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TA8220HQ Datasheet(PDF) 6 Page - Toshiba Semiconductor

Part No. TA8220HQ
Description  30W BTL × 2ch Audio Power Amplifier
Download  13 Pages
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Maker  TOSHIBA [Toshiba Semiconductor]
Homepage  http://www.semicon.toshiba.co.jp/eng
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TA8220HQ Datasheet(HTML) 6 Page - Toshiba Semiconductor

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TA8220HQ
2004-09-28
6
6. Output to VCC, output to GND detection function (pin(9))
The output short detection terminal of pin(9) has open collector output structure on chip as shown in Fig.6.
In unusual case that output terminal of power amp. is condition of output to VCC or output to GND short, it is
possible to protect all the system of apparatus as well as power IC protection.
In case of being unused this function, use this IC as open−connection on pin(9).
7. External part list and description
Influence
Sym
bol
Recommended
Value
Feature
Smaller Than
Recommended
Value
Larger Than
Recommended
Value
Remarks
C1
4.7µF
DC blocking
Related to pop noise at VCC→on.
Related to gain.
Refer to item 4.
Related to pop noise at VCC→on.
C2
47µF
Feedback
condenser
Determination of low cut
−off frequency
f
R
L
f
2
1
C2
π
=
C3
220µF
Ripple reduction
Time constant is
small at VCC→on
or off.
Time constant is
large at VCC→on
or off.
C4
0.12µF
Oscillation
prevention
Made liable to
oscillate.
Oscillation
allowance
Refer to item 3.
C5
1000µF
Ripple filter
For filtering power supply hum and
ripple.
Large at using AC rectified power
supply.
Small at using DC power supply.
C6
1000pF
Oscillation
prevention
Oscillation allowance improved.
Noise reduction
Refer to item 3.


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