ISL76627ABZ

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ISL76627ABZ Application Field and Working Principle

The ISL76627ABZ is a wideband instrumentation amplifier (IA) designed for operation in high frequency instrumentation, data acquisition, and control applications. By combining its wide bandwidth, low differential nonlinearity, and high dynamic range, the ISL76627ABZ improves the accuracy and performance of automatic test equipment and data acquisition systems.

Fields of Application

The ISL76627ABZ is suitable for many applications, including laboratory test and measurement, industrial automation process control, medical data acquisition, and interface designs. Its low power consumption, broad bandwidth and high slew rate make it an ideal choice for a wide range of high frequency applications.

• Laboratory Test and Measurement
• Industrial Automation Process Control
• Medical Data Acquisition
• Interface Designs

Working Principle

The ISL76627ABZ IA is based on an operational transconductance amplifier (OTA) circuit and a current feedback chain to achieve excellent dynamic performance and superior bandwidth. The OTA provides the bias functions and low frequency gains. The input impedance is high and the nonlinearity is low over the entire frequency range.

The output stage of the IA combines an OTA with a high-speed current buffer, driving a matched output FET pair configured with a push-pull output stage. The current buffer offers an exceptionally low output impedance with excellent bandwidth and low distortion. The output stage and a multiple-stage MOSFET current mirror provide a low output impedance, high output drive capability, and excellent filtering of capacitive loads.

The ISL76627ABZ IA also offers wide dynamic range and excellent common mode rejection ratio (CMRR). The differential input and output of the IA are guarded to reduce stray capacitance, and the monolithic integrated design reduces power dissipation and allows stable operation in harsh environments. The advantage of the IA is that it provides superior performance, in spite of its small size and low power consumption.

Conclusion

The ISL76627ABZ IA is a high performance wideband instrumentation amplifier designed for use in high frequency instrumentation, data acquisition, and control applications. The IA combines wide bandwidth, low differential nonlinearity, and high dynamic range with low power consumption and a small size. The IA is suitable for many applications, including laboratory test and measurement, industrial automation process control, medical data acquisition, and interface designs.

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