ak7746 ETC-unknow, ak7746 Datasheet - Page 12

• Manufacturer Part Number: ak7746
• Description: Audio With 5-channel 24-bit Input
• Manufacturer: ETC-unknow

(4) Digital Filter Characteristics
1) ADC Section (ADC1, ADC2):
(Ta=25°C; AVDD, DVDD =3.0V~3.6V; fs=48 kHz; HPF=off (Note1))
Digital filter
Pass band
Stop band
Pass band ripple
Stop band attenuation
Group delay distortion
Group delay
Digital filter + SFC
Amplitude characteristics (0~20.0kHz)
Note 1) HPF response is not included
Note 2) The passband is from DC to 21.5 kHz when fs = 48 kHz.
Note 3) The stopband is from 26.5 kHz to 3.0455MHz when fs = 48 kHz.
Note 4) When fs = 48 kHz, the analog modulator samples the analog input at 3.072MHz. The input signal is not attenuated by
2) Monaural ADC Section (ADCM):
(Ta=25°C; AVDD, DVDD =3.0V~3.6V; fs=48 kHz; HPF=off (Note1))
Digital filter
Pass band
Stop band
Pass band ripple
Stop band attenuation
Group delay distortion
Group delay
Digital filter + SFC
Amplitude characteristics (0~20.0kHz)
Note 1) HPF response is not included
Note 2) The passband is from DC to 21.5 kHz when fs = 48 kHz.
Note 3) The stopband is from 26.5 kHz to 3.0455MHz when fs = 48 kHz.
Note 4) When fs = 48 kHz, the analog modulator samples the analog input at 3.072MHz. The input signal is not attenuated by
[MS0369-E00]
[ASAHI KASEI]
Values described below are design values cited as references.
the digital filter in the multiple bands (n x 3.072MHz ± 21.99kHz; n=0, 1, 2, 3...) of the sampling frequency.
the digital filter in the multiple bands (n x 3.072MHz ± 21.99kHz; n=0, 1, 2, 3...) of the sampling frequency.
Parameter
Parameter
(±0.005dB) Note 2)
(±0.005dB) Note 2)
(-0.02dB)
(-0.02dB)
(-6.0dB)
(-6.0dB)
(Ts=1/fs)
(Ts=1/fs)
(Note3,4)
(Note3,4)
(Note 2)
(Note 2)
Symbol
Symbol
∆GD
∆GD
GD
GD
PB
SB
PR
SA
PB
SB
PR
SA
- 12 -
26.5
26.5
min
min
80
80
0
0
-
-
-
-
21.768
21.768
24.00
±0.01
24.00
29.3
29.3
±0.1
typ
typ
±0.005
±0.005
max
21.5
max
21.5
0
0
-
-
-
-
[AK7746]
Unit
Unit
kHz
kHz
kHz
kHz
kHz
kHz
kHz
kHz
2004/12
dB
dB
dB
dB
dB
dB
Ts
Ts
us
us