AK4523VF Просмотр технического описания (PDF) - Asahi Kasei Microdevices

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AK4523VF

20Bit Stereo ΔΣ ADC & DAC

Asahi Kasei Microdevices 

ASAHI KASEI

[AK4523]

LRCK(i)

012

SCLK(i:64fs)

17 18 19 20 21

01 2

17 18 19 20 21

01

SDTO(o)

19 18

3 210

19 18

3210

19

SDTI(i)

19 18

3210

19:MSB, 0:LSB

Lch Data

Don’t Care

23 22

32 10

Don’t Care 19

Rch Data

Figure 3. Mode 2 Timing

LRCK(i)

0 1 23

SCLK(i:32fs)

SDTO(o)

SDTI(i)

4 19 18

0 1 23

SCLK(i:64fs)

9 10 11 12 13 14 15 0 1 2

12 11 10 9 8 7 6 5 4 19 18

17 18 19 20 21

31 0 1 2 3

9 10 11 12 13 14 15 0 1

12 11 10 9 8 7 6 5 4

17 18 19 20 21

31 0 1

SDTO(o)

19 18

4 32 10

19 18

43 2 10

SDTI(i)

19 18

4 3 2 1 0 Don’t Care 19 18

19:MSB, 0:LSB

Lch Data

Figure 4. Mode 3 Timing

4 3 2 1 0 Don’t Care

Rch Data

n Digital High Pass Filter

The ADC of AK4523 has a digital high pass filter for DC offset cancel. The cut-off frequency of the HPF is 0.9Hz at

fs=44.1kHz and also scales with sampling rate (fs).

M0021-E-03

- 12 -

1999/12

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