TDA7449L_04 Datasheet, PDF (5/14 Pages) STMicroelectronics – LOW COST DIGITALLY CONTROLLED AUDIO PROCESSOR

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 10µF reference capacitor (CREF) value can be reduced to 4.7µF if the application requires
faster power ON.
Figure 5. THD vs. frequency
Figure 7. Channel separation vs. frequency
Figure 6. THD vs. RLOAD
5/14