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參數(shù)資料
| 型號(hào)： | TA8225LQ |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 45 W, 1 CHANNEL, AUDIO AMPLIFIER, PSFM17 |
| 封裝： | 2 MM PITCH, PLASTIC, HSIP-17 |
| 文件頁(yè)數(shù)： | 10/17頁(yè) |
| 文件大?。?/td> | 1284K |
| 代理商： | TA8225LQ |
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TA8225HQ/LQ
2006-04-28
2
Block Diagram
TA8225HQ/LQ (GV = 40dB)
Caution For Use And Method Of Application
1. Voltage gain adjustment
Voltage gain GV of this IC is decided by the external feedback resistors Rf1 and Rf2.
Gain fluctuation by temperature can be made smaller than they are housed in IC.
Voltage gain GV is decided by the following expression:
If R0 = 20kRf1 > Rf2
GV≒20og
(dB)
6
f2
R
f2
R
f1
R
+
If R0 = 20k > Rf1 > Rf2
GV≒20og
(dB)
6
f2
R
f2
R
)
f1
R
//
0
(R
+
If Rf1 and Rf2 are made small, the following problems may be caused:
(1) When output short is released, output DC voltage is not restored.
(2) Fluctuation of output DC voltage by current I in (Fig.1).
If voltage gain is made small excessively, oscillation may be taken place and therefore, this IC shall be used at
GV = 34dB or above.
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| TA8225HQ | 45 W, 1 CHANNEL, AUDIO AMPLIFIER, PZFM17 |
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