AD8674ARZ-REEL

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The AD8674ARZ-REEL linear amplifier belongs to the instrumentation and operational amplifiers, buffer amplifiers family. It is a low-noise, low-power, precision amplifier, suitable for instrumentation and signal conditioning applications. This amplifier delivers significant noise reduction and improved signal fidelity, thanks to its improved high common-mode rejection performance.

The AD8674ARZ-REEL is available in a range of packages, including an SOIC-16 surface mount package and a TSSOP-16 surface mount package. It is designed to provide low offset voltage and low input noise. The amplifier features a fixed gain of +2V/V and can operate with a voltage range that spans from 3.2V to 15V.

As a high-precision amplifier, the AD8674ARZ-REEL can be used in medical, industrial, and military applications, such as seismic and inertial navigation systems, accelerometers, bridge sensors, and optical encoders. In many applications, the amplifier can be used to isolate, buffer, and amplify or attenuate an input signal and to reproduce that signal at its output.

The working principle of the AD8674ARZ-REEL is based on the operational amplifier architecture. The amplifier consists of three stages: input stage, intermediate stage and output stage. The input stage includes the input stage amplifier, which consists of two differential transistors that are biased in a differential mode. The intermediate stage is the gain stage, which consists of a common-mode feedback amplifier, which serves to increase the common-mode rejection ratio (CMRR) and reduce the noise figure of the amplifier. The output stage is the voltage amplifier, which consists of an open-collector pair of transistors.

The amplifier\'s high-common-mode rejection performance is due to the effective compensation created by the open-collector voltage amplifier, which is highly linear and operates independently of common-mode level. As a result, the AD8674ARZ-REEL eliminates the need for external compensation components, allowing for simpler and lighter system designs.

The AD8674ARZ-REEL is ideal for applications that require high precision and low noise performance. Its high CMRR and low input noise makes it suitable for use in demanding applications such as instrumentation and signal conditioning. It is best suited for use in challenging environments that require a low offset voltage and low noise such as medical, industrial, automotive, and aerospace applications.

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