**ADA4084-1ARJZ-R2: Precision 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 and precise signal conditioning is paramount. Operational amplifiers (op amps) sit at the heart of these systems, and selecting the right one is critical for ensuring accuracy, reliability, and longevity. The **ADA4084-1ARJZ-R2** from Analog Devices emerges as a premier solution, engineered specifically to excel in **high-voltage, high-precision industrial environments**.

This device is a single-channel, precision op amp that combines a wide operating voltage range with exceptional accuracy. Its defining characteristic is its ability to operate from a **single supply voltage from 4 V to 30 V or dual supplies at ±2 V to ±15 V**. This flexibility allows designers to power the amplifier directly from standard industrial power rails (such as ±12V or ±15V) or from lower single-supply sources, simplifying system power architecture.

Precision is a cornerstone of the ADA4084-1ARJZ-R2's performance. It features an ultra-low input offset voltage of 75 µV (max) and a negligible input offset voltage drift of just 0.6 µV/°C. These specifications are crucial for minimizing DC errors in applications like bridge sensor amplification (e.g., for pressure, force, or temperature) and precision current sensing, ensuring that the signal output is a true representation of the measured phenomenon.

Beyond precision, the amplifier is built for **rugged industrial environments**. It incorporates integrated EMI filtering at the input, which mitigates the impact of electromagnetic interference ubiquitous in industrial settings. Furthermore, it is designed with **robust overvoltage and fault protection**. The inputs can withstand voltages up to 32 V beyond the supply rails without being damaged or latching, a common occurrence in harsh electrical environments where fault conditions and transients are likely.

Other key features include:

* **High Common-Mode Rejection Ratio (CMRR):** 140 dB minimizes errors from noise on the input signals.

* **Low Input Bias Current:** 5 nA max is essential for applications using high-impedance sensors.

* **Adequate Bandwidth:** 3.5 MHz gain-bandwidth product supports a wide range of signal frequencies.

* **Stable Operation:** It is unity-gain stable, with phase margin ensured by integrated compensation capacitors, simplifying design.

The ADA4084-1ARJZ-R2 is offered in a compact SOIC-8 package and is specified over the extended industrial temperature range (-40°C to +125°C), making it suitable for virtually any factory floor or outdoor application. Its primary uses include:

* Precision data acquisition systems

* Industrial process control and automation

* Test and measurement equipment

* Transducer and sensor interface circuits

* High-side and low-side current sensing

**ICGOOODFIND**: The ADA4084-1ARJZ-R2 stands out as a **highly reliable and precise operational amplifier** that successfully bridges the gap between high voltage and high accuracy. Its integrated protection features and EMI hardening make it an **ideal, robust choice for designers** tackling the challenging conditions of modern industrial applications, ensuring both performance and system durability.

**Keywords**:

1. Precision Operational Amplifier

2. High-Voltage Operation

3. Industrial Applications

4. EMI Filtering

5. Overvoltage Protection