LT1112MPS8#TRPBF

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LT1112MPS8#TRPBF Application Field and Working Principle

The LT1112MPS8#TRPBF is a low power instrumentation amplifier with an outstanding performance-to-cost ratio. It provides ±50mA of output with a high output voltage swing, a wide gain range, low noise, low offset and low drift performance.It is ideal for a wide range of applications including industrial, medical, automotive and audio systems. It has the ability to drive a wide variety of loads, including capacitive, by providing both a high power supply rejection ratio and a good high frequency performance.The LT1112MPS8#TRPBF is an ideal solution for amplifying weak signals in high front-end dynamic range applications while maintaining excellent accuracy, low power consumption and small size.The LT1112MPS8#TRPBF is a classic three op-amp instrumentation amplifier. It features a three stage architecture, with each stage releasing one op-amp with an input of one figure and an output of two figures. The third stage contains a differential gain control with an adjustable gain from 0 to 48 dB.At the first stage, two gain-setting resistors are placed externally to the device. They form a voltage divider that sets the differential gain, or gain setting of the amplifier. The output of this first stage is connected to the non-inverting (positive) input of the second stage, which is the summing amplifier.At the second stage, two non-inverting amplifiers are used to provide an adjustable gain control by providing an inverted output back to the first stage. The output of this stage is connected to the inverting (negative) input of the third stage.At the third stage, the differential amplifier will compare the negative input to the positive input and amplify the difference. This produces the desired gain.At the output, the LT1112MPS8#TRPBF provides a maximum output voltage swing of 25V. Furthermore, it offers a wide range of gains, from 0.1 to 200, and a low input offset voltage of 1mV.In conclusion, the LT1112MPS8#TRPBF is a low-power, precision instrumentation amplifier with outstanding performance. By providing excellent AC performance, low power consumption and small size, it is ideal for use in a wide range of applications.

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