**AD8202YRMZ-R7: A High-Performance, 70V Difference Amplifier for Precision Current Sensing**

In the realm of industrial automation, motor control, and power management systems, **accurate current sensing is a critical requirement** for ensuring efficiency, safety, and reliability. The AD8202YRMZ-R7 from Analog Devices stands out as a premier solution, engineered to deliver **high-precision measurements in high-side current shunt applications** where common-mode voltages can be exceptionally high.

This monolithic difference amplifier is distinguished by its ability to operate with a common-mode voltage of -2V to +70V, independent of its supply voltage, which can be as low as +3V. This capability makes it exceptionally versatile, capable of functioning correctly even when the input signal is riding on a high-voltage rail. The device integrates a **precision op amp and a laser-trimed thin-film resistor network** onto a single chip. This integration is key to its performance, ensuring **excellent common-mode rejection ratio (CMRR)** of 80 dB (min) from DC to 20 kHz and outstanding gain accuracy. The fixed gain of 20 V/V is ideal for amplifying the small voltage drops across a current-sensing shunt resistor.

A significant advantage of the AD8202YRMZ-R7 is its **enhanced performance in harsh electrical environments**. It offers outstanding CMRR even as input frequencies rise, a common challenge that can introduce error in less robust amplifiers. Furthermore, its wide operating temperature range of -40°C to +125°C makes it suitable for demanding applications in automotive, industrial, and aerospace systems. The integrated design also provides superior stability and reliability by matching the temperature drift of the internal resistors, a feat difficult to achieve with discrete solutions.

The device is offered in the compact MSOP-8 package, making it an excellent choice for space-constrained PCB designs. Its combination of high voltage capability, precision, and integration simplifies system design, reduces component count, and ultimately improves overall system reliability and performance.

**ICGOOODFIND:** The AD8202YRMZ-R7 is a robust, highly integrated difference amplifier that **simplifies precision high-side current sensing** in high-voltage environments, offering designers a reliable and accurate solution that minimizes design complexity and maximizes performance.

**Keywords:** Precision Current Sensing, High Common-Mode Voltage, Difference Amplifier, High CMRR, High-Side Monitoring