AK7600 Datasheet, PDF (7/38 Pages) Asahi Kasei Microsystems – 2/6-Channel Audio CODEC with Digital EQ

[AK7600]
FILTER CHARACTERISTICS
(Ta= -40 ∼ +85°C; AVDD=4.5∼ 5.5V, DVDD=4.5∼ 5.5V)
Parameter
Symbol
min
ADC Digital Filter (Decimation LPF):
Passband
(Note 9) ±0.1dB
PB
0
−0.2dB
-
−3.0dB
-
Stopband
(Note 9)
SB
25.7
Passband Ripple
PR
-
Stopband Attenuation
Group Delay Distortion
SA
68
ΔGD
-
Group Delay
(Note 10)
GD
-
ADC Digital Filter (HPF):
Frequency Response (Note 9) −3dB
FR
-
−0.1dB
-
DAC Digital Filter (LPF):
Passband
(Note 9) ±0.06dB
PB
0
−6.0dB
-
Stopband
(Note 9)
SB
24.1
Passband Ripple
PR
-
Stopband Attenuation
SA
54
Group Delay Distortion
ΔGD
-
Group Delay
(Note 10)
GD
-
DAC Digital Filter + Analog Filter:
Frequency Response (Note 11) 20~20kHz
FR
-
typ
-
18.3
21.1
-
-
-
0
16
0.86
5.9
-
22.05
-
-
-
0
20
±0.1
max
17.3
-
-
-
±0.04
-
-
-
-
-
20.0
-
-
±0.02
-
-
-
-
Units
kHz
kHz
kHz
kHz
dB
dB
μs
1/fs
Hz
Hz
kHz
kHz
kHz
dB
dB
μs
1/fs
dB
Note 9. The passband and stopband frequencies scale with fs (system sampling rate). For example, when fs= 44.1kHz,
DAC is PB=0.45412*fs (@±0.06dB).
Note 10. The calculated delay time induced by digital filtering. This time is from the input of an analog signal to the
setting of 24bit data both channels to the ADC output register for ADC. This time is from the set of 24bit data to
the input registers to the output of analog signal for DAC.
Note 11. The reference frequency of these responses is 1kHz.
MS0999-E-00
-7-
2008/09