OPA4322AQPWRQ1

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The OPA4322AQPWRQ1 is a linear instrumentation operational amplifier designed for simultaneous, dual-supply operation from 1.8V to 36V. This amplifier combines a wide bandwidth, low distortion and high accuracy while providing superior power efficiency and superior common mode rejection ratio. It is ideal for driving active loads, high impedance source and differential or quasi-differential measurement applications.

Features

• Low-power, low-distortion and high-speed operation
• Wide output swing swing over the supply range
• Input offset voltage as low as 0.5mV
• TRMS output current of 1A
• Low-noise operation
• High common-mode rejection ratio of 90dB
• High power-efficiency with power-saving control logic

Applications

• Medical instruments
• Audio/video amplifiers
• Industrial control systems
• Difference amplifiers
• Instrumentation amplifiers
• Current-to-voltage converter
• Automatic gain controllers
• Audio signal processing

Working Principle

The OPA4322AQPWRQ1 uses a high-performance, low-distortion amplifier topology to provide high accuracy and wide bandwidth. The device is a rail-to-rail operational amplifier that can operate over a wide supply range of 1.8V to 36V with a low voltage noise of 10nV/√Hz. The device features a wide output swing of ±8V over the supply range and a high open loop gain of up to 135dB. It also features a unity-gain stable architecture and superior input and output impedance.The device has a low-bias current of 1pA and a high common-mode rejection ratio of 90dB. The device also provides high input impedance of >1TΩ.

The device uses a unique power saving control logic to reduce the power consumption over the wide operating range. It also features low-noise operation with a low-noise figure of 0.07nV/√Hz. It can also handle large signal swings over the 0V to 36V supply range without distortion.

The device can be used as a variable gain amplifier, as an automatic gain controller, as a current-to-voltage converter and as an instrumentation amplifier. It can also be used in audio signal processing applications, automatic gain control and industrial control systems. It provides superior accuracy and low distortion for driving active loads, high impedance source and differential or quasi-differential measurement applications.

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