參數(shù)資料
型號(hào): TDA7561
廠商: 意法半導(dǎo)體
元件分類: 音頻放大器
英文描述: MULTIFUNCTION QUAD POWER AMPLIFIER WITH BUILT-IN DIAGNOSTICS FEATURES
中文描述: 多功能四功率放大器,內(nèi)置診斷特征
文件頁(yè)數(shù): 9/19頁(yè)
文件大?。?/td> 232K
代理商: TDA7561
9/19
TDA7561
Fig. 15 and 16 show SVR and OUTPUT waveforms at the turn-on (stand-by out) with and without TURN-ON
DIAGNOSTIC.
Figure 15. SVR and Output behaviour (CASE 1: without turn-on diagnostic)
Figure 16. SVR and Output pin behaviour (CASE 2: with turn-on diagnostic)
The information related to the outputs status is read and memorized at the end of the current pulse top. The
acquisition time is 100 ms (typ.). No audible noise is generated in the process. As for SHORT TO GND / Vs the
fault-detection thresholds remain unchanged from 26 dB to 12 dB gain setting. They are as follows:
Bias (power amp turn-on)
t
Diagnostic Enable
(Permanent)
Permanent diagnostic
acquisition time (100mS Typ)
Permanent Diagnostics data (output)
permitted time
I2CB DATA
Vsvr
Out
FAULT
event
Read Data
Bias (power amp turn-on)
permitted time
Turn-on diagnostic
acquisition tim e (100mS Typ)
t
Read Data
Permanent diagnostic
acquisition tim e (100mS Typ)
Permanent Diagnostics data (output)
permitted time
Diagnostic Enable
(Turn-on)
Turn-on Diagnostics data (output)
perm itted time
I2CB DATA
Vsvr
Out
Diagnostic Enable
(Perm anent)
FAULT
event
D01AU1253
S.C. to GND
x
S.C. to Vs
0V
1.8V
V
S
-1.8V
V
S
x
Normal Operation
1.2V
V
S
-1.2V
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