Description
LM4880 is a dual power amplifier capable of delivering power of 220mW per channel to 8 Ohm load using 5v power supply. This IC is specifically designed to produce high quality audio output with a minimum number of external components.
Circuit
In the circuit shown above, resistance R3 and R4 are feedback resistors. C1 and C2 are input DC decoupling capacitors. C4 provides power filtering to reduce noise. Capacitor C3 provide half filtering. Note that shutdown pin 5 is left unused. This can be used to automatically shut down when a logic high is given to the shutdown pin 5.
Parts required
IC – LM4880
R1,R2,R3,R4 – 20k
C1,C2,C3 – 1 uF
C4 – 0.1 u
C5,C6 – 220uF
Power – 5v
Typical usage
- Headphone Amplifier
- Personal Computers
For more detail on LM4880 refer the datasheet.
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