SM5843A

×1

NIPPON PRECISION CIRCUITS—11

Filter Characteristics

8-times interpolation filter (sharp roll-off: response 1)

8fs filter response with deemphasis OFF

8fs filter band transition response with deemphasis OFF

8fs filter passband response with deemphasis OFF

Parameter

Condition

Rating @ 256fs

Passband

0 to 0.4535fs

Stopband

0.5465fs to 7.4535fs

Passband ripple

≤ ±0.00005 dB

Stopband attenuation

≥ 110 dB

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.

SYNCN = LOW

44.625/fs

SYNCN = HIGH

44.25/fs to 45.0/fs

140

120

100

80

60

40

20

0

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

Frequency (

×fs)

140

120

100

80

60

40

20

0

0.440

0.465

0.490

0.515

0.540

0.565

0.615

0.590

0.640

Frequency (

×fs)

0.000

0.125

0.250

0.375

0.500

0.0001

0.00005

0.00000

-0.00005

-0.0001

Frequency (

×fs)