WM8718
Production Data
PIN DESCRIPTION – 24 LEAD QFN
PIN
1
NAME
DVDD
DGND
AVDD
VREFP
VREFN
AGND
VMID
TYPE
Supply
DESCRIPTION
Positive Digital Supply
Ground Digital Supply
Positive Analogue Supply
2
Supply
3
Supply
4
Supply
Positive DAC reference Supply
Negative DAC reference Supply
Ground Analogue Supply
5
Supply
6
Supply
7
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
No Connect
Mid Rail Decoupling Point
Right Channel DAC Output Positive
Right Channel DAC Output Negative
Left Channel DAC Output Negative
Left Channel DAC Output Positive
No Connect
8
VOUTRP
VOUTRN
VOUTLN
VOUTLP
NC
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
NC
No Connect
No Connect
LATCH
SDIN
Digital Input P.U.
Digital Input
Serial Control Load Input
Serial Control Data Input
SCLK
Digital Input P.D.
Digital Output (Open drain)
No Connect
Serial Control Data Input Clock
Infinite ZERO Detect Flag for Right Channel
No Connect
ZEROFR
NC
ZEROFL
MCLK
BCLKIN
DIN
Digital Output (Open drain)
Digital Input
Infinite ZERO Detect Flag for Left Channel
Master Clock Input
Digital Input
PCM Audio Data Bit Clock Input
PCM Serial Audio Data Input
PCM DAC Sample Rate Clock Input
No Connect
Digital Input
LRCIN
NC
Digital Input
No Connect
Note:
1. Digital input pins have Schmitt trigger input buffers. Pins marked `P.U.` or `P.D.` have an internal pull-up or pull-down
resistor.
2. It is recommended that the QFN ground paddle should be connected to analogue ground on the application PCB.
PD Rev 4.3 November 2006
w
6
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
