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参数资料
| 型号： | TDA7567PDTR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | AUDIO AMPLIFIER, PDSO36 |
| 封装： | ROHS COMPLIANT, SOP-36 |
| 文件页数： | 5/30页 |
| 文件大小： | 346K |
| 代理商： | TDA7567PDTR |
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TDA7567PD
Diagnostics functional description
Doc ID 16903 Rev 1
Figure 7.
SVR and output pin behavior (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 16 dB gain setting. They are as follows:
Figure 8.
Short circuit detection thresholds
Concerning short across the speaker / open speaker, the threshold varies from 26 dB to
16 dB gain setting, since different loads are expected (either normal speaker's impedance
or high impedance). The values in case of 26 dB gain are as follows:
Figure 9.
Load detection thresholds - high gain setting 26 dB
If the line driver mode (Gv = 16 dB and line driver mode diagnostic = 1) is selected, the
same thresholds will change as follows:
Figure 10. Load detection thresholds - low gain setting 16 dB
Bias (power amp turn-on)
permitted time
Turn-on diagnostic
acquisition time (100mS Typ)
t
Read Data
Permanent diagnostic
acquisition time (100mS Typ)
Permanent Diagnostics data (output)
permitted time
Diagnostic Enable
(Turn-on)
Turn-on Diagnostics data (output)
permitted time
I2CB DATA
Vsvr
Out
Diagnostic Enable
(Permanent)
FAULT
event
D01AU1253
S.C. to GND
x
S.C. to Vs
0V
1.8V
VS-1.8V
VS
x
Normal Operation
1.2V
VS-1.2V
S.C. across Load
x
Open Load
0V
1.5
Ω
45
Ω
Infinite
x
Normal Operation
0.5
Ω
85
Ω
AC00060
S.C. across Load
x
Open Load
0
Ω
7
Ω
180
Ω
infinite
x
Normal Operation
1.5
Ω
330
Ω
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