Cirrus Logic CS4340A - Manual (Page 14)

CS4340A
14 DS590F2
COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE
(The
filter characteristics and the X-axis of the response plots have been normalized to the sample rate (Fs) and can be
referenced to the desired sample rate by multiplying the given characteristic by Fs.)
Notes: 4. For Single-Speed Mode, the measurement bandwidth is 0.5465 Fs to 3 Fs.
For Double-Speed Mode, the measurement bandwidth is 0.577 Fs to 1.4 Fs.
5. De-emphasis is only available in Single-Speed Mode.
Parameter Min Typ Max Unit
Single-Speed Mode - (4 kHz to 50 kHz sample rates)
Passband
to -0.05 dB corner
to -3 dB corner
0
0 -
- 0.4535
0.4998 Fs
Fs
Frequency Response 10 Hz to 20 kHz -0.02 - +0.08 dB
StopBand 0.5465 - - Fs
StopBand Attenuation (Note 4) 50 - - dB
Group Delay - 9/Fs - s
De-emphasis Error (Relative to 1 kHz) Fs = 44.1 kHz
(Note 5)
- - +0.05/-0.14 dB
Double-Speed Mode - (84 kHz to 100 kHz sample rates)
Passband
to -0.1 dB corner
to -3 dB corner
0
0 -
- 0.4621
0.4982 Fs
Fs
Frequency Response 10 Hz to 20 kHz -0.06 - +0.2 dB
StopBand 0.577 - - Fs
StopBand Attenuation (Note 4) 55 - - dB
Group Delay - 4/Fs - s
Quad-Speed Mode - (170 kHz to 200 kHz sample rates)
Frequency Response 10 Hz to 20 kHz -1 - 0 dB
Group Delay - 3/Fs - s
Figure 9. Single-Speed Stopband Rejection Figure 10. Single-Speed Transition Band