ADA4939-2YCPZ-RL

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Introduction

The ADA4939-2YCPZ-RL is a high-precision, low-power, differential-output amplifier. It is a monolithic amplifier with a wide common mode rejection ratio and low differential voltage offset error. This amplifier is designed to provide excellent precision in signal conditioning applications such as instrumentation, industrial and medical instrumentation, data acquisition systems, and test and measurement applications as well as personal computers and peripheral cards.

Application Fields

The ADA4939-2YCPZ-RL is typically used in instrumentation and industrial applications. It can be used in servo control applications, process control systems, robotics, data analysis, and network analysis. It can be used in medical instrumentation, such as digital thermometers, ECG, patient monitoring systems, and glucose monitors.

The amplifier is also suitable for use in computer systems and applications such as hard disk drives, modems, accelerometers, and vibration sensors. Additionally, its precision capability makes it suitable for use in precision test and measurement applications.

Working Principles

The ADA4939-2YCPZ-RL operates in a differential configuration, providing excellent common mode rejection and high precision without the need for ground connections. It is powered by two supplies, a positive and a negative, typically ranging from 3.3V to 18V.

In the linear region of operation, the output is an inverted replica of the input signal. When the input voltage exceeds the supply voltage, the output voltage is clamped at -Vcc, thus protecting the amplifier from overvoltage damage. The input is a single-ended amplifier with a wide common mode range that ensures dynamicity.

The amplifier is also equipped with an external shutdown pin that allows the user to control the power consumption of the amplifier. When the Shutdown pin is asserted, the differential output is disabled and the output goes to a high-impedance state. This feature allows the amplifier to have very low quiescent power consumption.

Key Features

The ADA4939-2YCPZ-RL is a high-precision differential amplifier with a wide common mode rejection ratio and low differential voltage offset error. It has a low power consumption, and an external shutdown pin allows the user to further reduce the power consumption. The amplifier offers a very high unity gain bandwidth and a wide common mode range for dynamic applications.

The amplifier can operate at a wide supply voltage range, and the output is clamped at -Vcc which helps protect the amplifier from overvoltage damage. It can operate in the linear region with a precision of up to 12-bit resolution, so it is suitable for precision control applications.

Conclusion

The ADA4939-2YCPZ-RL is a high-precision, low-power differential amplifier suitable for instrumentation and industrial applications. It has a wide common mode rejection ratio and a low differential voltage offset error, and an external shutdown pin allows the user to reduce the power consumption. The amplifier offers a very high unity gain bandwidth and a wide common mode range for dynamic applications. It is suitable for precision control applications with a precision of up to 12-bit resolution.

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