ak7780 AKM Semiconductor, Inc., ak7780 Datasheet - Page 15

• Manufacturer Part Number: ak7780
• Description: 24bit 5ch Adc & Src + Audio Dsp
• Manufacturer: AKM Semiconductor, Inc.

(4) Digital Filter Characteristics
(Ta=-40°C~85°C; AVDD = DVDD =3.0V~3.6V; DVDD18=1.7V~2.0V; fs=48kHz;
Pass band (±0.005dB)
Stop band
Pass band ripple
Stop band attenuation
Group delay distortion
Group delay
Digital filter + SFC
Amplitude characteristics (20Hz~20.0kHz)
Note 21. Each parameter is related to the sampling frequency (fs). HPF response is not included.
Note 22. The pass band is from DC to 21.5kHz at fs = 48kHz.
Note 23. The stop band is from 26.5kHz to 3.0455MHz at fs = 48kHz.
Note 24. When fs = 48kHz, the analog modulator samples the analog input at 3.072MHz. The input signal is not
(Ta=-40°C~85°C; AVDD = DVDD =3.0V~3.6V; DVDD18=1.7V~2.0V; fs = 48 kHz;
Pass band (±0.005dB)
Stop band
Pass band ripple
Stop band attenuation
Group delay distortion
Group delay
Digital filter + SFC
Amplitude characteristics (20Hz~20.0kHz)
Note 25. Each parameter is related to the sampling frequency (fs). HPF response is not included.
Note 26. The pass band is from DC to 21.5kHz at fs = 48kHz.
Note 27. The stop band is from 26.5kHz to 3.0455MHz at fs = 48kHz.
Note 28. When fs = 48kHz, the analog modulator samples the analog input at 3.072MHz. The input signal is not
Note 29. VOL+ MUX path adds one additional Ts.
MS0581-E-00-PB
1) ADC Section: ADC1, ADC2
2) ADC Section ADCM
attenuated by the digital filter in multiple bands (n x 3.072MHz ± 21.99kHz; n=0, 1, 2, 3...) of the sampling
frequency.
attenuated by the digital filter in the multiple bands (n x 3.072MHz ± 21.99kHz; n=0, 1, 2, 3...) of the sampling
frequency.
(-0.02dB)
(-6.0dB)
(-0.02dB)
(-6.0dB)
(Ts=1/fs)
Parameter
Parameter
(Note
(Ts=1/fs)
(Note
(Note
(Note
27,
23,
(Note
22)
22)
(Note
(Note
Note
Note
28)
29)
26)
26)
24)
Symbol
ΔGD
Symbol
GD
SA
PB
SB
PR
ΔGD
GD
PB
SB
PR
SA
- 15 -
26.5
min
80
26.5
min
0
80
0
21.768
±0.01
21.768
24.00
Note
24.00
typ
±0.1
29
typ
29
Note
21)
25)
±0.005
max
21.5
±0.005
max
21.5
0
0
2007/09
[AK7780]
Unit
kHz
kHz
kHz
kHz
dB
dB
dB
Unit
μs
Ts
kHz
kHz
kHz
kHz
dB
dB
dB
Ts
μs