AsahiKASEI AK4493, Manual

Page: 23 / 104

[AK4493]
017012230-E-00 2017/12
- 23 -
■
Low Dispersion Short Delay Filter Characteristics
Low Dispersion Short Delay Filter Characteristics (fs = 44.1kHz)
(Ta = -40 ~ 85

C; VDDL/R = 4.75

5.25V, AVDD = TVDD = 1.7

3.6V, DVDD = 1.7 ~ 1.98V;
Normal Speed Mode; DEM = OFF; SD bit =
“1” or SD pin = “H”, SLOW bit = “X” or SLOW pin = “X”,
SSLOW bit =
“1” or SSLOW pin = “H”)
Parameter Symbol Min. Typ. Max. Unit
Digital Filter
Frequency Response
(
Note 26 )

0.05dB

6.0dB
-
- 0
-
-
22.05
18.4
-
kHz
kHz
Passband ( Note 32 ) PB 0 - 18.4 kHz
Stopband ( Note 32 ) SB 25.7 - - kHz
Passband Ripple ( Note 28 ) PR - -

0.05 dB
Stopband Attenuation ( Note 26 ) SA 80 - - dB
Group Delay ( Note 29 ) GD - 10.0 - 1/fs
Group Delay Distortion
Δ
GD -
±
0.035 - 1/fs
Digital SCF ( Note 26 )
Frequency Response: 0

20.0kHz -0.8 - +0.1 dB
Low Dispersion Short Delay Filter Characteristics (fs = 96kHz)
(Ta = -40 ~ 85

C; VDDL/R = 4.75

5.25V, AVDD = TVDD = 1.7

3.6V, DVDD = 1.7 ~ 1.98V;
Double Speed Mode; DEM = OFF; SD bit =
“1” or SD pin = “H”, SLOW bit = “X” or SLOW pin = “X”,
SSLOW bit =
“1” or SSLOW pin = “H”)
Parameter Symbol Min. Typ. Max. Unit
Digital Filter
Frequency Response
(
Note 26 )

0.05dB

6.0dB
-
- 0
-
-
48.0
40.1
-
kHz
kHz
Passband ( Note 32 ) PB 0 - 40.1 kHz
Stopband ( Note 32 ) SB 55.9 - - kHz
Passband Ripple ( Note 28 ) PR - -

0.05 dB
Stopband Attenuation ( Note 26 ) SA 80 - - dB
Group Delay ( Note 29 ) GD - 10.0 - 1/fs
Group Delay Distortion
Δ
GD -
±
0.035 - 1/fs
Digital SCF ( Note 26 )
Frequency Response: 0

40.0kHz -0.6 - +0.1 dB
Low Dispersion Short Delay Filter Characteristics (fs = 192kHz)
(Ta = -40 ~ 85

C; VDDL/R = 4.75

5.25V, AVDD = TVDD = 1.7

3.6V, DVDD = 1.7 ~ 1.98V;
Quad Speed Mode; DEM = OFF; SD bit =
“1” or SD pin = “H”, SLOW bit = “X” or SLOW pin = “X”, SSLOW
bit =
“1” or SSLOW pin = “H”)
Parameter Symbol Min. Typ. Max. Unit
Digital Filter
Frequency Response
(
Note 26 )

0.05dB

6.0dB
-
- 0
-
-
98.0
80.2
-
kHz
kHz
Passband ( Note 32 ) PB 0 - 80.2 kHz
Stopband ( Note 32 ) SB 111.8 - - kHz
Passband Ripple ( Note 28 ) PR - -

0.05 dB
Stopband Attenuation ( Note 26 ) SA 80 - - dB
Group Delay ( Note 29 ) GD - 10.0 - 1/fs
Group Delay Distortion
Δ
GD -
±
0.035 - 1/fs
Digital SCF ( Note 26 )
Frequency Response: 0

80.0kHz -2.0 - +0.1 dB
Note 320
.
The passband and stopband frequencies scale with fs.
For example, PB = 0.418

fs (@

0.05dB), SB = 0.582

fs.