参数资料
型号: LA4555
元件分类: 音频/视频放大
英文描述: 2.3 W, 2 CHANNEL, AUDIO AMPLIFIER, PDIP12
封装: DIP-12
文件页数: 4/10页
文件大小: 364K
代理商: LA4555
LA4555
No.1697–3/10
Sample Printed Circuit Pattern (Cu-foiled side)
Description of External Parts
C1 (C2) : Feedback capacitor. The low cutoff frequency is determined by the following formula.
fL : Low cutoff frequency
Rf : Feedback resistance
Since this capacitor as well as decoupling capacitor affects the starting time, the capacitor value must be fixed
with the necessary low frequency band fully considered.
C3 (C4) : Bootstrap capacitor. The output at low frequencies depends on this capacitor. Decreasing the capacitor value
lowers the output at low frequencies. A capacitor value of 47
F or more is required.
C5 (C6) : Oscillation blocking capacitor. Use a polyester film capacitor that is good in high frequency response and
temperature characteristic. The use of an electrolytic capacitor, ceramic capacitor may cause oscillation to
occur at low temperatures.
Continued on next page.
fL=
1
2
πC1Rf
Sample Application Circuit : Bridge Amplifier Use 1
Sample Application Circuit : Bridge Amplifier Use 2
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