XR8052ASO8

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The XR8052ASO8 is a single-channel rail-to-rail input/output CMOS instrumentation amplifier (INAMP) from Exar Corporation. It is part of their XR family of CMOS devices and is designed to provide low power and cost-effective solutions in industrial and medical instrumentation systems. This device is targeted at applications such as pressure and strain measurements, instrumentation data acquisition systems, medical patient monitoring and other low-power sensor interfacing applications.

Overview

The XR8052ASO8, with a small 6-Pin SC-70 package, integrates numerous elements of a typical instrumentation amplifier system, including a pair of voltage-feedback amplifiers, programmable gain control and power up/down control. The XR8052ASO8 provides high precision solutions with rail-to-rail input and output operation, single-ended or dual-supply voltage range, high accuracy, low cost and low power operation.

Features

The XR8052ASO8 offers the following features:

• Wide supply voltage range from 2.7 V to 5.5 V
• Input and output range from rail to rail
• Low power consumption of 0.5 mA/channel
• Low cost
• Input and output buffering with adjustable gain
• Programmable high-pass and low-pass filters
• Additional power-down control
• Diagnostic self-test feature

Working Principle

The XR8052ASO8 is a two-in, two-out instrumentation amplifier (INAMP) with a single-ended output. The amplifier consists of two programmable gain stages, a high-pass filter, a low-pass filter, input and output buffers and gain select option. Each gain stage consists of an inverting and a non-inverting input buffer, a pair of output buffers, and gain programming capacitors. The gain of each gain stage can be programmed using external capacitors. Each stage has a gain range of between 1 and 200 V/V. The input and output buffers have rail-to-rail performance and allow biasing of each stage 150 mV below the power supply rails. The high-pass and low-pass filters are designed to reject AC signals, enabling accurate measurements over long-term changes in the signal. The additional power-down control allows the XR8052ASO8 to be shut off when not in use. The device also features a diagnostic self-test function which allows for precise testing and diagnostics of the system.

Applications

The XR8052ASO8 is suitable for use in a variety of industrial and medical instrumentation systems. It is ideal for applications such as pressure and strain measurements, instrumentation data acquisition systems, medical patient monitoring, and other low-power sensor interfacing applications. The device can also be used in audio, gaming, automotive, and control systems.

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