ML2201 データシートの表示（PDF） - Oki Electric Industry

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ML2201

Speech Synthesizer LSI with on-chip 384K Mask ROM

Oki Electric Industry 

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

14/20

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