AK4524_12 Datasheet, PDF (7/32 Pages) Asahi Kasei Microsystems – 24Bit 96kHz Audio CODEC

[AK4524]
Parameter
Power Supplies
Power Supply Current
Normal Operation ( PD = “H”)
VA
VD+VT
(fs=44.1kHz)
(fs=96kHz)
Power-down mode ( PD = “L”)
(Note 6)
VA
VD+VT
min
typ
max
Unit
30
45
mA
16
24
mA
24
36
mA
10
100
μA
10
100
μA
Note: 6. XTALE=“L” and all digital input pins are held VD or DGND.
FILTER CHARACTERISTICS
(Ta=25°C; VA, VD=4.75 ∼ 5.25V; VT=2.7 ∼ 5.25V; fs=44.1kHz; DEM=OFF)
Parameter
Symbol
min
typ
max
Unit
ADC Digital Filter (Decimation LPF):
Passband
(Note 7) −0.005dB
PB
−0.02dB
−0.06dB
−6.0dB
0
19.76
kHz
-
20.02
-
kHz
-
20.20
-
kHz
-
22.05
-
kHz
Stopband
SB
24.34
kHz
Passband Ripple
PR
±0.005
dB
Stopband Attenuation
SA
80
dB
Group Delay
(Note 8)
GD
31
1/fs
Group Delay Distortion
ΔGD
0
μs
ADC Digital Filter (HPF):
Frequency Response (Note 7) −3dB
FR
0.9
Hz
−0.5dB
2.7
Hz
−0.1dB
6.0
Hz
DAC Digital Filter:
Passband
(Note 7) −0.01dB
PB
−6.0dB
0
20.0
kHz
-
22.05
-
kHz
Stopband
SB
24.1
kHz
Passband Ripple
PR
±0.005
dB
Stopband Attenuation
SA
75
dB
Group Delay
(Note 8)
GD
30
1/fs
DAC Digital Filter + SCF:
Frequency Response:
FR
0 ∼ 20.0kHz
±0.2
dB
∼ 40kHz (Note 9)
±0.3
dB
Note: 7. The passband and stopband frequencies scale with fs. For example, 20.02kHz at −0.02dB is 0.454 x fs.
The reference frequency of these responses is 1kHz.
8. The calculating delay time which occurred by digital filtering. This time is from the input of analog signal to
setting the 24bit data of both channels to the output register for ADC.
For DAC, this time is from setting the 24bit data of both channels on input register to the output of analog
signal.
9. fs=96kHz.
M0050-E-04
-7-
2012/01