**LT1990IS8#TRPBF: A Precision, Wide Voltage Range Difference Amplifier from Analog Devices**

In the realm of analog signal processing, accurately measuring small differential signals buried within large common-mode voltages is a perennial challenge. Addressing this need with exceptional performance and robustness, the **LT1990IS8#TRPBF from Analog Devices** stands out as a premier difference amplifier solution. This integrated circuit is engineered to deliver high precision and reliability across a vast array of industrial, automotive, and communications applications.

The core functionality of the LT1990 is to amplify the voltage difference between its two inputs while rejecting any voltage common to both. What truly sets this amplifier apart is its **remarkably wide input voltage range**. It can handle common-mode voltages from -15V to 80V, independent of the supply voltage. This makes it an indispensable component for direct monitoring in high-voltage systems such as **48V automotive battery systems, industrial motor controllers, and power supply current sensing**, without the need for additional external attenuation circuits.

Precision is another cornerstone of the LT1990's design. The device boasts a **high common-mode rejection ratio (CMRR)**, typically 86dB at DC, which ensures that the amplified output is a faithful representation of the differential input signal, largely unaffected by noise or fluctuations on the input lines. Furthermore, its **excellent DC accuracy**, characterized by a maximum input offset voltage of just 350µV and a gain error of only 0.3%, guarantees reliable and precise measurements critical for system control and fault detection.

Housed in a compact 8-lead SOIC package (denoted by the IS8#TRPBF suffix), the LT1990 offers a fixed gain of 10 V/V (LT1990-10), with other variants providing gains of 1 and 100. Its integrated precision resistor network is laser-trimmed for accuracy and maintains stable performance over temperature, simplifying design-in and reducing the bill of materials compared to discrete solutions.

**ICGOODFIND**: The LT1990IS8#TRPBF is a robust, high-performance difference amplifier that excels in demanding environments. Its unparalleled combination of a wide input range, high CMRR, and precision DC characteristics makes it a superior choice for designers seeking to simplify high-voltage differential sensing with guaranteed accuracy and reliability.

**Keywords**: Difference Amplifier, Wide Common-Mode Range, High CMRR, Precision Measurement, Current Sensing.