TDA7719 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'TDA7719' PDF : 45 Pages View PDF
TDA7719
Description
4.5
Softstep volume
When the volume-level is changed audible clicks could appear at the output. The root cause
of those clicks could either be a DC Offset before the volume-stage or the sudden change of
the envelope of the audio signal. With the Softstep feature both kinds of clicks could be
reduced to a minimum and are no more audible. The blend-time from one step to the next is
programmable as 5 ms or 10 ms. The softstep control is described in detail in Chapter 4.10.
4.6
4.6.1
Bass
There are four parameters programmable in the bass stage:
Bass attenuation
Figure 9 shows the attenuation as a function of frequency at a center frequency of 80 Hz.
Figure 9. Bass Control @ fc = 80 Hz, Q = 1
4.6.2
Bass center frequency
Figure 10 shows the four possible center frequencies 60, 80, 100 and 200 Hz.
Figure 10. Bass center frequencies @ gain = 14 dB, Q = 1
Doc ID 13698 Rev 5
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