LM258AYDT

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LM258AYDT Application Field and Working Principle

The LM258AYDT is a general-purpose linear amplifier featuring high precision, low power consumption, and low distortion as well as low slew rate. It is suitable for a wide range of applications from low-level signal conditioning to transimpedance amplifiers. The LM258AYDT is a monolithic unit with two n-channel and two p-channel transistors, a balanced differential input, a bandpass filter, and a power amplifier in a single package.

The LM258AYDT can be used in a variety of applications which require a high input impedance, wide dynamic range, low-level noise reduction, high-current drive capability, and accurate frequency response. This amplifier can be used to accurately condition signals such as temperature, pressure, strain gage inputs, self-test diagnostic feedback, and charging of capacitive sources.

The LM258AYDT has a typical gain of 12.9 dB (50 kHz) with an input voltage range of 0.2 to 0.7 V and a power supply of ±7.5 V. It has a high input impedance – 4.0 KΩ single-ended, 10 KΩ differential – and its noise characteristics offer low-level noise reduction. The band-pass filter reduces noise signals whilst maintaining a high speed of operation. The current drive capability of the LM258AYDT is 20 mA peak and 2.4 mA steady state.

Working Principle

The LM258AYDT Instrumentation Op-Amp is designed to provide high-precision amplification at low power consumption. It uses a differential amplifier to achieve high gain accuracy whilst minimizing distortion and eliminating noise. The differential amplifier provides a balanced input signal and its output is a low-level noise free signal.

The band pass filter in the LM258AYDT is used to reduce noise and unwanted signals, allowing for a higher signal-to-noise ratio. This filter is tuned to the optimum frequency range for the application, and its frequency response can be adjusted to suit the requirements. The output of the amplifier is then buffered and attenuated, providing a correct signal level with minimal distortion.

The LM258AYDT provides high-precision performance, low power consumption, and low distortion. It is suitable for a wide range of applications, including low-level signal conditioning, transimpedance amplifiers, self-test diagnostics, and capacitive sources.

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