WM8961
PIN DESCRIPTION
PIN NO
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
NAME
VNEG
CFB2
CFB1
CPGND
CPVDD
MICBIAS
RINPUT
LINPUT
MICVDD
DVDD
DGND
BCLK
LRC
DACDAT
MCLK
ADCDAT
SCLK
SDIN
SPK_RN
SPKGND2
SPKVDD2
SPK_RP
SPK_LN
SPKGND1
SPK_LP
SPKVDD1
VMID
AGND
AVDD
HP_R
HP_L
VPOS
GND_PADDLE
Note:
TYPE
Analogue Output
Analogue Output
Analogue Output
Supply
Supply
Analogue Output
Analogue Input
Analogue Input
Supply
Supply
Supply
Digital Input / Output
Digital Input / Output
Digital Input
Digital Input
Digital Output
Digital Input
Digital Input/Output
Analogue Output
Supply
Supply
Analogue Output
Analogue Output
Supply
Analogue Output
Supply
Analogue Output
Supply
Supply
Analogue Output
Analogue Output
Analogue Output
DESCRIPTION
Pre-Production
Charge pump negative supply decoupling (powers HP_L,
HP_R)
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
Right channel input
Left channel input
Microphone bias amp supply
Digital core and buffer (I/O) supply
Digital ground
Audio interface bit clock
Audio interface left / right clock
DAC digital audio data
Master clock
ADC digital audio data
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
Right output (Line or headphone)
Left output (Line or headphone)
Charge pump positive supply decoupling (powers HP_L,
HP_R)
Die Paddle (Note 1)
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”
w
PP, August 2009, Rev 3.1
6
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
