U4083B, Low-power Audio Amplifier , 2V to 16V, 400mW Output Power

The U4083B is a low-power audio amplifier IC designed for telephone applications with differential speaker outputs. This amplifier is optimized to deliver maximum output swing at low supply voltages, making it ideal for battery-operated systems. It features a wide operating voltage range of 2V to 16V and offers a low current consumption of just 2.7mA. The U4083B has an open-loop gain of 80dB and a gain bandwidth product of 1.5MHz, providing robust performance with minimal external components. It includes power-down and mute capabilities for energy-efficient operation.

Its output power can reach up to 400mW, making it suitable for driving a wide range of speaker loads. This IC is commonly used in telephone speaker systems, intercoms, and other audio applications requiring efficient amplification with low distortion.

Key Features :

• Wide operating voltage range: 2V to 16V for flexibility in various applications.
• Low current consumption: 2.7mA typical at standard conditions.
• Open-loop gain of 80 dB and closed-loop gain adjustable from 0 dB to 46 dB.
• Differential speaker outputs for efficient output swing at low voltages.
• Output power up to 400mW, suitable for driving 8Ω speakers.
• Built-in power-down and mute functions for energy efficiency.