WM8961
Pre-Production
PIN DESCRIPTION
PIN NO
NAME
TYPE
DESCRIPTION
Analogue Output
Charge pump negative supply decoupling (powers HP_L,
HP_R)
1
VNEG
Analogue Output
Analogue Output
Supply
Charge pump fly-back capacitor pin
Charge pump fly-back capacitor pin
Charge pump ground (Return path for CPVDD)
Charge pump power supply
Microphone bias
2
CFB2
CFB1
3
4
CPGND
CPVDD
MICBIAS
RINPUT
LINPUT
MICVDD
DVDD
Supply
5
Analogue Output
Analogue Input
Analogue Input
Supply
6
Right channel input
7
Left channel input
8
Microphone bias amp supply
Digital core and buffer (I/O) supply
Digital ground
9
Supply
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Supply
DGND
Digital Input / Output
Digital Input / Output
Digital Input
Digital Input
Digital Output
Digital Input
Digital Input/Output
Analogue Output
Supply
Audio interface bit clock
BCLK
Audio interface left / right clock
DAC digital audio data
LRC
DACDAT
MCLK
Master clock
ADC digital audio data
ADCDAT
SCLK
Control interface clock input
Control interface data input / 2-wire acknowledge output
Right speaker negative output
Ground for right speaker drivers
Supply for right speaker drivers
Right speaker positive output
Left speaker negative output
Ground for left speaker drivers
Left speaker positive output
Supply for left speaker drivers
Mid-rail voltage =AVDD/2 (requires decoupling capacitor)
Analogue ground (Return path for AVDD)
Analogue supply
SDIN
SPK_RN
SPKGND2
SPKVDD2
SPK_RP
SPK_LN
SPKGND1
SPK_LP
SPKVDD1
VMID
Supply
Analogue Output
Analogue Output
Supply
Analogue Output
Supply
Analogue Output
Supply
AGND
Supply
AVDD
Analogue Output
Analogue Output
Analogue Output
Right output (Line or headphone)
Left output (Line or headphone)
HP_R
HP_L
Charge pump positive supply decoupling (powers HP_L,
HP_R)
VPOS
Die Paddle (Note 1)
GND_PADDLE
Note:
It is recommended that the QFN ground paddle should be connected to analogue ground on the application PCB.
Refer to the application note WAN_0118 on “Guidelines on How to Use QFN Packages and Create Associated PCB Footprints”
PP, August 2009, Rev 3.1
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6
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
