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WM8181

WOLFSON MICROELECTRONICS LTD

AI Rev 3.0 January 2000

13

RECOMMENDED EXTERNAL COMPONENTS

11

13

3

DVDD

DGND

VINP

VINM

CLAMP

MCLK

VREFIN

AGND2

AGND1

AVDD

Clamp

Control

Reference

Control

14

DOUT

Output Data

7

6

VRB

VRT

C

3

DGND

DVDD

C

7

AGND

AVDD

C

8

C

4

C

6

C

5

AGND

References

16

1

2

AVDD

15

10

DVDD

C

1

4

5

Video

Inputs

12

VSMP

Timin g

Si g nals

WM8181

C

NOTES:

AGND and DGND should be connected

as close to WM8181 as possible.

WM8181 as possible.

1.

2.

C

2

++

Figure 6 Recommended External Components Diagram

COMPONENT

REFERENCE

SUGGESTED

VALUE

DESCRIPTION

C1

0.1

µF

Decoupling for DVDD.

C2

0.1

µF

Decoupling for AVDD.

C3

0.1

µF

High frequency decoupling between VRT and VRB.

C4

1

µF

Low frequency decoupling between VRT and VRB (non-polarised, optional).

C5

0.1

µF

Decoupling for VRB.

C6

0.1

µF

Decoupling for VRT.

C7

10

µF

Reservoir capacitor for DVDD.

C8

10

µF

Reservoir capacitor for AVDD.

Table 2 External Components Description