The LM311 Differential Comparator Op-Amp is a highly reliable and versatile integrated circuit from Texas Instruments, widely used for voltage comparisons in various electronic designs. With its long history of application in numerous projects, this comparator IC has proven to be a fundamental component in the realm of electronics. Its compatibility with popular platforms such as Arduino and its potential for use in digital multimeters and FM stereo applications make it a valuable addition to any electronics enthusiast's or professional's toolkit.

Specifications:

• High gain: 10000 min, 20000 typ


• Low input offset voltage: 0.7 mV max, 2.0 mV typ


• Low input bias current: 20 nA max, 50 nA typ


• High common mode rejection ratio: 100 dB min, 120 dB typ


• Differential input voltage range: ±15V


• Supply voltage range: ±5V to ±15V

Applications:

• Arduino projects requiring voltage comparison, such as sensor reading and threshold detection


• Digital multimeter circuits for precise voltage measurements


• FM stereo decoder and demodulator circuits


• MEGA 2560 based projects that require accurate voltage comparisons


• General-purpose voltage comparator applications in electronic designs