LA4802 データシートの表示（PDF） - SANYO -> Panasonic

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LA4802

Headphone Stereo Power Amplifier

SANYO -> Panasonic 

LA4802T

External Components (Values in parentheses are recommended values.)

• C1, C2 (1 to 10 µF)

Input coupling capacitors.

• C3 (0.47 to 2.2 µF)

Boost switch on/off impulse noise reduction capacitor.

• C4 (1 µF)

Mute switch on/off impulse noise reduction capacitor.

• C5, C6 (10 to 22 µF)

Reference bias (VREF) decoupling capacitors.

• C7 (0.1 to 1 µF)

Beep input coupling capacitor. Be careful not to attenuate the beep tone signal.

• C8, C9 (2.2 to 4.7 µF)

Ripple filter capacitors.

• C10 (2.2 to 4.7 µF)

Reference bias (VREF) decoupling capacitors.

• C11 (1 to 2.2 µF)

Boost switch on/off impulse noise reduction capacitor.

• C12 (220 µF)

Power supply line decoupling capacitor.

• C13, C16 (0.47 µF)

Low pass filter capacitor in the bass boost circuit. The amount of bass boost depends on the value of this capacitor.

• C14, C17 (0.1 µF)

Output oscillation prevention capacitors. We recommend using Mylar capacitors. Since the oscillation stability

varies depending on the PCB layout and other factors, we recommend a value of at least 0.1 µF for these capacitors.

• C15, C18 (220 to 470 µF)

Output capacitors. Low band attenuation increases with lower capacitances.

• R1 (24 to 51 kΩ)

Smoothing resistor for the boost switch on/off transition. Note that using a smaller value will increase the idling

current when the boost switch is off.

• R2, R3 (10 Ω)

Output oscillation prevention resistors.

No. 6657-5/10

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