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AN7124 Datasheet(PDF) 5 Page - Panasonic Semiconductor

Part No. AN7124
Description  Dual 3.1 W Audio Power Amplifier
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Maker  PANASONIC [Panasonic Semiconductor]
Homepage  http://www.panasonic.com/industrial/
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ICs for Audio Common Use
AN7124
5
s Application Note (continued)
4.Oscillation
To prevent oscillation, it is advisable to use C (Zobel network capacitor). Using polyester film capacitor has small
characteristic fluctuation with temperature and the frequency.The resistor R connected in series with C is effective
for phase correction at high frequency, as a result, it improves the oscillation allowance.
5.Bootstrap
The capacitor C connected between the output and bootstrap pin helps to increase the output dynamic range and
hence increases the output power of the IC.
Pin7,12
2.2
1 000
µF
47 nF
C
R
pp
Pin8,11
Pin7,12
C
47
µF
VCC




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