AK5572 Datasheet, PDF (12/68 Pages) Asahi Kasei Microsystems – 2-Channel Differential 32-bit ADC

[AK5572]
■ ADC Filter Characteristics (fs= 96 kHz)
(Ta= 40 - +105 C; AVDD= 4.75-5.25 V, TVDD=1.7-1.98 V (LDOE pin=“L”) or 3.0-3.6 V (LDOE pin=“H”),
VDD18= 1.7-1.98 V (LDOE pin= “L”))
Parameter
Symbol
Min.
Typ.
Max.
Unit
Digital Filter (Decimation LPF): SHARP ROLL-OFF (Figure 7)
(SD pin=“L”, SLOW pin= “L”)
Passband (Note 13) +0.001/0.06 dB
6.0 dB
PB
0
-
44.1
kHz
-
48.8
-
kHz
Stopband (Note 13)
SB
55.7
-
-
kHz
Stopband Attenuation
SA
85
-
-
dB
Group Delay Distortion 0 ~ 40.0 kHz
GD
-
0
-
1/fs
Group Delay (Note 14)
GD
-
19
-
1/fs
Digital Filter (Decimation LPF): SLOW ROLL-OFF (Figure 8)
(SD pin=“L”, SLOW pin= “H”)
Passband (Note 13) +0.001/0.076 dB
6.0 dB
PB
0
-
25
kHz
-
43.8
-
kHz
Stopband (Note 13)
SB
73
-
-
kHz
Stopband Attenuation
SA
85
-
-
dB
Group Delay Distortion 0 ~ 40.0 kHz
GD
-
0
-
1/fs
Group Delay (Note 14)
GD
-
7
-
1/fs
Digital Filter (Decimation LPF): SHORT DELAY SHARP ROLL-OFF (Figure 9)
(SD pin=“H”, SLOW pin= “L”)
Passband (Note 13) +0.001/0.06 dB
PB
6.0 dB
0
-
44.1
kHz
-
48.8
-
kHz
Stopband (Note 13)
SB
55.7
-
-
kHz
Stopband Attenuation
SA
85
-
-
dB
Group Delay Distortion 0 ~ 40.0 kHz
GD
-
-
2.8
1/fs
Group Delay (Note 14)
GD
-
5
-
1/fs
Digital Filter (Decimation LPF): SHORT DELAY SLOW ROLL-OFF (Figure 10)
(SD pin=“H”, SLOW pin= “H”)
Passband (Note 13) +0.001/0.076 dB
PB
6.0 dB
0
-
25
kHz
-
43.8
-
kHz
Stopband (Note 13)
SB
73
-
-
kHz
Stopband Attenuation
SA
85
-
-
dB
Group Delay Distortion 0 ~ 40.0 kHz
GD
-
-
1.2
1/fs
Group Delay (Note 14)
GD
-
5
-
1/fs
Digital Filter (HPF):
Frequency Response
(Note 13)
3.0 dB
0.5 dB
0.1 dB
-
1.0
-
Hz
FR
-
2.5
-
Hz
-
6.5
-
Hz
Note 13. The passband and stopband frequencies scale with fs.
For example, PB (+0.001 dB/0.06 dB) = 0.46  fs (SHARP ROLL-OFF).
For example, PB (+0.001 dB/0.076 dB) = 0.26  fs (SLOW ROLL-OFF).
Note 14. The calculated delay time induced by digital filtering. This time is from the input of an analog
signal to the L channel MSB output timing of the SDTO. It may have an error of +1[1/fs] at
maximum when outputting data via audio interfaces.
015016766-E-00
- 12 -
2015/12