3 MHz GBW at 420 µA — the power/speed trade-off that matters
The MAX4252EBL+T is a dual general-purpose op-amp from Maxim Integrated, packing two rail-to-rail output channels into an 8-UCSP (1.6x1.6 mm) package. Its 3 MHz gain-bandwidth product at 420 µA per channel puts it in the sweet spot for low-frequency signal conditioning where you need bandwidth without burning the battery budget. The 70 µV input offset and 0.1 pA bias current mean you don't lose DC accuracy to the front end, even with high-impedance sensors.
Slew rate and output drive — what the 0.3 V/µs number actually limits
At 0.3 V/µs, this part isn't chasing fast edges. A full 5 V swing takes about 17 µs, so it's fine for audio, sensor filtering, or control loops, but not for pulse-width modulation or high-speed comparator outputs. Each channel can source or sink 68 mA, enough to drive a headphone or a small relay coil directly, though the thermal limits of the tiny UCSP package will be the real ceiling at continuous high current.
Package realities for the rework bench
The 8-UCSP (1.6x1.6 mm) is a wafer-level chip-scale package — no leads, just solder bumps on the bottom. That means the board footprint is the die size plus a few tenths of a millimeter. Replacing one without a hot-air station and a microscope is not happening. Active lifecycle status means no end-of-life surprise for a current design.