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參數(shù)資料
| 型號(hào)： | TA8215H |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 18 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM17 |
| 封裝： | HZIP-17 |
| 文件頁數(shù)： | 8/12頁 |
| 文件大小： | 1005K |
| 代理商： | TA8215H |
TA8215H / L
2002-10-30
5
5. Muting function
Through setting pin (1) (mute terminal) at about 1V or less, muting becomes possible.
The interval circuit of IC is shown in Fig.4.
When pin (1) is set to low, Q1 and Q2 are turned on, the charge of the ripple condenser is discharged and the bias
is cut. The mute amount of 60dB or over can be obtained.
Since this muting function rapidly discharges the charge of the ripple filter capacitor of pin (8), the pop noise is
generated by the DC fluctuation of the bias section.
Therefore, this muting function is not appropriate to the audio muting but is effective in muting at VCC→on.
6. 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 pop noise at VCC→on.
Related to gain.
Refer to item 4.
Related to pop noise at VCC→on.
C2
47F
Feedback
condenser
Determination of low cut
-off frequency.
C2 =
f
R
L
f
2
1
·
F
―
C3
220F
Ripple
reduction
Time constant is small
at VCC→on or off.
Time constant is large
at VCC→on or off.
―
C4
0.12F
Oscillation
prevention
Made liable to
oscillate.
Oscillation allowance
improved.
Refer to item 3.
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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| TA8215HQ | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:18W BTL 】 2CH Audio Power Amplifier |
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| TA8216H | 制造商:Panasonic Industrial Company 功能描述:IC |
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