Supply range and single-supply 3.3 V operation
With a minimum supply span of 2.4 V and a maximum of 6.5 V, the MAX4323ESA+ runs comfortably on a single 3.3 V rail. The rail-to-rail output lets you use nearly the full supply swing, which matters when the ADC reference is also 3.3 V and every millivolt of headroom counts. The 725 µA supply current per amplifier is moderate — not the lowest for battery gear, but fine for a multi-stage signal chain where you need a few of these on the board.
The 5 MHz gain-bandwidth product sets the usable closed-loop gain at a given frequency: a gain-of-10 stage is good to about 500 kHz, a unity-gain buffer to the full 5 MHz. The 2V/µs slew rate limits how fast the output can swing — for a 2 V peak-to-peak signal, the full-power bandwidth is roughly 160 kHz. If you are amplifying fast pulses or audio above a few tens of kilohertz, check that the slew rate does not introduce distortion. For slow sensor signals or DC-accurate buffers, neither spec is a constraint.
Package, temperature grade, and lifecycle
Maxim lists the product status as Active, so there is no near-term obsolescence risk for production BOMs. The part is ROHS3 compliant.