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SY84403BLMG-TR application field and working principle

Introduction

The SY84403BLMG-TR is a fully integrated instrumentation amplifier made by Skyworks Solutions, Inc. It is designed for use in high performance test and measurement systems and is available in a 16 pin low profile surface mount package. The SY84403BLMG-TR has been designed with an optimized frequency response, gain accuracy, common-mode and power supply rejection, and low-noise performance specifically for applications such as medical instrumentation, medical scanners, data acquisition, and impendance measurement.

Application Field

The SY84403BLMG-TR is a single-channel instrumentation amplifier that was specifically designed for high-performance test and measurement systems. The device integrates many components into a single package, including a differential input stage, a precision gain setting resistor, temperature compensation circuitry, an active output stage and power supply terminals. This device is capable of providing precise gain with excellent common-mode rejection, and is used in applications such as medical instrumentation, medical scanners, data acquisition, and impedance measurement.

Working Principle

The SY84403BLMG-TR is composed of two amplifiers, an input differential amplifier, and an output buffer amplifier. The input differential amplifier has two inputs, the inverting and the noninverting inputs. The differential input of the device is configured to accept both ac and dc signals. The differential amplifier amplifies the difference in voltage between its inputs and the output of the amplifier is proportional to the input voltage difference. The output buffer amplifier is configured as a high-gain voltage follower. The high-gain of the buffer amplifier allows for the output voltage of the device to be adjusted by changing the gain setting resistor. The output voltage of the device is also directly proportional to the input voltage difference. The device also incorporates active input offset and gain error compensations, power supply rejection circuitry and active thermal shutdown for over temperature protection.

Conclusion

The SY84403BLMG-TR is a fully integrated instrumentation amplifier designed for use in high-performance test and measurement systems. The device integrates many components into a single package, including a differential input stage, precision gain setting resistor, temperature compensation circuitry, active output stage, and power supply terminals. The device is designed to provide precise gain with excellent common-mode rejection, and is suitable for use in applications such as medical instrumentation, medical scanners, data acquisition, and impedance measurement.

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