVDD
2k2
CONTROL INTERFACE
(2, 3 or 4-wire via GPIO)
HEADSET
AUDIO INTERFACE
MIC
0.1 F
INPUTS
INPUTS
0.1 F
LINE
LINE
GPIO
4.7 F
1 F
1 F
1 F
1 F
1 F
1 F
1 F
1 F
AVDD
DCVDD
DBVDD
MODE
CSB/ADDR
SCLK
SDIN
MCLK
BCLK
ADCLRC
ADCDAT
GPIO3
GPIO4
GPIO5
LIN1
LIN2
LIN3/GPI7
LIN4
RIN1
RIN2
RIN3/GPI8
RIN4
WM8953
MICBIAS
DGND
AGND
VMID
PD, January 2009, Rev 4.0
4.7 F
AGND
Production Data
4.7 F
MICBIAS
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