The LM3900N Quad Norton Operational Amplifier is a unique and versatile analog IC designed for current-mode (Norton) amplifier applications. Supplied in a standard 14-pin DIP through-hole package, it is well suited for breadboarding, prototyping, repairs, and educational electronics projects.
Unlike conventional voltage-mode op-amps, the LM3900N operates using current inputs, offering excellent performance in audio processing, waveform shaping, active filters, oscillators, and signal summing applications. With four independent amplifiers in a single package and the ability to operate from a single supply, it remains a popular choice for both classic and modern analog designs.
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