With a supply span from 3 V to 28 V, the MAX4376FAUK directly monitors common 5 V, 12 V, and 24 V industrial power buses without an external regulator. The 1 mA supply current (typical) keeps the overhead low for always-on current monitoring.
Bandwidth and slew rate — what they mean for transient capture
The 2 MHz bandwidth and 10 V/µs slew rate let this part track current changes faster than a general-purpose op-amp used as a difference amplifier. For a shunt voltage step of 100 mV, the output settles in roughly a microsecond. This matters for overcurrent detection in switch-mode power supplies or for monitoring inrush current where the event lasts only a few microseconds. The 120 µA input bias current is higher than a typical op-amp, but acceptable because the shunt resistor is usually in the milliohm range, keeping the voltage drop well below the bias-induced error.
Package and sourcing note
The MAX4376FAUK is supplied in a SOT-23-5 package (SC-74A, SOT-753 case) and is listed with a Bulk shipping option. Note that this variant is marked as RoHS non-compliant, which may affect its use in markets with RoHS restrictions — verify your local compliance requirements before specifying.