LT1636HS8#TRPBF

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The LT1636HS8#TRPBF is part of a category of linear amplifiers called instrumentation amplifiers. These amplifiers are designed for accurate signal acquisition, signal conditioning, and monitoring analog sensor electronics. An instrumentation amplifier is a differential amplifier with an adjustable gain, often used in measurement and signal conditioning applications. It is designed to have a high input impedance and output impedance that is lower than the resistive components. The LT1636HS8#TRPBF is a rail-to-rail input and output current feedback instrumentation amplifier.

Application Field

The LT1636HS8#TRPBF is specifically designed for precision amplifier systems. It integrates a unity gain and high common-mode rejection options with adjustable current-feedback gain and coupled with excellent EMI performance. It is appropriate for applications that involve very small signals, such as in biomedical instrumentation, precision sensor measurement, instrumentation for industrial control and automation, and advanced test and measurement applications. Some of its advanced features include: rail to rail input and output, low high input offset voltage, wide gain range from 5 to 10000, and adjustable current-feedback gain.

Working Principle

The LT1636HS8#TRPBF is a unity-gain instrumentation amplifier that uses current feedback technology for its gain. The amplifier is composed of three main stages: input stage, differential amplifier stage, and output stage. The input stage is where the signal is introduced to the amplifier and converts single ended input signals to differential signals. The differential amplifier stage amplifies the differential inputs and the output stage performs level shifting and converts the differential signals back to single ended outputs. This instrumentation amplifier is optimized for highest accuracy and linearity in wide gain and frequency ranges.

The gain of the LT1636HS8#TRPBF has two components, the fixed gain and the adjustable gain. The fixed gain is set with resistor divider R1-R2 and the adjustable gain is set with the current feedback loop of the amplifier. When the current feedback loop is enabled, the gain of the amplifier is set by the resistor R4-R5 divider. The voltage gain of the amplifier is the product of the fixed gain and the current feedback gain. The faster and smoother the current control loop operates, the higher the linearity and accuracy of the amplifier.

Another important feature of this instrumentation amplifier is its high input impedance. Its high input impedance allows for low noise operation and less distortion in small-signal applications. This feature is useful for accurate signal conditioning for environment monitoring and biomedical instrumentation applications. The LT1636HS8#TRPBF also has excellent EMI performance due to its protective capacitors and the current feedback loop.

Conclusion

The LT1636HS8#TRPBF is a versatile, precision amplifier system suitable for applications involving very small signals. It features rail-to-rail input and output, low high input offset voltage, wide gain range from 5 to 10000, and adjustable current-feedback gain. The high input impedance and current feedback loop ensure low noise operation and excellent EMI performance. The LT1636HS8#TRPBF is an ideal solution for applications such as biomedical instrumentation, precision sensor measurement, instrumentation for industrial control and automation, and advanced test and measurement applications.

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