The OPA2677U is a dual current-feedback amplifier (CFA) that delivers a 2000 V/µs slew rate — that is the edge rate you need when driving a 75-ohm video line or a high-speed ADC input where the full-scale step must settle within the sampling window. A CFA architecture means the slew rate is not limited by the gain-bandwidth product the way a voltage-feedback amp is; the 2 GHz gain-bandwidth product and 250 MHz -3 dB bandwidth together tell you this part stays fast across a wide gain range. If the scorch mark on a dead board points to a blown output stage, this is the part that likely took the hit from a sustained short or an overvoltage event on the line.
Supply rails and temp range — where it fits
The 18 mA quiescent current per dual channel is the standing draw before any load current — budget this into the power supply for the signal chain, especially in multi-channel arrays where four or eight amps add up. The 10 µA input bias current and 800 µV input offset voltage are typical for a high-speed CFA; they matter more in DC-coupled paths than in AC-coupled video or RF chains.
It reworks cleanly with hot air at 300°C for about 30 seconds per side, assuming the board has been baked per J-STD-033 if the parts were exposed to humidity. The tube packaging means the leads are protected from mechanical damage during shipping, but the tube itself is not moisture-barrier — store in a dry cabinet if the reel or cut tape is not available.
Lifecycle and compliance — no last-time-buy scramble
RoHS3 compliant — no lead, no restricted phthalates — which means it ships into EU, UK, and California-regulated production lines without exemption paperwork.