Production Data
WM8195
RECOMMENDED EXTERNAL COMPONENTS
DVDD1
DVDD2, 3
10
24
35
18
25
30
36
40
DVDD1
DVDD2
DVDD3
DGND1
DGND2
DGND3
DGND4
DGND5
C1
C2
C3
3
5
DGND
AGND1
AGND2
AGND3
AGND4
AGND5
AGND6
AVDD
43
44
AVDD1
AVDD2
7
C4
9
45
46
AGND
8
6
4
RINP
GINP
BINP
AGND
Video
Inputs
48
1
VRT
VRX
VRB
C5
C6
2
47
VRLC/VBIAS
C10
C7
C8
C9
WM8195
AGND
AGND
17
15
39
38
37
34
33
32
31
29
28
27
26
23
22
21
MCLK
VSMP
OP[13]/SDO
OP[12]
OP[11]
OP[10]
OP[9]
Timing
Signals
12
14
13
16
42
SEN/STB
SCK/RNW
SDI/DNA
RLC/ACYC
NRESET
DVDD1
DVDD2, 3 AVDD1, 2
OP[8]
C11
+
C12
C13
+
Interface
Controls
Output
Data
Bus
+
OP[7]
OP[6]
OP[5]
11
OEB
OP[4]
AGND
OP[3]
OP[2]
OP[1]
OP[0]
NOTES: 1. C1-10 should be fitted as close to WM8195 as possible.
2. AGND1-6 and DGND1-5 should be connected as close to WM8195 as possible.
3. DVDD1-3 should be connected as close to WM8195 as possible.
Figure 27 External Components Diagram
COMPONENT
REFERENCE
SUGGESTED
VALUE
DESCRIPTION
C1
C2
100nF
100nF
100nF
100nF
10nF
1µF
De-coupling for DVDD1.
De-coupling for DVDD2.
De-coupling for DVDD3.
C3
C4
De-coupling for AVDD1 and AVDD2.
High frequency de-coupling between VRT and VRB.
C5
C6
Low frequency de-coupling between VRT and VRB (non-polarised).
De-coupling for VRB.
C7
100nF
100nF
100nF
100nF
1µF
C8
De-coupling for VRX.
C9
De-coupling for VRT.
C10
C11
C12
C13
De-coupling for VRLC.
Reservoir capacitor for DVDD1.
Reservoir capacitor for DVDD2 and DVDD3.
Reservoir capacitor for AVDD1 and AVDD2.
1µF
1µF
Table 8 External Components Descriptions
PD Rev 4.1 July 2005
31
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
