AK4366_04 Datasheet, PDF (7/31 Pages) Asahi Kasei Microsystems – Low Power 24-Bit 2ch DAC with HP-AMP

ASAHI KASEI
[AK4366]
FILTER CHARACTERISTICS
(Ta=25°C; VDD, HVDD=2.2 ∼ 3.6V; fs=44.1kHz; De-emphasis = “OFF”)
Parameter
Symbol
min
typ
max
Units
DAC Digital Filter: (Note 8)
Passband
−0.05dB (Note 9)
PB
0
-
20.0
kHz
−6.0dB
-
22.05
-
kHz
Stopband
(Note 9)
SB
24.1
-
-
kHz
Passband Ripple
PR
-
-
±0.02
dB
Stopband Attenuation
SA
54
-
-
dB
Group Delay
(Note 10)
GD
-
20.8
-
1/fs
Group Delay Distortion
∆GD
-
0
-
µs
DAC Digital Filter + Analog Filter: (Note 8) (Note 11)
Frequency Response 0 ∼ 20.0kHz
FR
-
±0.5
-
dB
BOOST Filter: (Note 11) (Note 12)
Frequency Response
20Hz
FR
-
5.76
-
dB
MIN 100Hz
-
2.92
-
dB
1kHz
-
0.02
-
dB
20Hz
FR
-
10.80
-
dB
MID 100Hz
-
6.84
-
dB
1kHz
-
0.13
-
dB
20Hz
FR
-
16.06
-
dB
MAX 100Hz
-
10.54
-
dB
1kHz
-
0.37
-
dB
Note 8. BOOST OFF (BST1-0 bit = “00”)
Note 9. The passband and stopband frequencies scale with fs.
For example, PB=0.4535*fs(@±0.05dB), SB=0.546*fs(@−54dB).
Note 10. This is the calculated delay time caused by digital filtering. This time is measured from the setting of the 24bit
data of both channels to the input registers to the output of the analog signal.
Note 11. DAC Æ HPL, HPR
Note 12. These frequency responses scale with fs. If high-level signal is input, the AK4366 clips at low frequency.
20
MAX
15
MID
10
MIN
5
0
-5
10
Boost Filter (fs=44.1kHz)
100
1000
Frequency [Hz]
Figure 2. Boost Frequency (fs=44.1kHz)
10000
MS0248-E-01
-7-
2004/03