An audio amplifier is an electronic device or circuit that increases the power of audio signals, making them stronger and suitable for driving speakers or headphones. Audio amplifiers are commonly used in a wide range of applications, from personal audio devices like smartphones and headphones to home theater systems, car audio systems, musical instruments, and public address systems.
Part Number: AN17807A
Function: Audio Amplifier
Package: SIP 12 Pin type
AN17807A is 5W x 2, Audio Amplifier. This is an integrated circuit (IC) that functions as a multi-channel audio amplifier. It is commonly used in audio applications to amplify audio signals and drive speakers or headphones. The AN17807A is manufactured by Panasonic (formerly Matsushita) and falls under the category of audio power amplifier ICs.
It is a circuit that inverts the operating ramp of the volume control coming from the micro and the output of the inverter is applied to the an17807 circuit. In other words, having a minimum input of 0.8v we will have the maximum output of 1.94v and if we have 1.94v we will get 0.8v, which is just what we need for the replacement to work correctly.
Below is the diagram of the circuit whose heart is an LM324 of which we will only use one of its four gates.