AD8659ACPZ-RL

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The AD8659ACPZ-RL is an instrumentation amplifier designed for high-accuracy signal amplification for various applications. It provides excellent temperature drift and high power supply rejection across a wide range of frequencies. Its wide range of operating frequencies and low noise floor makes it an ideal choice for precision analog metering and signal conditioning applications.

The AD8659ACPZ-RL is based on a differential amplifier topology, with two gain stages. The first stage of the amplifier is a differential input transimpedance amplifier, which provides an input bias current with a gain of approximately 2V/V. This is followed by a high-impedance voltage follower that supplies a constant output voltage.

The amplifier has a maximum input of ± 5 V and a full-scale output of up to ± 20 V. It is available in two precision grades: basic (RL) and high (HC). The AD8659ACPZ-RL opens up the potential applications for low-level signal conditioning in low-noise, high power supply rejection environment.

The main application fields of the AD8659ACPZ-RL are metering and measurement, medical electronics and RF signal conditioners. This amplifier is suitable for in-line signal isolation, instrumentation, low frequency measurement, precision feedback control and other low-input dynamic signal-processing applications.

The working principle of the AD8659ACPZ-RL is based on the concept of trans-impedance amplification. This amplification can be achieved by using a combinational arrangement of resistors and capacitors. The amplifier has two sets of active components, i.e. two input bias currents and two voltage follower stages.

The first stage works as a differential transimpedance amplifier which converts the differential input signal into a low level current signal. The output of this stage is further amplified and buffered by the second stage, which is a voltage follower. This voltage follower stage acts as a buffer and isolates the first stage from the load.

The AD8659ACPZ-RL can operate with a gain of up to 2 V/V, and is designed for low-noise, high-gain operation. In addition, it can be powered by a single power supply, and has a high power supply rejection ratio (PSRR) of 80 dB typical. This makes it ideal for applications where low noise, high-gain operation, and high PSRR are required.

As far as operating temperature range is concerned, the AD8659ACPZ-RL is rated to perform in industrial temperature ranges, such as -40°C to 85°C, thus making it suitable for many industrial applications. In addition, it is specified to operate with a single 3 V power supply, and has a high power supply rejection ratio (PSRR) of 80 dB typical.

In summary, the AD8659ACPZ-RL is an ideal solution for high accuracy, low noise, high power supply rejection and wide operating temperature range applications. Its wide range of operating frequencies, low noise floor and high power supply rejection ratio make it an ideal choice for precision analog metering and signal conditioning applications.

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