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參數(shù)資料
| 型號(hào)： | TA8225H |
| 元件分類(lèi)： | 音頻／視頻放大 |
| 英文描述： | 45 W, 1 CHANNEL, AUDIO AMPLIFIER, PZFM17 |
| 封裝： | HZIP-17 |
| 文件頁(yè)數(shù)： | 9/15頁(yè) |
| 文件大?。?/td> | 1315K |
| 代理商： | TA8225H |
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TA8225H/L
2002-10-30
3
2. 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 preventing oscillacion which is generated with
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.
Since the oscillation allowance is varied according to the causes described below, perform the temperature test
to check 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 phase-inversion is caused by the high frequency resulting in making the oscillation liable
generated.
3. Pop noise
A pop noise generated when the power source is turned on
depends on rise times of the in-phase side output ((11)pin) and
the negative-phase side output ((16)pin), that is, output offset
voltage.
The following two points may be pointed out as causes for
generation the output offset voltage:
(1) In-phase and negative-phase NF capacitor charging times
(2) Input offset voltage
Especially, the factor (2) relates to the pop noise level.
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| TA8225HQ | 制造商:TOSHIBA 制造商全稱(chēng):Toshiba Semiconductor 功能描述:45W BTL Audio Amplifier |
| TA8225L | 制造商:TOSHIBA 制造商全稱(chēng):Toshiba Semiconductor 功能描述:45W BTL AUDIO AMPLIFIER |
| TA8225LQ | 制造商:Toshiba America Electronic Components 功能描述: |
| TA8227 | 制造商:TOSHIBA 制造商全稱(chēng):Toshiba Semiconductor 功能描述:LOW FREQUENCY POWER AMPLIFIER |
| TA8227AP | 制造商:UTC-IC 制造商全稱(chēng):UTC-IC 功能描述:LOW FREQUENCY POWER AMPLIFIER |
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