OPA4131NAG4

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The OPA4131NAG4 is a high-speed, low-noise, and low-power instrumentation amplifier (INA). The device is commonly used for applications such as strain and force measurement, impedance measurement, and seismometry. It is also well-suited for other applications where low noise and high-speed are desired.

Overview

The OPA4131NAG4 is an analog four-channel amplifier with a gain bandwidth product of 8GHz. It has low noise (1.9nV/√Hz) and wide bandwidth (2GHz) with a high input voltage noise of 225nV/√Hz. It is suitable for any single-supply application where low noise and wide bandwidth are required.

Features

• Extended common-mode range of ±15V
• Wide supply voltage range: 3V to 12V
• High-speed DC response
• Low input bias current: 0.5pA max
• Low input offset voltage: 0.2mV max
• High accuracy: +/-0.1%
• High CMRR: > 90dB

Application Fields

The OPA4131NAG4 is mainly used for precision measurement applications such as strain and force measurement, impedance measurement, and seismometry. It is well-suited for any single-supply application where low noise and wide bandwidth are required. One common application of the OPA4131NAG4 is as a receiver for data acquisition systems. It is also suitable for data converters and analog-to-digital converters.

Working Principle

The OPA4131NAG4 is designed to amplify signals with low noise and high bandwidth. It can be configured with three gain stages: a differential input stage with a gain of G1, a summing amplifier stage with a gain of G2, and a gain buffer stage with a gain of G3. To set the gain of the device, the gains G1, G2, and G3 can be set with external resistors.

The OPA4131NAG4 incorporates a 16-bit digital-to-analog converter (DAC) to precisely adjust the internal gains and have precise gain accuracy. The device also features a low beta internal temperature compensation resistor, which eliminates the need for external temperature compensation. The current-feedback topology of the OPA4131NAG4 ensures a high slew rate and low distortion at high frequencies.

The OPA4131NAG4 also has rail to rail input/output buffers for improved linearity and reduced distortion. The device also offers a high common-mode rejection ratio (CMRR) of 90dB with a low offset voltage. The device also has a low power consumption of 0.9mW/channel.

Conclusion

The OPA4131NAG4 is an ideal solution for high-speed, low-noise, and low-power instrumentation amplifier applications. It is suitable for any single-supply application requiring low noise and wide bandwidth. The device is widely used in precision strain and force measurement, impedance measurement, and seismometry. The OPA4131NAG4 features a 16-bit digital-to-analog converter for precise gain setting and low power consumption.

The specific data is subject to PDF, and the above content is for reference