The MAX4112EUA-T is a single-channel current-feedback op-amp from Maxim Integrated, built for applications where signal edges need to stay clean at high frequencies. Its 1200 V/µs slew rate and 400 MHz -3 dB bandwidth place it squarely in the video distribution, pulse amplification, and high-speed ADC driver space — think test equipment front-ends, broadcast video routers, or fast-settling DAC buffers. The current-feedback topology means the gain-bandwidth product isn't fixed; you set the bandwidth with the feedback resistor value, not the closed-loop gain. That gives you flat gain up to the MHz range without the gain-bandwidth trade-off a voltage-feedback amp forces.
Supply rails and power budget
The supply span runs from 9 V to 11 V — a tight window compared to general-purpose op-amps, so it needs a regulated rail. Quiescent current is 5 mA per amplifier, and the output can deliver 80 mA per channel. That 5 mA supply current is the no-load draw; at full output swing into a 50 Ω load the current climbs, but the 8-µMAX package's thermal path handles it as long as the board has a decent ground plane.
Housed in an 8-µMAX package (the 8-MSOP variant with 0.118-inch body width, 3.00 mm), it's a surface-mount part with a fine-pitch leadframe. The µMAX package has a small thermal pad on the underside — not always present on every MSOP footprint — so check the land pattern in the datasheet.
The storage temperature exceeds the operating range, but the 85°C upper limit means the part isn't intended for under-hood or high-ambient enclosures without active cooling.
The RoHS compliance is marked as non-compliant, so verify your assembly's exemption requirements if you're shipping into RoHS-restricted regions.