CS4245 Datasheet, PDF (10/54 Pages) Cirrus Logic – 105 dB, 24-Bit, 192 kHz Streo Sudio CODEC

CS4245
DAC COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE
Parameter (Note 6,9)
Symbol Min
Typ
Max Unit
Combined Digital and On-chip Analog Filter Response
Single Speed Mode
Passband (Note 6)
to -0.05 dB corner
to -3 dB corner
0
-
.4780 Fs
0
-
.4996 Fs
Frequency Response 10 Hz to 20 kHz
-.01
-
+.08 dB
StopBand
.5465
-
-
Fs
StopBand Attenuation
(Note 7)
50
-
-
dB
Group Delay
tgd
-
10/Fs
-
s
De-emphasis Error (Note 8)
Fs = 44.1 kHz
-
-
+.05/-.25 dB
Combined Digital and On-chip Analog Filter Response
Double Speed Mode
Passband (Note 6)
to -0.1 dB corner
to -3 dB corner
0
-
.4650 Fs
0
-
.4982 Fs
Frequency Response 10 Hz to 20 kHz
-.05
-
+.2
dB
StopBand
.5770
-
-
Fs
StopBand Attenuation
(Note 7)
55
-
-
dB
Group Delay
tgd
-
5/Fs
-
s
Combined Digital and On-chip Analog Filter Response
Quad Speed Mode
Passband (Note 6)
to -0.1 dB corner
to -3 dB corner
0
-
0.397 Fs
0
-
0.476 Fs
Frequency Response 10 Hz to 20 kHz
0
-
+0.00004 dB
StopBand
0.7
-
-
Fs
StopBand Attenuation
(Note 7)
51
-
-
dB
Group Delay
tgd
-
2.5/Fs
-
s
Notes: 6. Filter response is guaranteed by design.
7. 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.
8. De-emphasis is available only in Single Speed Mode.
9. Response is clock dependent and will scale with Fs. Note that the amplitude vs. frequency plots of this
data (Figures 21 to 30) have been normalized to Fs and can be de-normalized by multiplying the X-axis
scale by Fs.
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