What the bandwidth and supply range mean for your current-sense node
The MAX4173TESA+T is a single-channel current sense amplifier with a 1.7 MHz -3 dB bandwidth, meaning it can accurately reproduce current waveforms up to that frequency — useful for monitoring switching regulator output currents or motor phase currents where the ripple frequency sits below 1.7 MHz. The 420 µA supply current is the quiescent draw from the rail — negligible in a battery-powered system but worth budgeting in a multi-channel panel where dozens of these amplifiers share a supply.
Package and rework considerations for the 8-SOIC
Pin 1 is marked by a dot on the package top, and the 1.27 mm pitch gives good visual access for inspection. Surface-mount only — no through-hole variant. The 8-SOIC body is low-profile enough that it won't shadow adjacent components during reflow.