What this differential amp is and where it fits
The Maxim Integrated MAX4198ESA+ is a single-channel differential amplifier from the Beyond-the-Rails™ series, built for applications that need to extract a small difference signal from a common-mode background — bridge sensors, current-shunt monitors, or balanced-line receivers. It runs on a 2.7 V to 7.5 V supply span and draws only 45 µA quiescent current, which puts it in the micropower class. The rail-to-rail output stage lets it swing close to the supply rails without headroom loss, and the 30 µV input offset means you can resolve millivolt-level signals without external trimming.
Package and temperature grade
Housed in an 8-SOIC surface-mount package (3.90 mm body width), the MAX4198ESA+ is a standard footprint that fits most pick-and-place lines and matches the land pattern for generic SOIC-8 op-amps. The -40°C to 85°C operating range covers industrial environments — motor drives, outdoor telecom cabinets, factory-floor sensor interfaces. No AEC-Q100 rating here, so it is not qualified for automotive under-hood duty, but it is fine for commercial and industrial enclosures.
Sourcing and lifecycle
The MAX4198ESA+ is listed as Active on Maxim's lifecycle, with ROHS3 compliance.