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SM5843A Datasheet, PDF (12/24 Pages) Nippon Precision Circuits Inc – Audio Multi-function Digital Filter | |||
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SM5843AÃ1
8-times interpolation ï¬lter (slow roll-off: response 2)
Parameter
Passband
Stopband
Passband ripple
Stopband attenuation
Group delay1
Condition
< 3 dB attenuation
> 77 dB attenuation
0 to 0.235fs
SYNCN = LOW
SYNCN = HIGH
Rating @ 256fs
0 to 0.455fs
0.745fs to 7.255fs
⤠±0.00003 dB
⥠77 dB
25.625/fs
25.25/fs to 26.0/fs
1. The digital ï¬lter arithmetic computation time from when the completion of data input at rate fs to the start of data output at rate 8fs.
8fs ï¬lter response with deemphasis OFF
0
20
40
60
80
100
120
140
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
Frequency (Ãfs)
8fs ï¬lter band transition response with deemphasis OFF
0
20
40
60
80
100
120
140
0.00
0.125
0.25
0.375
0.50
0.625
0.75
0.825
1.00
Frequency (Ãfs)
8fs ï¬lter passband response with deemphasis OFF
-2.0
0.0
2.0
4.0
6.0
0.000
0.125
0.250
0.375
Frequency (Ãfs)
0.500
NIPPON PRECISION CIRCUITSâ12
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