AK5357_09 Datasheet, PDF (12/20 Pages) Asahi Kasei Microsystems – 24Bit 96kHz ΔΣ ADC

[AK5357]
LRCK
012
SCLK(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
SCLK(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 when the AK5357 is in operation, click
noise occurs by changing DC offset. It is recommended that HPF setting is changed when the PDN pin = “L”.
MS0294-E-03
- 12 -
2009/03