Dual comparator with 20 µA quiescent draw
The LMC6772BIM from Texas Instruments is a dual, micropower comparator that draws a maximum quiescent current of 20 µA across its full supply range of 2.7 V to 15 V single supply or ±1.35 V to ±7.5 V dual supplies. Each comparator features open-drain outputs, rated for 30 mA sink current, and a maximum propagation delay of 10 µs — suitable for level detection, window comparators, and sensor threshold monitoring in battery-powered or low-power industrial control loops.
Industrial temperature range and SOIC-8 footprint
Rated for operation from -40°C to +85°C, the LMC6772BIM covers the industrial temperature grade, making it appropriate for factory-floor sensor interfaces, HVAC controllers, and power-supply monitoring circuits that see ambient temperature swings. Housed in an 8-pin SOIC package (3.90 mm width), the device mounts on standard surface-mount pads and is supplied in bulk tube packaging — a common format for prototype builds and low-to-medium volume production runs.
Input offset and bias characteristics at 5 V
Maximum input offset voltage is 15 mV at 5 V, and the input bias current is specified at a maximum of 0.04 pA at 5 V — the CMOS input stage keeps the bias current negligible, which matters when the comparator is driven by high-impedance sources such as photodiode amplifiers or pH sensor electrodes. Typical common-mode rejection ratio (CMRR) is 75 dB, and power-supply rejection ratio (PSRR) is 80 dB, providing reasonable immunity to supply ripple and common-mode voltage shifts in noisy industrial environments.