Product Preview
WM8774
PIN DESCRIPTION
PIN
NAME
TYPE
DESCRIPTION
Channel 1 left input multiplexor virtual ground
Channel 1 right input multiplexor virtual ground
Channel 2 left input multiplexor virtual ground
Channel 2 right input multiplexor virtual ground
Channel 3 left input multiplexor virtual ground
Channel 3 right input multiplexor virtual ground
Channel 4 left input multiplexor virtual ground
Channel 4 right input multiplexor virtual ground
Channel 5 left input multiplexor virtual ground
Channel 5 right input multiplexor virtual ground
Channel 6 left input multiplexor virtual ground
Channel 6 right input multiplexor virtual ground
Channel 7 left input multiplexor virtual ground
Channel 7 right input multiplexor virtual ground
Channel 8 left input multiplexor virtual ground
Channel 8 right input multiplexor virtual ground
1
AIN1L
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
2
AIN1R
AIN2L
3
4
AIN2R
AIN3L
5
6
AIN3R
AIN4L
7
8
AIN4R
AIN5L
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
AIN5R
AIN6L
AIN6R
AIN7L
AIN7R
AIN8L
AIN8R
AINOPL
AINVGL
AINVGR
AINOPR
RECL
Analogue Output Left channel multiplexor output
Analogue Input
Analogue Input
Left channel multiplexor virtual ground
Right channel multiplexor virtual ground
Analogue Output Right channel multiplexor output
Analogue Output Left channel input mux select output
RECR
Analogue Output Right channel input mux select output
REFADC
VMIDADC
AGND1
AVDD1
AUXL
Analogue Output ADC reference buffer decoupling pin; 10uF external decoupling
Analogue Output ADC midrail divider decoupling pin; 10uF external decoupling
Supply
Supply
Analogue input
Analogue input
NC
Analogue negative supply and substrate connection
Analogue positive supply
Multiplexor channel left virtual ground input
3.1 Multiplexor channel right virtual ground input
No connection
AUXR
NC
No connection
NC
No connection
NC
No connection
AVDD2
VOUTL
Supply
Analogue output
Analogue output
Supply
NC
Analogue positive supply
DAC channel 1 left output
DAC channel 1 right output
DAC positive reference supply
No connection
VOUTR
DACREFP1
GR1
VMIDDAC
GR2
Supply
NC
DAC ground reference
No connection
Analogue output
NC
DAC midrail decoupling pin ; 10uF external decoupling
No connection
Supply
NC
DAC ground reference
No connection
DACREFP2
Supply
NC
DAC positive reference supply
No connection
NC
No connection
AGND2
DGND
DVDD
Supply
Supply
Supply
Analogue negative supply and substrate connection
Digital negative supply
Digital positive supply
PP Rev 1.0 June 2002
3
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
