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WM8731 Datasheet(PDF) 55 Page - Wolfson Microelectronics plc

Part # WM8731
Description  Portable Internet Audion CODEC with Headphone Driver and Programmable Sample Rates
PDF  56 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8731 Datasheet(HTML) 55 Page - Wolfson Microelectronics plc

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WM8731
Advanced Information
WOLFSON MICROELECTRONICS LTD
AI Rev 2.0 February 2001
55
RECOMMENDED EXTERNAL COMPONENTS
WM8731
Codec
RHPOUT
VMID
100
Ω
CLKOUT
LOUT
+
47k
Ω
100
Ω
12
LHPOUT
+
47k
Ω
220
µF
9
AVDD
AGND
14
15
3.3V
HPVDD
HPGND
11
8
3.3V
ROUT
+
47k
Ω
100
Ω
13
+
47k
Ω
220
µF
10
2
0.1
µF
10
µF
+
16
RLINEIN
MICBIAS
DACLRC
DACDAT
ADCLRC
ADCDAT
5.6k
Ω
5.6k
Ω
+
19
LLINEIN
5.6k
Ω
5.6k
Ω
220pF
+
20
MICIN
DBVDD
DCVDD
3.3V
DGND
1.5V - 3.3V
1
28
27
BCLK
3
Audio Serial Data I/F
5
4
7
6
3-wire or 2-wire
MPU Interface
3-wire Interface
2-wire Interface
SDIN
23
CSB
22
SCLK
24
MODE
21
+
1
µF
Rmic
680
Ω
220pF
47k
Ω
17
18
10
µF0.1µF
10k
Ω
3.3V
XTO
XTI/MCLK
15pF
15pF
26
25
10
µF
Note:
1. Rmic - The value of this resistor is dependent on the gain setting. Refer to Page 20 for Rmic calculation.
2. Where possible, it is recommended that NPO or COG type capacitors should be used for best performance.
10
µF
0.1
µF
0.1
µF
0.1
µF
10
µF
1
µF
1
µF
1
µF
1
µF
220pF
Figure 55 External Components Diagram



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