MC3487DR – TEXAS INSTRUMENTS

The MC3487DR is a monolithic integrated circuit from ON Semiconductor, specifically a dual operational amplifier designed for low-power, high-gain applications. It operates from a single supply voltage ranging from 2.7V to 16V, exhibiting excellent input bias current characteristics, typically less than 50nA. Packaged in a space-saving 8-lead PDIP (plastic dual in-line package), it offers high input impedance (typically >10MΩ) and a relatively high gain-bandwidth product, allowing for stable operation at frequencies extending into the MHz range. Its low-power consumption makes it ideal for battery-powered systems._x000D_
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The MC3487DR is particularly well-suited for instrumentation amplifiers requiring high precision and low drift, sensor signal conditioning circuits, and precision analog signal processing applications where low noise and high input impedance are critical. Its dual op-amp configuration allows for versatile circuit designs, such as instrumentation amplifiers built with a single chip, eliminating the need for multiple discrete op-amps. The device’s inherent stability minimizes the need for external compensation components, simplifying circuit design and reducing board space. However, designers should be aware of its relatively low output current capability, limiting its suitability for driving high-capacitive loads directly.