AK7735EQ Datasheet, PDF (27/142 Pages) Asahi Kasei Microsystems – Dual DSP with 4chADC + 4chDAC + 4chSRC

4. Short Delay Slow Roll-Off Filter (DASD bit = “1”, DASL bit = “1”)
fs=48kHz
Parameter
SHORT DELAY SLOW ROLL-OFF
Passband * 33
0.05dB
3.0dB
Passband Ripple * 28
Stopband * 33
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
-0.05
41.5
82.0
-4.8
Typ.
21.1
5.3
Max.
12.0
0.05
0.1
fs=96kHz
Parameter
SHORT DELAY SLOW ROLL-OFF
Passband * 33
0.05dB
3.0dB
Passband Ripple * 28
Stopband * 33
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
-0.05
83.0
82.0
-5.0
Typ.
42.1
5.3
Max.
24.2
0.05
0.1
fs=192kHz
Parameter
Symbol
Min.
Typ.
Max.
SHORT DELAY SLOW ROLL-OFF
Passband * 33
0.05dB
PB
3.0dB
PB
0
48.4
84.3
Passband Ripple * 28
PR
-0.05
0.05
Stopband * 33
SB
165.9
Stopband Attenuation * 30, * 31
SA
82.0
Group Delay * 29
GD
5.3
Digital Filter + SCF + SMF * 30
Frequency Response : 0  80.0kHz
-5.7
0.1
Note
* 33. The passband and stopband frequencies are proportional to fs (sampling rate).
“PB = 0.252  fs, SB = 0.864  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
- 27 -
2016/12