7
CS4361
Confidential Draft
9/30/11
COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE
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. (See Note 5)
2.
Response is clock-dependent and will scale with Fs.
3.
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.
For Quad-Speed Mode, the measurement bandwidth is 0.7 Fs to 1 Fs.
4.
De-emphasis is available only in Single-Speed Mode.
5.
Amplitude vs. Frequency plots of this data are available in “Performance Plots” on page 18.
Parameter
Symbol
Min
Typ
Max
Unit
Single-Speed Mode
Passband (Note 2)
to -0.05 dB corner
to -3 dB corner
0
-
.4780
.4996
Fs
Frequency Response 10 Hz to 20 kHz
-.01
-
+.08
dB
StopBand
.5465
-
Fs
StopBand Attenuation
50
-
dB
Group Delay
tgd
-
10/Fs
-
s
De-emphasis Error (Note 4)
Fs = 44.1 kHz
-
+.05/-.25
dB
Double-Speed Mode
Passband (Note 2)
to -0.1 dB corner
to -3 dB corner
0
-
.4650
.4982
Fs
Frequency Response 10 Hz to 20 kHz
-.05
-
+.2
dB
StopBand
.5770
-
Fs
StopBand Attenuation
55
-
dB
Group Delay
tgd
-
5/Fs
-
s
Quad-Speed Mode
Passband (Note 2)
to -0.1 dB corner
to -3 dB corner
0
-
0.397
0.476
Fs
Frequency Response 10 Hz to 20 kHz
0
-
+0.00004
dB
StopBand
0.7
-
Fs
StopBand Attenuation
51
-
dB
Group Delay
tgd
-
2.5/Fs
-
s
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