Production Data

WM8721 / WM8721L

w

PD Rev 4.0 November 2004

35

RECOMMENDED EXTERNAL COMPONENTS

WM8721

DAC

RHPOUT

VMID

LOUT

+

10µF

47kΩ

100Ω

9

LHPOUT

+

47kΩ

220µF

6

AVDD

AGND

11

12

3.3V

HPVDD

HPGND

8

5

3.3V

ROUT

+

10µF

47kΩ

100Ω

10

+

47kΩ

220µF

7

0.1µF

10µF

+

13

DACLRC

DACDAT

DBVDD

DCVDD

3.3V

DGND

1.5V - 3.3V

+

+

1

20

19

BCLK

2

Audio Serial Data I/F

4

3

3-wire or 2-wire

MPU Interface

3-wire Interface

2-wire Interface

SDIN

16

CSB

15

SCLK

17

MODE

14

10µF0.1µF

10kΩ

3.3V

MCLK

+

10µF

+

18

0.1µF

10µF

0.1µF

0.1µF10µF

Note

1. Where possible, it is recommended that NPO or COG type capacitors should be used for best performance.

2. The recommended external components are the same for both the QFN and SSOP packages.

Figure 34 External Components Diagram