Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Class D
Output Type:	1-Channel (Mono)
Max Output Power x Channels @ Load:	2.3W x 1 @ 8 Ohm
Voltage - Supply:	2.5 V ~ 5.2 V
Features:	AGC, Depop, Differential Inputs, Short-Circuit and Thermal Protection, Shutdown
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Supplier Device Package:	12-WLCSP (1.86x1.44)
Package / Case:	12-UFBGA, WLCSP
Base Part Number:	FAB3103

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FAB3103UCX Application Field and Working Principle

Introduction

The FAB3103UCX is a high performance audio amplifier IC designed for professional and consumer audio applications. It offers excellent audio fidelity, low distortion, and low power consumption. The IC is a single amplifier specifically designed for audio applications with an input voltage range of 2.5V to 6V. The maximum output current capability is 350 mA. The FAB3103UCX boasts several features, including high efficiency, low distortion, and low noise operation, making it an ideal choice for an audio amplifier.

Application Field

The FAB3103UCX is an ideal choice for professional and consumer audio applications in the audio field, especially those that require quality sound reproduction. It is suitable for output stages for Hi-Fi and Home Theatre receivers, sound bars, preamplifiers and active speakers, as well as many other professional audio equipment.The FAB3103UCX can also be used in combination with other audio ICs to create a high fidelity sound system. It can be used as an output stage for an audio preamplifier, which will help to improve the overall sound clarity and reduce distortion. The IC can also be combined with other audio ICs to create a fully integrated system.

Design

The FAB3103UCX has been designed to handle high power levels while maintaining low distortion and low noise levels. It has a Thermal Protection System that prevents the IC from being damaged due to excessive heat. The IC also boasts a wide dynamic range, a low input DC offset and a high SNR.The FAB3103UCX is available in a small 8-pin SOIC package, making it easy to integrate into most audio applications. It has an internal gain of 24dB and a power dissipation of 1.7W.

Operating Principle

The FAB3103UCX is based on a differential amplifying principle and has two inputs, an Input1 and an Input2, and a single output. It works by amplifying the difference between the two inputs, rather than the sum of the two. This ensures a higher signal-to-noise ratio (SNR) and better sound quality.The FAB3103UCX is designed to provide Class AB audio power amplification for both existing and new audio systems. It consists of an input differential amplifier, followed by an output buffer amplifier, based on a wideband single-ended amplifier topology. The differential input allows for a high input impedance, reducing the requirement for external pre-driver circuitry. The output buffer amplifier features an integrated PNP transistor, enabling the output short-circuit protection and thermal shutdown protection.

Conclusion

The FAB3103UCX is a high-performance audio amplifier IC designed for professional and consumer audio applications. It is an ideal choice for designing a high fidelity sound system and boasts several features, including high efficiency, low distortion and low noise. The IC is available in a small 8-pin SOIC package and features an internal gain of 24dB and a power dissipation of 1.7W. The FAB3103UCX is based on a differential amplifying principle and has two inputs, an Input1 and an Input2, and a single output. It works by amplifying the difference between the two inputs, ensuring a higher SNR and better sound quality.

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