OPA337EA/2K5

The OPA337EA/2K5 is a high performance, low power, quad precision operational amplifier from Texas Instruments. It comprises of four op-amps in one package and is capable of providing high accuracy, reliability and exceptional performance. The OPA337EA/2K5 is suitable for a broad range of precision measurement and control applications. This linear amplifier can be used as a buffer off, buffer on, or as a differential amplifier, depending on the application.

Application Field

The OPA337EA/2K5 can be used in a wide range of applications. It is ideal for use in precision instrumentation, high precision analog-to-digital converters, low speed data acquisition, and precision control systems. The device is also suitable for high gain transimpedance applications, and is particularly advantageous when used with bridge transducers, such as strain gauges, thermocouples, and other differential sensors.

The OPA337EA/2K5 is also widely used in analog filtering applications. Its features make it suitable for applications such as active filters, active gain scaling, and temperature compensation. It can be used in IF, DC or audio signal processing, for example for high-side and low-side amplifiers, differential amplifiers, and attenuators. It is also suitable for industrial applications, providing precise control of currents and voltages, such as regulated power supplies, active filtering, and precision response loops.

Working Principle

The OPA337EA/2K5 consists of four precision operational amplifiers, each of which has its own respective power amplifier. Each of these amplifiers is built around a main voltage amplifier circuit, which operates on a bipolar junction transistor (BJT). The BJT is configured in the common emitter configuration, in which the output is taken from the collector.

The OPA337EA/2K5 has a differential input with a common power supply voltage. It has an input voltage range of ±5V, and output voltage range of ±6.5V. The open loop gain of the device is typically 50dB, and the common mode rejection ratio is typically 75 dB. The maximum output current is 5 mA per amplifier.

The output of the amplifier is an inverted polarity of the input due to the common emitter configuration of the BJT. The output voltage is proportional to the change in voltage of the input. This means that any input signals can be amplified and inverted on the output. The OPA337EA/2K5 is a low power device, consuming only 170 uW/channel. The amplifier features a wide unity gain bandwidth of 10 MHz, and a large slew rate.