AK4953A Datasheet, PDF (13/96 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/HP/SPK-AMP

[AK4953A]
DAC FILTER CHARACTERISTICS (fs=44.1kHz)
(Ta =25°C; AVDD=2.85 ~ 3.5V, DVDD =1.6 ∼ 2.0V, TVDD=DVDD ~ 3.5V, SVDD=0.9 ∼ 5.5V; DEM=OFF)
Parameter
Symbol
min
typ
max
Units
DAC Digital Filter (LPF):
Passband (Note 29)
±0.05dB
PB
−6.0dB
0
-
20.0
kHz
-
22.05
-
kHz
Stopband
SB
24.1
-
-
kHz
Passband Ripple
PR
-
-
±0.05
dB
Stopband Attenuation
SA
54
-
-
dB
Group Delay (Note 30)
GD
-
22
-
1/fs
DAC Digital Filter (LPF) + SCF:
Frequency Response: 0 ∼ 20.0kHz
FR
-
±1.0
-
dB
DAC FILTER CHARACTERISTICS (fs=96kHz)
(Ta =25°C; AVDD=2.85 ~ 3.5V, DVDD =1.6 ∼ 2.0V, TVDD=DVDD ~ 3.5V, SVDD=0.9 ∼ 5.5V; DEM=OFF)
Parameter
Symbol
min
typ
max
Units
DAC Digital Filter (LPF):
Passband (Note 29)
±0.05dB
PB
0
-
43.5
kHz
−6.0dB
-
48.0
-
kHz
Stopband
SB
52.5
-
-
kHz
Passband Ripple
PR
-
-
±0.05
dB
Stopband Attenuation
SA
54
-
-
dB
Group Delay (Note 30)
GD
-
22
-
1/fs
DAC Digital Filter (LPF) + SCF:
Frequency Response: 0 ∼ 40.0kHz
FR
-
±1.0
-
dB
Note 29. The passband and stopband frequencies scale with fs (system sampling rate). Each response refers to that of
1kHz.
Note 30. A calculating delay time which induced by digital filtering. This time is from setting the 24bit data of both
channels to input register to the output of analog signal. For the signal through the programmable filters (First
HPF + First LPF + 4-band Equalizer + ALC + Equalizer), the group delay is increased 7/fs from the value above
if there is no phase change by the IIR filter.
MS1252-E-00
- 13 -
2010/10