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參數(shù)資料
| 型號： | TA8221ALQ |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 30 W, 2 CHANNEL, AUDIO AMPLIFIER, PSFM17 |
| 封裝： | PLASTIC, HSIP-17 |
| 文件頁數(shù)： | 11/16頁 |
| 文件大?。?/td> | 1259K |
| 代理商： | TA8221ALQ |
TA8221AHQ / ALQ
2006-04-28
4
3. Preventive measure against oscillation
For preventing the oscillation, it is advisable to use C4, the condenser of polyester film having small
characteristic fluctuation of the temperature and the frequency.
The condenser (C6) between input and GND is effective for preventng oscillation which is generated with a
feedback signal from an output stage.
The resistance R to be series applied to C4 is effective for phase correction of high frequency, and improves the
oscillation allowance.
(1) Voltage gain to be used (GV setting)
(2) Capacity value of condenser
(3) Kind of condenser
(4) Layout of printed board
In case of its use with the voltage gain GV reduced or with the feedback amount increased, care must be taken
because the phaseinversion is caused by the high frequency resulting in making the oscillation liable generated.
4. Adjustment of output offset (when the power supply turn on)
As this IC is contructed with DC circuit on the primary stage, it is necessary to lower a input offset or output
offset by agreement with the each leading edge time constant of the input voltage in the primary stage and NF
terminal voltage.
Concretely, monitor the output DC voltage and vary the capacity value in input condenser and NF condenser (see
Fig.4)
(reference) In case of setting the condition (GV = 40dB) with Rf = 470.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TA8221AHQ | 30 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM17 |
| TA8221ALQ | 30 W, 2 CHANNEL, AUDIO AMPLIFIER, PSFM17 |
| TA8221AL | 30 W, 2 CHANNEL, AUDIO AMPLIFIER, PSFM17 |
| TA8221AH | 30 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM17 |
| TA8221AL | 30 W, 2 CHANNEL, AUDIO AMPLIFIER, PSFM17 |
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