HiFi headphone amplifier circuit

Posted on Feb 5, 2014

LM4880 is HiFi dual audio amplifier IC from National Semiconductors. This IC is specifically designed to produce high quality audio output with a minimum number of external components. LM4880 is capable of delivering 250mW per channel into an 8 ohm load. The IC has 0. 1% THD and has a supply voltage range of 2. 7 to 5V DC. In the circuit shown below,

HiFi headphone amplifier circuit
Click here to download the full size of the above Circuit.

resistors R1 and R2 are feedback resistors. C4 and C5 are input DC decoupling capacitors. Capacitor C3 provides power supply filtering and thereby reduces noise. The amplifier automatically shut downs when a logic high is given to the shutdown pin (pin 5). Capacitor C6 does the job of half supply filtering. We aim to transmit more information by carrying articles. Please send us an E-mail to wanghuali@hqew. net within 15 days if we are involved in the problems of article content, copyright or other problems. We will delete it soon.

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