AK5381 Datasheet, PDF (13/20 Pages) Asahi Kasei Microsystems – 24Bit 96kHz ΔΣ ADC

ASAHI KASEI
[AK5381]
LRCK
012
BICK(64fs)
20 21 22 23 24
31 0 1 2
SDTO(o)
23 22
43210
23 22
23:MSB, 0:LSB
Lch Data
Figure 1. Mode 0 Timing
20 21 22 23 24
43210
Rch Data
31 0 1
23
LRCK
0123
BICK(64fs)
21 22 23 24 25
012
21 22 23 24 25
01
SDTO(o)
23 22
43210
23 22
23:MSB, 0:LSB
Lch Data
Figure 2. Mode 1 Timing
43210
Rch Data
„ Digital High Pass Filter
The ADC has a digital high pass filter for DC offset cancellation. The cut-off frequency of the HPF is 1.0Hz
(@fs=48kHz) and scales with sampling rate (fs).
HPF is controlled by CKS2-0 pins (Table 2). If HPF setting (ON/OFF) is changed at operating, click noise occurs by
changing DC offset. It is recommended that HPF setting is changed at PDN pin = “L”.
MS0200-E-02
- 13 -
2006/01