AK4388AET 데이터 시트보기 (PDF) - Asahi Kasei Microdevices

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AK4388AET

192kHz 24-Bit 2ch ΔΣDAC

Asahi Kasei Microdevices 

[AK4388A]

LRCK

BICK

(64fs)

SDTI

Mode 2

01

2

22 23 24

30 31 0 1

2

23 22

1 0 Don’t care

23:MSB, 0:LSB

Lch Data

23 22

Figure 6. Mode 2 Timing

22 23 24

30 31 0 1

1 0 Don’t care

Rch Data

23 22

LRCK

BICK

(64fs)

SDTI

Mode 3

0123

23 24 25

31 0 1 2 3

23 22

1 0 Don’t care

23 22

23:MSB, 0:LSB

Lch Data

Figure 7. Mode 3 Timing

23 24 25

31 0 1

1 0 Don’t care

23

Rch Data

■ De-emphasis Filter

A digital de-emphasis filter is built-in (tc = 50/15µs). The DEM pin is internal pull-down pin. The digital de-emphasis

filter is enabled by setting the DEM pin to “H”. Refer to “FILTER CHARACTERISTICS” regarding the gain error when

the de-emphasis filter is enabled. In case of double speed mode (MCLK=256fs/384fs) and quad speed mode

(MCLK=128fs/192fs), the digital de-emphasis filter is always off.

DEM pin De-emphasis Filter

1

ON

0

OFF

(default)

Table 6. De-emphasis Filter Control (Normal Speed Mode)

MS1008-E-02

- 10 -

2010/09

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