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Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

LTC2054HVIS5#TRMPBF is a complementary pair high common-mode range instrumentation amplifier operated with a single 5V supply. It offers the symmetrical high common-mode input voltage range of ±300V. This instrumentation amplifier is based on the LTC2054 Op Amp along with non-inverting gain setup. It has a unity gain bandwidth of 0.4MHz and a gain drift of 0.04ppm/°C. The high common mode input voltage and low offset voltage feature makes it suitable for high precision measurements. The drift of the zero differential input voltage is also highly stable and is 0.01µV/°C.

Application Field: The LTC2054HVIS5#TRMPBF is typically used in industrial control systems, weighing systems, process controls, RF/microwave test systems, motion control systems, biomedical instruments and custom signal conditioning. The amplifier can also be used for signal isolation, signal multiplication, signal conditioning for analog to digital conversion, and for signal sources brightness control.

Working Principle: The working principle of the LTC2054HVIS5#TRMPBF is based on the classic inverting amplifier design. The two input pins, with their complementary gain setup, accept a differential input signal and amplify it by a certain factor (G). The output of thisstage is then fed to a differential amplifier, with its inputs connected to the output of the difference amplifier and to a reference voltage. The amplified signal is then compared with the reference voltage, and the result is an output signal with an amplification factor that is equal to G. This design allows the amplifier to have excellent common-mode voltage rules and an ultra-low offset voltage, which results in an extremely low amount of noise.

In addition, the amplifier can also be used to generate a differential output signal. This is done by connecting the input of both transistors to the same signal, resulting in an output signal with a common-mode voltage of zero. Furthermore, due to the low offset voltage of the amplifier, this signal will have a small amount of distortion, resulting in an even lower noise level.

The LTC2054HVIS5#TRMPBF is a robust and reliable amplifier that can be used for a number of different applications. Its low noise and high common-mode voltage range makes it ideal for applications where precision is paramount. Also, its high gain bandwidth and low drift make it a great choice for applications such as signal conditioning and signal isolation.

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