XWM8733ED データシートの表示（PDF） - Wolfson Microelectronics plc

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XWM8733ED

102dB Stereo DAC

Wolfson Microelectronics plc 

WM8733

RECOMMENDED EXTERNAL COMPONENTS

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FROM AUDIO

PROCESSOR

ANALOGUE

OUTPUT FOR

RIGHT

CHANNEL

10µF +

External

LPF

1 LRCIN

2 DIN

3 BCKIN

4 SEL0

5 CAP

6 VOUTR

7 GND

SCKI 14

256fs/384fs/512fs CLK

FORMAT 13

WM8733

DEEMPH 12

SEL1 11

MUTE 10

VOUTL 9

VDD 8

(diode allows automute operation)

External

LPF

ANALOGUE

OUTPUT FOR

LEFT CHANNEL

GND

10µF

VDD

0.1µF

Figure 5 Applications Diagram

DETAIL OF APPLICATION DIAGRAM SHOWING THE EXTERNAL LOW POWER FILTER

External LPF

x2 for Stereo Operation

+ 10kΩ

Vin

-

10kΩ

680pF

1500pF

10kΩ

-

+

100pF

Filtered

Analogue

Output

Figure 6 Third-Order Low Pass Filter (LPF) Example

An external low pass filter is recommended if the device is driving a wide band amplifier, as shown in

Figure 6. In some applications, second-order or passive RC filter may be adequate.

WOLFSON MICROELECTRONICS LTD

PP Rev 1.3 July 2000

10

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