720 MHz GBW in a TSOT-23-6 — what that buys you
The LTC6252CS6#TRMPBF is a single-supply, single-channel general-purpose op-amp from Analog Devices that packs a 720 MHz gain-bandwidth product and a 280V/µs slew rate into a TSOT-23-6 package. The rail-to-rail output swing lets it drive the full input range of a successive-approximation ADC without a level shifter, though the input common-mode range is not rail-to-rail — something to check when running single-supply near the positive rail.
Quiescent supply current is 4.25 mA — not a micropower part, but reasonable for the speed class. That rules out automotive under-hood, outdoor telecom enclosures, or industrial motor-drive compartments. If the board lives in a conditioned lab, office equipment, or consumer electronics bay, the grade is fine.
Input offset and bias — bench-level considerations
The bias current is on the higher side for a CMOS-input op-amp — this is a bipolar input stage — so source impedance matters. With a 10 kΩ source, the 1.4 µA bias drops 14 mV across the resistor, which can swamp the offset. Keep source resistance low or balance the impedance at both inputs. The 100 µV offset is tight enough for most precision gain stages, but the bias current is the spec to design around.
For new designs or existing BOM lines, there is no urgency to qualify a drop-in replacement.