AK7735EQ Datasheet, PDF (20/142 Pages) Asahi Kasei Microsystems – Dual DSP with 4chADC + 4chDAC + 4chSRC

[AK7735]
9. Digital Filter Characteristics
■ ADC Block
(Ta=-40 ~ 85C; AVDD=3.0~3.6V; LVDD=3.0~3.6V; TVDD=1.7~3.6V; VDD33=3.0~3.6V;
AVSS=DVSS1=DVSS2=DVSS3=0V)
1. Sharp Roll-Off Filter (ADSD bit = “0”, ADSL bit = “0”)
fs=48kHz
Parameter
Symbol
Min.
Typ.
SHARP ROLL-OFF
Passband * 25
0dB ~ -0.06dB
-3.0dB
PB
PB
0
23.7
Stopband * 25
SB
27.8
Stopband Attenuation
SA
85.0
Group Delay Distortion : 0Hz~20kHz
GD
0
Group Delay * 26
GD
20
ADC Digital Filter(HPF)
Frequency Response -3.0dB
FR
0.9
Max.
Unit
22.1
kHz
kHz
kHz
dB
1/fs
1/fs
Hz
fs=96kHz
Parameter
Symbol
Min.
Typ.
SHARP ROLL-OFF
Passband * 25
0dB ~ -0.06dB
-3.0dB
PB
PB
0
47.5
Stopband * 25
SB
55.6
Stopband Attenuation
SA
85.0
Group Delay Distortion : 0Hz~40kHz
GD
0
Group Delay * 26
GD
20
ADC Digital Filter(HPF)
Frequency Response -3.0dB
FR
1.9
Max.
Unit
44.2
kHz
kHz
kHz
dB
1/fs
1/fs
Hz
fs=192kHz
Parameter
Symbol
Min.
Typ.
SHARP ROLL-OFF
Passband * 25
0dB ~ -0.04dB
-3.0dB
PB
PB
0
96.0
Stopband * 25
SB
122.9
Stopband Attenuation
SA
85.0
Group Delay Distortion : 0Hz~40kHz
GD
0
Group Delay * 26
GD
16
ADC Digital Filter(HPF)
Frequency Response -3.0dB
FR
3.8
Max.
Unit
83.7
kHz
kHz
kHz
dB
1/fs
1/fs
Hz
016014707-E-00
- 20 -
2016/12