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参数资料
| 型号： | TA8201AK |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 17 W, 1 CHANNEL, AUDIO AMPLIFIER, PSFM7 |
| 封装： | HSIP-7 |
| 文件页数： | 4/9页 |
| 文件大小： | 719K |
| 代理商： | TA8201AK |
TA8201AK
2002-10-30
4
4. 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 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 condenser
(3) Kind of condenser
(4) layout of printed board
By increasing Rf, decrease of GV is possible.
However, care must be taken since the feedback increase is liable to produce oscillation.
5 External part list and description
Influence
Symbol
Recommended
Value
Feature
Smaller Than
Recommended
Value
Larger Than
Recommended
Value
Remarks
C1
4.7F
DC blocking
Related to popping noise at VCC → on
Related to gain.
Refer to item2.
C2
47F
Feedback
condenser
Determination of low cut
-off frequency.
f
R
L
f
2
1
C2
×
p
=
C3
220F
Ripple
reduction
Time constant is
small at VCC → on
or off.
Time constant is
large at VCC → on or off.
Refer to item3.
C4
0.15F
Oscillation
prevention
Made liable to
oscillate.
Oscillation allowance
improved.
Refer to item4.
C5
1000F
Ripple
filter
For filtering power supply hum and ripple.
Large at using AC rectified power supply.
Small at using DC power supply.
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相关代理商/技术参数 |
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| TA8204 | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:LOW FREQUENCY POWER AMPLIFIER |
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| TA8205AH | 制造商:Panasonic Industrial Company 功能描述:IC |
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