LM4880

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

4 of 11

www.unisonic.com.tw

QW-R502-033. E



TYPICAL APPLICATION

Bias

+

+

1

7

OUT A

OUT B

Shutdown

Bypass

IN B

6

3

5

2

+

+

-

+

-

+

IN A

GND

+

4

8

20kΩ

Audio

Input

Audio

Input

20kΩ

50kΩ

0.1µF

20kΩ

+

8Ω or 32Ω

50kΩ

1.0µF

20kΩ

Fig. 1 Typical Audio Amplifier Application Circuit

15kΩ

15kΩ

8Ω or 32Ω



COMPONENTS

FUNCTIONAL DESCRIPTION

1.

Inverting input resistance which sets the closed-loop gain in conjunction with RF. This resistor

2.

Input coupling capacitor which blocks the DC voltage at the amplifier’s input terminals. Also

3.

4.

Supply bypass capacitor which provides power supply filtering.

5.

Bypass pin capacitor which provides half-supply filtering.

6.

Output coupling capacitor which blocks the DC voltage at the amplifier’s output. Forms a high