AK4558EN Datasheet, PDF (16/94 Pages) Asahi Kasei Microsystems – 108dB 216kHz 32Bit CODEC with PLL

[AK4558]
12. DAC Filter Characteristics (fs=48kHz)
(Ta= -40  +105C; AVDD =2.4 3.6V, TVDD=1.7 3.6V)
Parameter
Symbol
Min.
Typ.
Max. Unit
DAC Digital Filter (LPF): Sharp roll-off mode(DEM=OFF; SLDA bit=“0”; SDDA bit=“0”)
Passband
Stopband
(Note 15) ±0.05dB
6.0dB
PB
0
-
21.8 kHz
-
24.0
-
kHz
SB
26.2
-
-
kHz
Passband Ripple
PR
-0.0032
0.0032 dB
Stopband Attenuation
Group Delay
(Note 17)
SA
80
-
-
dB
GD
-
27.8
-
1/fs
DAC Digital Filter + Analog Filter:
Frequency Response 0 ~ 20.0kHz (Note 18)
FR
-0.3
-
0.2
dB
DAC Digital Filter (LPF): Short delay Sharp roll-off mode (DEM=OFF; SLDA bit=“0” ; SDDA
bit=“1”)
Passband
Stopband
(Note 15) ±0.05dB
6.0dB
PB
0
-
21.8 kHz
-
24.0
-
kHz
SB
26.2
-
-
kHz
Passband Ripple
PR
-0.0031
0.0031 dB
Stopband Attenuation
Group Delay
SA
(Note 17)
GD
80
-
-
6.8
-
dB
-
1/fs
DAC Digital Filter + Analog Filter:
Frequency Response 0 ~ 20.0kHz (Note 18)
FR
-0.4
0.3
dB
DAC Digital Filter (LPF): Slow roll-off mode(DEM=OFF; SLDA bit=“1” ; SDDA bit=“0”)
Passband
(Note 16) ±0.07dB
PB
0
8.8
kHz
3.0dB
-
19.7
-
kHz
Stopband
SB
42.6
kHz
Passband Ripple
PR
-0.043
0.043 dB
Stopband Attenuation
SA
73
dB
Group Delay
(Note 17)
GD
-
7.3
-
1/fs
DAC Digital Filter + Analog Filter:
Frequency Response 0 ~ 20.0kHz (Note 18)
FR
-5
-
0.1
dB
DAC Digital Filter (LPF): Short delay Slow roll-off mode(DEM=OFF; SLDA bit=“1” ; SDDA bit=“1”)
Passband
Stopband
(Note 16) ±0.07dB
PB
3.0dB
SB
0
-
12.1 kHz
-
24.3
-
kHz
41.5
-
-
kHz
Passband Ripple
PR
-0.05
0.05
dB
Stopband Attenuation
SA
Group Delay
(Note 17)
GD
82
-
-
5.8
-
dB
-
1/fs
DAC Digital Filter + Analog Filter:
Frequency Response 0 ~ 20.0kHz (Note 18)
FR
-5
0.1
dB
Note 15. The passband and stopband frequencies scale with fs (sampling frequency).
For example, Passband (0.06dB) = 0.454 x fs (@ fs=48kHz).
Note 16. The passband and stopband frequencies scale with fs (sampling frequency).
For example, Passband (0.06dB) = 0.204 x fs (@ fs=48kHz).
Note 17. The calculated delay time is resulting from digital filtering. For the DAC, this is the time from the
input of MSB for L channel of SDTI to the output of an analog signal. The error of the delay at
audio interface is within +1[1/fs].
Note 18. The reference frequency is 1kHz.
015004500-E-02
- 16 -
2015/09