TEXAS INSTRUMENTS LM2903D Dual Differential Comparator, 8-Pin SOIC

The TEXAS INSTRUMENTS LM2903D is a high-performance, dual differential comparator housed in a compact 8-pin SOIC (Small Outline Integrated Circuit) package. This integrated circuit contains two independent voltage comparators, designed for reliable operation from a single power supply across an exceptionally wide voltage range of 2V to 36V. It also supports dual-supply operation, provided the difference between the two supplies stays within the 2V to 36V range and VCC is at least 1.5V more positive than the input common-mode voltage.

A key advantage of the LM2903D is its remarkably low power consumption; the supply current drain is independent of the voltage and is typically just 0.4mA per comparator. This makes it an ideal choice for battery-powered and energy-sensitive applications. The device offers excellent precision with a low input bias current (typically 25nA) and a low input offset voltage (typically 2mV), ensuring accurate signal comparison.

The comparator's input common-mode voltage range includes ground, allowing it to handle signals that swing down to the negative rail. Its differential input voltage range is equal to the maximum rated supply voltage of ±36V. The outputs are open-collector type, which can be conveniently connected to other open-collector outputs to create wired-AND logic relationships. The output saturation voltage is low and is fully compatible with TTL, MOS, and CMOS logic families, providing great flexibility in system design.

Built for robust performance in diverse environments, the LM2903D operates across a wide temperature range from -40°C to 125°C. Its combination of wide supply range, low power, high precision, and logic compatibility makes it a versatile and reliable component for a multitude of electronic designs.