1Semiconductor
FEDL2201-01
ML2201–XXX
Low Pass Filter
ML2201’s analog output goes through the built-in Low Pass Filter. The Figure 4 below shows Frequency
Characteristics and the Table 3 shows Cut-Off Frequency of the LPF.
The LPF’s Frequency Characteristics and Cut-Off Frequency change in proportion to the sampling frequency. No
analog output directly from the D/A converter is unavailable on this chip.
[dB] 20
10
0
–10
–20
–30
–40
–50
–60
–70
–80
10
100
1k
10 k
[Hz]
Figure 4 LPF Frequency Characteristics (fSAM = 8.0 kHz)
Table 3 LPF Cut-Off Frequency
Sampling Frequency (kHz)
(fSAM)
4.0
5.3
6.4
8.0
10.6
12.8
16.0
Cut-Off Frequency (kHz)
(fCUT)
1.2
1.6
2.0
2.5
3.2
4.0
5.0
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