**LT1997IMS-2#PBF: A Precision, Wide Voltage Range Difference Amplifier**

In the realm of analog signal conditioning, accurately measuring small differential signals buried within high common-mode voltages is a persistent challenge. The **LT1997IMS-2#PBF** from Analog Devices stands out as a premier solution, engineered to deliver **high precision and robust performance** in demanding applications. This difference amplifier integrates superior accuracy, a remarkably wide operating range, and rugged protection into a compact MSOP package.

The core strength of the LT1997IMS-2#PBF lies in its ability to handle **input common-mode voltages from -15V to 80V**, independent of its supply voltage. This exceptional range makes it indispensable for industrial control, automotive, and telecommunications systems, where signals often ride on top of large voltage offsets. The device features a fixed gain of 2, achieved with precisely matched internal 25kΩ resistors, resulting in a **typically 0.04% gain error** and a high common-mode rejection ratio (CMRR) of 94dB. This ensures that the amplified output accurately reflects the differential input signal while effectively rejecting noise and interference common to both inputs.

Beyond its precision, the LT1997 is built for resilience. Its inputs are protected against **differential and common-mode overvoltages up to ±500V**, a critical feature for harsh electrical environments prone to voltage transients, surges, and miswiring. This robust design safeguards both the amplifier and the downstream circuitry, enhancing system reliability and longevity.

The device operates over a wide supply range of 2.5V to 18V, drawing a minimal supply current, which is ideal for portable and low-power applications. Its low offset voltage and drift contribute to maintaining accuracy across temperature variations from -40°C to 125°C.

Typical applications include:

* **High-side current sensing** in motor controls and battery management systems.

* **Line monitoring** in power distribution and telecom infrastructure.

* **Bridge amplifier** circuits for precision sensors.

* **Overcurrent fault detection** with high voltage thresholds.

ICGOOODFIND: The LT1997IMS-2#PBF is an exceptional difference amplifier that combines high accuracy, an ultra-wide input voltage range, and rugged overvoltage protection. It simplifies design, reduces external component count, and provides a reliable, precision solution for challenging signal conditioning tasks.

**Keywords:** Difference Amplifier, High Common-Mode Voltage, Precision Measurement, Overvoltage Protection, Current Sensing.