WM8734SEFL Wolfson Microelectronics, WM8734SEFL Datasheet - Page 6

• Manufacturer Part Number: WM8734SEFL
• Description: Audio CODECs Stereo CODEC
• Manufacturer: Wolfson Microelectronics

Specifications of WM8734SEFL

• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-28
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8734
PIN DESCRIPTION - QFN
Note: It is recommended that the QFN ground paddle is connected to analogue ground on the application PCB.
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PIN
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
1
2
3
4
5
6
7
8
9
DACDAT
DACLRC
ADCDAT
ADCLRC
RLINEIN
LLINEIN
DCVDD
DBVDD
DGND
AGND
MODE
MCLK
ROUT
AVDD
NAME
BCLK
LOUT
SCLK
VMID
SDIN
CSB
NC
NC
NC
NC
NC
NC
NC
NC
Digital Input/Output
Digital Input/Output
Digital Input/Output
Digital Input/Output
Analogue Output
Analogue Output
Analogue Output
Do Not Connect
Do Not Connect
Do Not Connect
Do Not Connect
Do Not Connect
Do Not Connect
Do Not Connect
Do Not Connect
Analogue Input
Analogue Input
Digital Output
Digital Input
Digital Input
Digital Input
Digital Input
Digital Input
Ground
Ground
Supply
Supply
Supply
TYPE
DESCRIPTION
Master Clock Input (MCLK)
Test Pin, must be left unconnected
Digital Core VDD
Digital GND
Digital Buffers VDD
Test Pin, must be left unconnected
Digital Audio Bit Clock, Pull Down, (see Note 1)
DAC Digital Audio Data Input
DAC Sample Rate Left/Right Clock. Pull Down (see Note 1)
ADC Digital Audio Data Output
ADC Sample Rate Left/Right Clock, Pull Down (see Note 1)
Test Pin, must be left unconnected
Test Pin, must be left unconnected
Test Pin, must be left unconnected
Test Pin, must be left unconnected
Left Channel Line Output
Right Channel Line Output
Analogue VDD
Analogue GND
Mid-rail reference decoupling point
Test Pin, must be left unconnected
Test Pin, must be left unconnected
Right Channel Line Input (AC coupled)
Left Channel Line Input (AC coupled)
Control Interface Selection, Pull Up (see Note 1)
3-Wire MPU Chip Select / 2-Wire MPU interface address selection, active low,
Pull up (see Note 1)
3-Wire MPU Data Input / 2-Wire MPU Data Input
3-Wire MPU Clock Input / 2-Wire MPU Clock Input
PD, Rev 4.3, January 2009
Production Data
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