參數(shù)資料
型號: TEA7532FP
廠商: 意法半導(dǎo)體
英文描述: MONITOR AMPLIFIER
中文描述: 顯示器放大器
文件頁數(shù): 8/16頁
文件大?。?/td> 201K
代理商: TEA7532FP
Figure15.
Principle of operation.
When examining the spectral density of the voice
area and the larsen area, it can be seen that the
dominant features of each exist in different fre-
quencybands.
To extract the larsen component, the microphone
signalisfirst filteredbya secondorder filter (formed
by two first orderfilters),thenamplifiedand rectified
in order to producethe AGCcontrol signal.
The first filter is generatedby thecapacitorson pins 5 and6 ; the second filter by the R-C networkon pin 7.
Figure 16.
Zin : 4 k
V7
A =
= 15
V5 – V6
TEA7532
8/16
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