Threshold accuracy and noise rejection
The MAX969ESE+: With 56.48 dB CMRR and 80 dB PSRR, the comparator maintains threshold accuracy in the presence of common-mode noise and power-supply ripple, which is critical for reliable operation in electrically noisy environments like motor-drive cabinets or factory-floor sensor interfaces. The ±1 mV hysteresis prevents output oscillation when the input signal crosses the threshold slowly, a common failure mode in battery-voltage monitoring or temperature-sensor comparators that can cause false triggering in downstream logic.
Output flexibility and power budget
Maximum quiescent current is 22 µA per device, so all four comparators draw under 90 µA total, fitting into low-power sensor nodes or battery-backed monitoring circuits where every microamp matters. The 20 µs maximum propagation delay sets the response time ceiling — adequate for overvoltage/undervoltage detection and threshold monitoring at sub-50 kHz rates, but not for high-speed zero-crossing or pulse-width modulation applications.