參數(shù)資料
型號(hào): TB2902HQ
廠商: Toshiba Corporation
英文描述: Maximum Power 41 W BTL 】 4-ch Audio Power IC
中文描述: 最大功率41糯橋接】4通道音頻功率IC
文件頁數(shù): 14/38頁
文件大?。?/td> 458K
代理商: TB2902HQ
TB2902HQ
2004-08-18
14
The output from the terminal of pin 4 can be changed from clip detector to offset detector output by
sending the write command via I
2
C.
If the L.P.F output voltage has become a half of pull up voltage for a while, firstly the signal output
volume goes down (cliping detector function). After that, it can be judged that the abnormal output
offset has occurred, if the L.P.F. output voltage does not rise above half of pull up voltage.
Offset detector
4
L.P.F.
smoothing
circuit
Volume control circuit
System shut down
Figure 9 Hardware Output Offset Detection
Vth
Vth
Output
waveform
Offset detector
output pin 4
Waveform
L.P.F output
Abnormal offset occured
Volume down
Judgement
Waiting time for Prevention
misjudgement
Detection delay time
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