Cirrus-logic CS4224 Manual do Utilizador descarregar pdf (Página 29)

CS4223 CS4224

DS290F1 29

Figure 14. 2- and 3-Pole Butterworth Filters

Gain

dB

-10 dB

0dB

Frequency

T2 = 15 µs

T1 = 50 µs

F1 F2

Figure 15. De-emphasis Curve

Signal

Noise

0

0 -113.

5

Attenuation (dB)

Amplitude (dB)

Analog Digital

Figure 16. Hybrid Analog/Digital Attenuation

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