LM2903 Descriptions

The LM2903 is made up of two separate voltage comparators that can operate over a wide variety of voltages from a single power supply. Dual-supply operation is also conceivable if the difference between the two supplies is between 2 and 36 V and Vcc is at least 1.5 V higher than the input common-mode voltage. The supplied voltage has no effect on the current drain. To achieve wired-AND relationships, the outputs can be coupled to other open-collector outputs.

LM2903 Features

• 25 nA Low Input Bias Current (Typical)

• 2 mV Low Input Offset Voltage (Typical)

• Low Input Offset Current (Typical): 3 nA (LM139)

• Ground is included in the common-mode input voltage range.

• Low Supply-Current Drain: 0.4 mA (Typical) Per Comparator, Independent of Supply Voltage

LM2903 Applications

• Weighing Scale

• Desktop computer

• AC Induction Motor Control

• Sensors that detect chemicals or gases