**ADA4084-4ARUZ: Precision Quad Operational Amplifier for High-Voltage Industrial Applications**

In the demanding world of industrial automation, process control, and test and measurement equipment, the need for robust, high-performance signal conditioning is paramount. The **ADA4084-4ARUZ** from Analog Devices stands out as a premier solution, engineered specifically to deliver precision and reliability in harsh electrical environments.

This integrated circuit is a **quad-channel, rail-to-rail output operational amplifier** that combines high voltage capability with exceptional accuracy. Its defining characteristic is its **wide supply voltage range of ±4 V to ±18 V (or 8 V to 36 V single-supply)**, making it perfectly suited for interfacing with high-voltage sensors and actuators commonly found in factory settings and industrial machinery. This high-voltage operation is complemented by outstanding DC precision, featuring a very low **input offset voltage of 75 µV (max)** and minimal drift over temperature, ensuring accurate signal amplification over time and across a wide operating range.

Beyond precision, the ADA4084-4ARUZ is built for resilience. It incorporates **integrated RFI/EMI filters** on the input stages, which drastically reduces the impact of electromagnetic interference—a frequent challenge in electrically noisy industrial plants. Furthermore, its design includes robust overvoltage protection, with inputs that can survive faults far beyond the supply rails. This ruggedness ensures system longevity and reduces the need for complex external protection circuits.

The amplifier's rail-to-rail output stage maximizes the dynamic range, which is critical when operating from a single supply voltage. Its ability to drive medium-capacitive loads also simplifies design when connecting to cables or other reactive components. With its combination of high voltage, precision, robustness, and four amplifiers in a compact package, the ADA4084-4ARUZ provides a versatile and space-efficient building block for a vast array of applications, including:

* **Industrial PLCs (Programmable Logic Controllers) and DCS (Distributed Control Systems)**

* **Power Amplifier Control and Monitoring**

* **Precision Current Sensing and Shunt Monitoring**

* **Active Filters and Instrumentation Amplifiers**

* **Test and Measurement Equipment**

**ICGOOODFIND:** The ADA4084-4ARUZ is an exceptional choice for designers seeking a **high-voltage, precision quad op-amp** that does not compromise on performance or durability. Its unique blend of **wide supply range, EMI hardening, and built-in protection** makes it a superior and reliable component for the most challenging industrial applications.

**Keywords:** High-Voltage Op-Amp, Precision Amplifier, Industrial Applications, EMI Filtering, Rail-to-Rail Output