WM8726

Production Data

w

PD, Rev 4.8, January 2012

19

APPLICATIONS INFORMATION

RECOMMENDED EXTERNAL COMPONENTS

VDD

GND

CAP

C

6

C

5

AGND

8

7

Hardware Control

WM8726

Notes:

1. C2, C5 should be positioned as close to the WM8726 as possible.

2. Capacitor types should be carefully chosen. Capacitors with very low ESR are

recommended for optimum performance.

3. C3 and C4 not required if using the recommended low pass filter in Figure 20.

C

2

VDD

C

1

13

FORMAT

12

DEEMPH

VOUTR

9

C

3

VOUTL

C

4

AC-Coupled

VOUTR/L

to External LPF

10

MUTE

6

14

MCLK

3

BCKIN

2

DIN

Audio Serial Data I/F

AGND

1

LRCIN

5

+

+

Figure 22 External Component Diagram

RECOMMENDED EXTERNAL COMPONENTS VALUES

COMPONENT

REFERENCE

SUGGESTED

VALUE

DESCRIPTION

C1

10

F

De-coupling for VDD

C2

0.1

F

De-coupling for VDD

C3 and C4

10

F

Output AC coupling caps to remove midrail DC level from outputs

C5

0.1

F

Reference de-coupling capacitors for CAP pin

C6

10

F

Table 7 External Components Description