LE75183ADSC

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LE75183ADSC Application Field and Working Principle

LE75183ADSC is a high current buffer amplifier manufactured by ON Semiconductor. As a monolithic integrated circuit, it can operate on low voltage and power levels. It is a single-ended differential amplifier with low distortion and high linearity, as well as low quiescent current. It is widely used in audio and telecommunications applications.

The LE75183ADSC is designed to buffer high current drive signals, such as in telecom applications. It is designed to drive multiple loads, like in a multiple stage output resistor network. It can also be used in multi-bit DAC applications.

Key Features

• Single supply operation from 1.8 V to 5.5 V
• High output current drive up to 200 mA
• Low quiescent current (typical 40 µA)
• Low distortion and low noise
• High linearity and wide bandwidth (up to 500 kHz)

Working Principle

The LE75183ADSC is a differential amplifier used to buffer a single input signal and amplify the current level. It consists of a high current non-inverting amplifier and a low current inverting amplifier, connected in a single-ended configuration. The non-inverting amplifier is the primary amplifier and receives the input signal. It amplifies the current level of the input signal and provides a controlled source current. The inverting amplifier has a low input bias current, which enables the input voltage to be reduced. This buffering between the two amplifiers ensures high linearity and low distortion.

The output of the LE75183ADSC is further enhanced by four large capacitors connected between the supply rails and the output pins. Those capacitors provide increased dynamic range and reduce the noise compared to other designs. The four capacitors also act as a voltage filter, reducing the effect of supply noise on the output signal.

The LE75183ADSC is optimized for high current drive, with a continuous output current sink of 200 mA. This makes it suitable for driving multiple loads, such as the multiple stage output resistor network of a multiple bit DAC. It also has a high dynamic range of up to 500 kHz, making it suitable for audio, telecom and other applications requiring high linearity and wide bandwidth.

Conclusion

The LE75183ADSC is a high current buffer amplifier manufactured by ON Semiconductor. It is suitable for audio, telecom and other applications requiring high current drive, low distortion and wide bandwidth. It is designed for single supply operation, with a continuous output current sink of 200 mA. Its low quiescent current and high linearity make it ideal for buffering signals and amplifying current levels.

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