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參數(shù)資料
| 型號： | TA8227P |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 3 W, 2 CHANNEL, AUDIO AMPLIFIER, PDIP12 |
| 封裝： | 0.300 INCH, 2.54 MM PITCH, HEAT SINK, PLASTIC, DIP-12 |
| 文件頁數(shù)： | 4/11頁 |
| 文件大小： | 472K |
| 代理商： | TA8227P |
TA8227P
2002-03-05
2
Block Diagram
Application Information and Application Method
1. Adjustment of voltage gain
The voltage gain Gv is obtained as follows by R1, R2 and Rf in Figure 1.
R1
+
Rf
R2
+
R1
+
Rf
og
20
=
Gv
l
When Rf = 0
Gv = 56.5dB (typ.)
When Rf = 120
Gv = 45dB (typ.)
Figure 1
By increasing Rf, reduction of Gv is possible. However, since the feedback increase is liable to produce
oscillation, it is recommended to use this at 40dB or over.
2. Thermal shut-down circuit
The thermal shut-down circuit is built in for the purpose of preventing the destruction of IC due to the
abnormal temperature rise when the heat radiation is insufficient.
The operation temperature is set at radiation Fin temperature 175°C (typ.).
At this temperature or over the bias is interrupted to prevent the destruction of IC.
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