SM5843A×1
Filter Characteristics
8-times interpolation filter (sharp roll-off: response 1)
Parameter
Condition
Rating @ 256fs
0 to 0.4535fs
Passband
Stopband
0.5465fs to 7.4535fs
≤ ±0.00005 dB
≥ 110 dB
Passband ripple
Stopband attenuation
SYNCN = LOW
SYNCN = HIGH
44.625/fs
1
Group delay
44.25/fs to 45.0/fs
1. The digital filter arithmetic computation time from when the completion of data input at rate fs to the start of data output at rate 8fs.
8fs filter 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
(×fs)
8fs filter band transition response with deemphasis OFF
0
20
40
60
80
100
120
140
0.440
0.465
0.490
0.515
0.540
0.565
0.590
0.615
0.640
Frequency
(×fs)
8fs filter passband response with deemphasis OFF
-0.0001
-0.00005
0.00000
0.00005
0.0001
0.000
0.125
0.250
0.375
0.500
Frequency
(×fs)
NIPPON PRECISION CIRCUITS—11