AK4520A Datasheet, PDF (6/19 Pages) Asahi Kasei Microsystems – 100dB 20Bit Stereo ADC & DAC

ASAHI KASEI
[AK4520A]
Parameter
min
typ
max
Units
Power supply Current VA=VD=5V
Analog AD+DA
PWAD="H",PWDA="H"
41
62
mA
VA
AD
PWAD="H",PWDA="L"
17
26
mA
DA
PWAD="L",PWDA="H"
25
38
mA
Digital
AD+DA
PWAD="H",PWDA="H"
10
15
mA
VD
AD
PWAD="H",PWDA="L"
6
9
mA
(Note 8 ) DA
PWAD="L",PWDA="H"
4
6
mA
VA+VD Power down PWAD="L",PWDA="L"
0.2
0.4
mA
Note:8 The typical supply current of VD drops to AD+DA=5.5mA, AD=3.5mA, DA=2mA at 3.0V supply
voltage.
FILTER CHARACTERISTICS
(Ta=25°C; VA,VD=2.7∼5.5V; fs=44.1kHz; DEM0="1", DEM1="0")
Parameter
Symbol
min
typ
max
Units
ADC Digital Filter(Decimation LPF):
Passband (Note 9 )
-0.005dB
PB
0
19.76
kHz
-0.02dB
0
20.02
kHz
-0.06dB
0
20.20
kHz
-6.0dB
0
22.05
kHz
Stopband
SB
24.34
kHz
Passband Ripple
PR
±0.005
dB
Stopband Attenuation
SA
80
dB
Group Delay
(Note 10 )
GD
29.3
1/fs
Group Delay Distortion
∆GD
0
us
ADC Digital Filter(HPF):
Frequency Response (Note 9 ) -3dB
FR
0.9
Hz
-0.5dB
2.7
Hz
-0.1dB
6.0
Hz
DAC Digital Filter:
Passband (Note 9 )
-0.06dB
PB
0
20.0
kHz
-6.0dB
0
22.05
kHz
Stopband
SB
24.1
kHz
Passband Ripple
PR
±0.06
dB
Stopband Attenuation
SA
43
dB
Group Delay
(Note 10 )
GD
14.7
1/fs
DAC Digital Filter+Analog Filter:
Frequency Response 0∼20.0kHz
FR
±0.1
dB
Notes: 9. The Passband and stopband frequencies scale with fs. For example, 20.02kHz at -0.02dB is
0.454 x fs.
10. The calculating delay time which occurred by digital filtering. This time is from the input of analog
signal to setting the 20bit data of both channels to the output register for ADC.
For DAC, this time is from setting the 20bit data of both channels on input register to the output of
analog signal.
0163-E-00
-6-
1997/3