AK4584_01 Datasheet, PDF (10/53 Pages) Asahi Kasei Microsystems – 24Bit 96kHz Audio CODEC with DIT/DIR

ASAHI KASEI
[AK4584]
FILTER CHARACTERISTICS
(Ta=−10 ∼ 70°C; AVDD, DVDD, PVDD=4.75 ∼ 5.25V; TVDD=2.7 ∼ 5.25V; fs=44.1kHz; DEM=OFF)
Parameter
Symbol
min
typ
max
ADC Digital Filter (Decimation LPF):
Passband
(Note 9) ±0.005dB
PB
0
19.76
-0.02dB
-
20.02
-
-0.06dB
-
20.20
-
-6.0dB
-
22.05
-
Stopband
Passband Ripple
SB
24.34
PR
±0.005
Stopband Attenuation
SA
80
Group Delay
(Note 10)
GD
31
Group Delay Distortion
∆GD
0
ADC Digital Filter (HPF):
Frequency Response (Note 9) -3dB
FR
0.9
-0.5dB
2.7
-0.1dB
6.0
DAC Digital Filter:
Passband
(Note 9) ±0.01dB
PB
-6.0dB
0
20.0
-
22.05
-
Stopband
Passband Ripple
SB
24.1
PR
±0.005
Stopband Attenuation
SA
75
Group Delay
(Note 10)
GD
30
DAC Digital Filter + SCF + SMF:
Frequency Response:
FR
0 ∼ 20.0kHz
−0.1
∼ 40kHz (Note 11)
−0.2
∼ 80kHz (Note 12)
−1.0
Units
kHz
kHz
kHz
kHz
kHz
dB
dB
1/fs
µs
Hz
Hz
Hz
kHz
kHz
kHz
dB
dB
1/fs
dB
dB
dB
Note: 9. The passband and stopband frequencies scale with fs. For example, 20.02kHz at −0.02dB is 0.454 x fs.
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.
For DAC, this time is from setting the 24bit data of both channels on DAC input register to the output of an
analog signal.
Note: 11. fs = 96kHz.
Note: 12. fs = 192kHz.
MS0118-E-00
- 10 -
2001/11