14
DS624F4
CS5368
DIGITAL FILTER CHARACTERISTICS
Notes:
1.
The filter frequency response scales precisely with Fs.
2.
Response shown is for Fs equal to 48 kHz. Filter characteristics scale with Fs.
OVERFLOW TIMEOUT
Logic "0" = GND = 0 V; Logic "1" = VLS; CL = 30 pF, timing threshold is 50% of VLS.
Parameter
Symbol
Min
Typ
Max
Unit
Single-Speed Mode (2 kHz to 54 kHz sample rates)
Passband (Note 1)
(-0.1 dB)
0
-
0.47
Fs
Passband Ripple
-0.035
0.035
dB
Stopband (Note 1)
0.58
-
Fs
Stopband Attenuation
-95
dB
Total Group Delay (Fs = Output Sample Rate)
tgd
-12/Fs
s
Double-Speed Mode (54 kHz to 108 kHz sample rates)
Passband (Note 1)
(-0.1 dB)
0
-
0.45
Fs
Passband Ripple
-0.035
0.035
dB
Stopband (Note 1)
0.68
-
Fs
Stopband Attenuation
-92
dB
Total Group Delay (Fs = Output Sample Rate)
tgd
-9/Fs
s
Quad-Speed Mode (108 kHz to 216 kHz sample rates)
Passband (Note 1)
(-0.1 dB)
0
-
0.24
Fs
Passband Ripple
-0.035
0.035
dB
Stopband (Note 1)
0.78
-
Fs
Stopband Attenuation
-92
dB
Total Group Delay (Fs = Output Sample Rate)
tgd
-5/Fs
s
High-Pass Filter Characteristics
Frequency Response (Note 2)
-3.0 dB
-0.13 dB
-
1
20
-Hz
Phase Deviation (Note 2)
@ 20 Hz
-
10
-
Deg
Passband Ripple
-0
dB
Filter Settling Time
105/Fs
-
s
Parameter
Symbol
Min
Typ
Max
Unit
OVFL time-out on overrange condition
Fs = 44.1 kHz
Fs = 192 kHz
-
(217-1)/Fs
2972
683
-ms
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