AK5558VN_16 Datasheet, PDF (17/70 Pages) Asahi Kasei Microsystems – 8-Channel Differential 32-bit ADC

[AK5558]
■ ADC Filter Characteristics (fs= 768 kHz)
(Ta= 40 - +105 C; AVDD= 4.5-5.5 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) (Figure 16)
(SD pin = “X”, SLOW pin = “X”) * It does not depend on the SD pin and SLOW pin.
Frequency Response
(Note 13)
0.1 dB
1.0 dB
3.0 dB
6.0 dB
-
26.25
-
kHz
FR
-
83.75
-
kHz
-
144.5
-
kHz
-
203.1
-
kHz
Stopband (Note 13)
SB
640.3
-
-
kHz
Stopband Attenuation
SA
85
-
-
dB
Group Delay Distortion 0 - 40.0 kHz
ΔGD
-
0
-
1/fs
Group Delay (Note 14)
GD
-
5
-
1/fs
Note 13. The Passband and Stopband Frequencies scale with fs.
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.
Figure 16. Frequency Response (fs= 768 kHz)
015099850-E-00
- 17 -
2016/03