Adc Digital Filter Characteristics - Cirrus Logic CS4244 Manual

ADC DIGITAL FILTER CHARACTERISTICS

Test Conditions (unless otherwise specified): Device configured as shown in
wave: 1 kHz; VA_SEL = 0 for VA = 3.3 VDC, 1 for VA = 5.0 VDC.; Measurement Bandwidth is 20 Hz to 20 kHz
unless otherwise specified. See filter plots in
Passband (Frequency Response)
Passband Ripple
Stopband
Stopband Attenuation
Single-Speed Mode
ADC Group Delay (Note 16)
High-Pass Filter Characteristics (48 kHz Fs)
Frequency Response
Phase Deviation
Passband Ripple
Filter Settling Time (Note 17)
Double-Speed Mode
ADC Group Delay (Note 16)
High-Pass Filter Characteristics (96 kHz Fs)
Frequency Response
Phase Deviation
Passband Ripple
Filter Settling Time (Note 17)
Note:
15. Response is clock-dependent and will scale with Fs.
16. The ADC group delay is measured from the time the analog inputs are sampled on the AINx pins to
the FS/LRCK transition (rising or falling) after the last bit of that (group of) sample(s) has been
transmitted on SDOUTx.
17. The amount of time from input of half-full-scale step function until the filter output settles to 0.1% of
full scale.
DS900F2
Section 7. on page
Parameter (Note 15)
-3.0 dB
-0.13 dB
@ 20 Hz
-3.0 dB
-0.13 dB
@ 20 Hz
Section 2. on page
60.
Min
to -0.1 dB corner 0
-0.09
0.6
70
-
-
-
-
-0.09
-
-
-
-
-
-0.15
-
CS4244
8. Input sine
Typ Max Unit
- 0.4535 Fs
- 0.17 dB
- - Fs
- - dB
9.5/Fs - s
2 - Hz
11 - Hz
10 - Deg
- 0.17 dB
0 s
25000/Fs
9.5/Fs - s
4 - Hz
22 - Hz
10 - Deg
- 0.17 dB
0 s
25000/Fs
14