The LM2901 is a low-power quad voltage comparator with a wide voltage range, low operating current, and low output saturation voltage.
This document is a technical datasheet for the LM2901, a low-power quad voltage comparator manufactured by STMicroelectronics. The device consists of four independent precision comparators designed to operate from a single supply over a wide range of voltages (+2 V to +36 V) or split power supplies.
Key features include very low supply current (1.1 mA), low input bias and offset currents, and an input common-mode voltage range that includes the negative rail even when operated from a single supply. The datasheet provides absolute maximum ratings, electrical characteristics tables, typical application schematics for various circuits such as zero-crossing detectors and oscillators, and package information.
| Supply Voltage Range (Single) | +2 V to +36 V |
|---|---|
| Supply Current (Typical at 5V) | 1.1 mA |
| Input Bias Current (Typical) | 25 nA |
| Operating Temperature Range | -40 to +125 °C |
| Output Saturation Voltage (Typical) | 250 mV |
The supply current is typically 1.1 mA and is independent of the supply voltage.
Yes, it is designed specifically to operate from a single supply over a wide range of voltages.
Yes, this is a unique characteristic where the input common-mode voltage range includes the negative rail.