Active production — single-supply comparator for low-power threshold detection
The MAX9120EXK+T: With a maximum quiescent current of 1.2 µA and a propagation delay of 45 µs, this comparator balances low power consumption against a response time that catches slow-moving analog signals — think temperature sensor trip points or undervoltage lockout thresholds where microsecond response is unnecessary.
The 45 µs max propagation delay sets the upper frequency limit for the input signal: at a 10 kHz square wave, the output edge is delayed by less than half a period, so the comparator stays in phase for most slow-loop control applications. The 4 mV internal hysteresis prevents output chatter when the input crosses the threshold slowly, eliminating the need for external positive feedback resistors in many designs.
SC-70-5 footprint and supply flexibility
The surface-mount package is compatible with standard reflow profiles.
Active lifecycle and compliance documentation
It is ROHS3 compliant, and Analog Devices provides the standard compliance documentation (RoHS, REACH, material declaration) on request. The CMRR is 66.02 dB typical, and PSRR is 80 dB typical — the high PSRR means the threshold accuracy holds up even when the supply rail carries ripple from a switching regulator.