AD585SE

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The AD585SE chip is a 8-pin surface mount instrumentation amplifiers with low offset and drift, high speed and wide bandwidth output. The AD585SE is an ideal choice for any precision challenges, such as enabling wide dynamic range for data acquisition systems and offering high input impedances for strain gage amplifiers. With its low drift, fast settling and wide frequency response, the AD585SE provides a high performance and cost effective solution for any application.

AD585SE Application Field

The AD585SE has broad application field in instrumentation, automotive, medical and sensor data acquisition. Instrumentation application includes 4-20mA loop current measurement, strain gage amplifiers, flow and level measurement. Applied automotive applications include current sensing, engine management systems, and flow rate measurement. In medical area, the AD585SE can be applied for blood pressure measurement, patient monitor and ECG/EKG measurements. Meanwhile, its wide input range and low offset make it an ideal choice for various sensor data acquisition systems.

Working Principle

The AD585SE is an instrumentation amplifier. It consists of two internal unity gain stages. The first stage is an input buffer which converts the differential input into a single ended signal which then is amplified by the second stage. This op amp has gain-configurable gain from 1 to 1000, low offset voltage and drift, wide bandwidth, low noise and high input resistance.Moreover, its low power consumption, wide supply voltage range, and small footprint make the AD585SE convenient to use in various applications.

The input stage is a low noise buffer amplifier that provides a single ended output equivalent to the differential input. It takes the differential input and separate it into two differential signals. The second stage is an amplifying buffer which provides an output with gain, offset and drift. This stage amplifies the input signal while keeping the low offset and drift.

The output stage provides an output with gain, offset and drift. It is designed to match the optimal performance of the second stage. It is capable of providing a very large output swing with low distortion. This can be used to drive the next stage or to drive an analog-to-digital converter, for example.

Conclusion

The AD585SE is an ideal solution for any precision challenge as it offers fast settling, low offset and drift, wide bandwidth output and high input impedances. Applications of this chip range from instrumentation, automotive, medical and sensor data acquisition, such as 4-20mA current loop, strain gage amplifiers, flow and level measurement and patient monitor. The AD585SE consists of two unity gain stages. The first stage is a low noise buffer amplifier and the second stage is an amplifying buffer. The output stage provides an output with gain, offset and drift for the optimal performance of the system. Its low power consumption, wide supply voltage range, and small footprint make the AD585SE a great choice for various applications.

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