CS4354 查看數據表（PDF） - Cirrus Logic
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CS4354 Datasheet PDF : 25 Pages
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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)
Parameter
Single-Speed Mode - 48 kHz
Passband (Note 8)
to -0.05 dB corner
to -3 dB corner
Frequency Response 20 Hz to 20 kHz
StopBand
StopBand Attenuation
(Note 9)
High Pass Filter Settling Time (input signal goes to 95% of its final value)
Total Group Delay
De-emphasis Error (Note 10)(Relative to 1 kHz)
Fs = 44.1 kHz
Double-Speed Mode - 96 kHz
Passband (Note 8)
to -0.05 dB corner
to -3 dB corner
Frequency Response 20 Hz to 20 kHz
StopBand
StopBand Attenuation
(Note 9)
High Pass Filter Settling Time (input signal goes to 95% of its final value)
Total Group Delay
Quad-Speed Mode - 192 kHz
Passband (Note 8)
to -0.05 dB corner
to -3 dB corner
Frequency Response 20 Hz to 20 kHz
StopBand
StopBand Attenuation
(Note 9)
High Pass Filter Settling Time (input signal goes to 95% of its final value)
Total Group Delay
Notes: 8. Response is clock-dependent and will scale with Fs.
Min
1.796•10-4
1.947•10-5
-0.05
0.550
80 dB
-
-
-
8.980•10-5
9.736•10-6
-0.05
0.583
82 dB
-
-
4.490•10-5
4.868•10-6
-0.05
0.630
85 dB
-
-
Typ
-
-
-
-
-
2.452•104/Fs
9.4/Fs
-
-
-
-
-
-
4.903•104/Fs
7.0/Fs
-
-
-
-
-
9.807•104/Fs
4.9/Fs
Max
0.470
0.500
+0.05
-
-
-
-
±0.14
0.290
0.500
+0.05
-
-
-
-
0.253
0.486
+0.05
-
-
-
-
Unit
Fs
Fs
dB
Fs
dB
s
s
dB
Fs
Fs
dB
Fs
dB
s
s
Fs
Fs
dB
Fs
dB
s
s
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.
DS895A2
7
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