High-speed voltage feedback amplifier in SOT-23-5
The THS4221DBVT: The rail-to-rail output stage allows the signal to swing within millivolts of each supply rail, preserving dynamic range in low-voltage single-supply chains. With a gain-bandwidth product of 120 MHz, the part maintains useful closed-loop gain into the tens of megahertz — suitable for video buffers, ADC drivers, or high-speed filter stages where settling time matters.
Parametric profile and DC accuracy
Quiescent current is 14 mA typical, a reasonable draw for the speed grade — the bias current powers the class-AB output stage that delivers the rail-to-rail swing. The single-channel configuration (Number of Circuits: 1) means one amplifier per package — use one THS4221DBVT per signal path and plan the PCB accordingly.
Package, footprint, and reel format
Available in Tape & Reel (TR) and Cut Tape (CT) options — the TR format is production-ready for pick-and-place; CT suits prototype or small-batch builds. Surface-mount mounting type — no through-hole variant; the part is designed for reflow assembly on standard FR-4.
Lifecycle, compliance, and sourcing reality
ROHS3 Compliant — no exemptions beyond the standard RoHS directive; suitable for EU-market equipment without additional documentation.