**OP491GRUZ-REEL: Precision Quad Op-Amp for Industrial and Instrumentation Applications**

In the demanding fields of industrial automation and precision instrumentation, the performance of operational amplifiers is critical. The **OP491GRUZ-REEL**, a precision quad operational amplifier from Analog Devices, stands out as a robust solution engineered to meet the stringent requirements of these applications. This IC integrates four high-performance op-amps in a single package, offering designers a compact and reliable solution for complex signal conditioning tasks.

A key strength of the OP491 lies in its **exceptionally low input offset voltage** of 150 µV (max), which is crucial for maintaining accuracy in DC-sensitive circuits such as bridge sensors, thermocouple amplifiers, and precision current sensing. This is complemented by **ultra-low input bias current** and **high open-loop gain**, ensuring minimal error and high linearity in measurements. Furthermore, the device operates on a **single supply voltage from 3 V to 36 V**, or dual supplies up to ±18 V, providing exceptional flexibility for both portable, battery-operated equipment and rugged industrial systems powered by higher voltages.

The OP491 is designed for stability and reliability in harsh environments. It features **built-in EMI/RFI filters** on the inputs, which immunize the circuit against high-frequency noise commonly found in industrial settings. Its **rail-to-rail output swing** maximizes the dynamic range, especially critical in low-supply voltage applications. Housed in a space-saving SOIC-14 package and supplied on a REEL, the OP491GRUZ is optimized for automated assembly, streamlining high-volume manufacturing processes.

**ICGOOODFIND**: The OP491GRUZ-REEL is an outstanding choice for designers seeking a compact, precise, and versatile quad op-amp. Its combination of low noise, wide voltage range, and robust performance makes it an indispensable component for enhancing accuracy and reliability in industrial control systems, test and measurement equipment, and advanced instrumentation.

**Keywords**: Precision Op-Amp, Low Offset Voltage, Rail-to-Rail Output, Single-Supply Operation, EMI Filtering.