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AK4492ECB Datasheet, PDF (15/101 Pages) Asahi Kasei Microsystems – Quality Oriented 32-Bit 2ch DAC | |||
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[AK4492]
â Sharp Roll-Off Filter Characteristics
Sharp Roll-Off Filter Characteristics (fs=44.1kHz)
(Ta = -40~85 ï°C; VDDL/R = 4.75ï¾5.25 V, AVDD = TVDD = (DVDD) ï¾ 3.6 V, DVDD = 1.7 ~ 1.98 V; Normal
Speed Mode; DEM = OFF; SD bit or SD pin = â0â, SLOW bit or SLOW pin = â0â, SSLOW bit or SSLOW pin
=â0â)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Digital Filter
Frequency
ï±0.01 dB
-
0
20.0
kHz
Response
ï6.0 dB (Note 26)
-
-
22.05
-
kHz
Passband
(Note 27)
PB
0
20.0
kHz
Stopband
(Note 27)
SB
24.1
kHz
Passband Ripple
(Note 28)
PR
ï±0.005
dB
Stopband Attenuation
(Note 26)
SA
100
dB
Group Delay
(Note 29) GD
-
29.2
-
1/fs
Digital Filter + SCF (Note 26)
Frequency Response: 0 ï¾ 20.0 kHz
-0.7
-
+0.1
dB
Sharp Roll-Off Filter Characteristics (fs=96kHz)
(Ta = -40 ~ 85 ï°C; VDDL/R = 4.75ï¾5.25 V, AVDD = TVDD = (DVDD) ï¾ 3.6V, DVDD = 1.7~1.98V; Double
Speed Mode; DEM = OFF; SD bit or SD pin = â0â, SLOW bit or SLOW pin = â0â, SSLOW bit or SSLOW pin
= â0â)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Digital Filter
Frequency
ï±0.01dB
-
0
43.5
kHz
Response
ï6.0 dB (Note 26)
-
-
48.0
-
kHz
Passband
(Note 27)
PB
0
43.5
kHz
Stopband
(Note 27)
SB
52.5
kHz
Passband Ripple
(Note 28)
PR
ï±0.005
dB
Stopband Attenuation
(Note 26)
SA
100
dB
Group Delay
(Note 29) GD
-
29.2
-
1/fs
Digital Filter + SCF (Note 26)
Frequency Response: 0 ï¾ 40.0 kHz
-1.9
-
+0.1
dB
Sharp Roll-Off Filter Characteristics (fs=192kHz)
(Ta = -40 ~ 85 ï°C; VDDL/R = 4.75ï¾5.25 V, AVDD = TVDD = (DVDD) ï¾ 3.6 V, DVDD = 1.7~1.98 V; Quad
Speed Mode; DEM = OFF; SD bit or SD pin = â0â, SLOW bit or SLOW pin = â0â, SSLOW bit or SSLOW pin
= â0â)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Digital Filter
Frequency
ï±0.01 dB
-
0
87.0
kHz
Responce
ï6.0 dB (Note 26)
-
-
96.0
-
kHz
Passband
(Note 27) PB
0
87.0
kHz
Stopband
(Note 27)
SB
104.9
kHz
Passband Ripple
(Note 28)
PR
ï±0.005
dB
Stopband Attenuation
(Note 26)
SA
100
dB
Group Delay
(Note 29) GD
-
29.2
-
1/fs
Digital Filter + SCF (Note 26)
Frequency Response: 0 ï¾ 80.0kHz
-5.0
-
+0.1
dB
Note 26. Frequency response refers to the output level (0dB) of a 1kHz, 0dB sine wave input.
Note 27. The passband and stopband frequencies scale with fs. For example, PB=0.4535Ãfs (@ï±0.01dB),
SB=0.546Ãfs.
Note 28. The first stage of the Interpolator. This is a passband gain amplitude of the 4 times oversampling
filter.
Note 29. The calculating delay time which occurred by digital filtering. This time is from setting the
16/20/24/32 bit data of both channels to the output of analog signal.
016011073-E-00
- 15 -
2016/12
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