AK7735EQ Datasheet, PDF (25/142 Pages) Asahi Kasei Microsystems – Dual DSP with 4chADC + 4chDAC + 4chSRC

2. Slow Roll-Off Filter (DASD bit = “0”, DASL bit = “1”)
fs=48kHz
Parameter
SLOW ROLL-OFF
Passband * 32
0.05dB
3.0dB
Passband Ripple * 28
Stopband * 32
Stopband Attenuation * 30, * 31
Group Delay * 29
Digital Filter + SCF + SMF * 30
Frequency Response : 0  20.0kHz
Symbol
PB
PB
PR
SB
SA
GD
Min.
0
-0.043
42.7
73.0
-5.0
Typ.
19.8
6.8
Max.
8.8
0.043
0.1
fs=96kHz
Parameter
SLOW ROLL-OFF
Passband * 32
0.05dB
3.0dB
Passband Ripple * 28
Stopband * 32
Stopband Attenuation * 30, * 31
Group Delay * 29
Digital Filter + SCF + SMF * 30
Frequency Response : 0  40.0kHz
Symbol
PB
PB
PR
SB
SA
GD
Min.
0
-0.043
85.3
73.0
-5.2
Typ.
39.5
6.8
Max.
17.7
0.043
0.1
fs=192kHz
Parameter
Symbol
Min.
Typ.
Max.
SLOW ROLL-OFF
Passband * 32
0.05dB
PB
3.0dB
PB
0
35.5
79.0
Passband Ripple * 28
PR
-0.043
0.043
Stopband * 32
SB
171.0
Stopband Attenuation * 30, * 31
SA
73.0
Group Delay * 29
GD
6.8
Digital Filter + SCF + SMF * 30
Frequency Response : 0  80.0kHz
-5.9
0.1
Note
* 32. The passband and stopband frequencies are proportional to fs (sampling rate).
“PB = 0.185  fs, SB = 0.888  fs”
[AK7735]
Unit
kHz
kHz
dB
kHz
dB
1/fs
dB
Unit
kHz
kHz
dB
kHz
dB
1/fs
dB
Unit
kHz
kHz
dB
kHz
dB
1/fs
dB
016014707-E-00
- 25 -
2016/12