DS895A2

7

CS4354

COMBINED DIGITAL AND ON-CHIP ANALOG FILTER CHARACTERISTICS

The filter characteristics have been normalized to the sample rate (Fs) and can be referenced to the desired sam-

ple rate by multiplying the given characteristic by Fs. Reference level (0 dB) is set at 997 Hz. (Note 11)

Notes: 8. Response is clock-dependent and will scale with Fs.

9. For Single- and Double-Speed Mode, the Measurement Bandwidth is from stopband to 3 Fs.

For Quad-Speed Mode, the Measurement Bandwidth is from stopband to 1.34 Fs.

10. De-emphasis is available only in Single-Speed Mode.

11. Amplitude vs. frequency plots of this data are available in “Combined Digital and On-chip Analog Filter

Response Plots” on page 19.

Parameter

Min

Typ

Max

Unit

Single-Speed Mode - 48 kHz

Passband (Note 8)

to -0.05 dB corner

to -3 dB corner

-

-

0.470

0.500

Fs

Fs

Frequency Response 20 Hz to 20 kHz

-0.05

-

+0.05

dB

StopBand

0.550

-

-

Fs

StopBand Attenuation

(Note 9)

80 dB

-

-

dB

High Pass Filter Settling Time (input signal goes to 95% of its final value)

-

-

s

Total Group Delay

-

9.4/Fs

-

s

De-emphasis Error (Note 10)(Relative to 1 kHz)

Fs = 44.1 kHz

-

-

±0.14

dB

Double-Speed Mode - 96 kHz

Passband (Note 8)

to -0.05 dB corner

to -3 dB corner

-

-

0.290

0.500

Fs

Fs

Frequency Response 20 Hz to 20 kHz

-0.05

-

+0.05

dB

StopBand

0.583

-

-

Fs

StopBand Attenuation

(Note 9)

82 dB

-

-

dB

High Pass Filter Settling Time (input signal goes to 95% of its final value)

-

-

s

Total Group Delay

-

7.0/Fs

-

s

Quad-Speed Mode - 192 kHz

Passband (Note 8)

to -0.05 dB corner

to -3 dB corner

-

-

0.253

0.486

Fs

Fs

Frequency Response 20 Hz to 20 kHz

-0.05

-

+0.05

dB

StopBand

0.630

-

-

Fs

StopBand Attenuation

(Note 9)

85 dB

-

-

dB

High Pass Filter Settling Time (input signal goes to 95% of its final value)

-

-

s

Total Group Delay

-

4.9/Fs

-

s