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TDA7449L

3

APLICATION SUGGESTIONS

The first and the last stages are volume control blocks. The control range is 0 to -47dB (mute) for the first

one, 0 to -79dB (mute) for the last one. Both of them have 1dB step resolution.

The very high resolution allows the implementation of systems free from any noisy acoustical effect. The

TDA7449L audioprocessor provides 2 bands tones control.

3.1 CREF

The suggested 10

µF reference capacitor (CREF) value can be reduced to 4.7µF if the application requires

faster power ON.

Figure 5. THD vs. frequency

Figure 6. THD vs. RLOAD

Figure 7. Channel separation vs. frequency