High-speed current feedback amp in a SOT-23-6
With a 2700 V/µs slew rate and 540 MHz -3 dB bandwidth, it targets video distribution, high-speed ADC drivers, and RF/IF signal conditioning where settling time and pulse fidelity matter. The current feedback topology gives it nearly constant bandwidth over gain range, unlike voltage-feedback amps — useful when you need to switch gains without losing phase margin.
The 2700 V/µs slew rate is the headline number: it means the output can swing 5 V in under 2 ns. For a 2 Vpp video signal at 540 MHz, the amplifier isn't slew-limited — the large-signal bandwidth stays usable. The 540 MHz small-signal bandwidth covers IF stages up to the lower UHF band. Keep in mind the -3 dB point drops with higher closed-loop gain; for gains above +2, budget for reduced bandwidth. The 9 mA quiescent supply current is modest for this speed class — a voltage-feedback amp with similar bandwidth would typically draw 15 mA to 20 mA. Input offset voltage is specified at 3 mV, and input bias current at 2 µA, typical for a current-feedback input stage with emitter followers.
The SOT-23-6 package (supplier device package SOT-23-6) is a six-lead small-outline transistor package — 2.9 mm × 1.6 mm body, 0.95 mm pitch. For new designs requiring RoHS compliance, check the LMH6732MF/NOPB variant (lead-free) or evaluate the THS4215 as a voltage-feedback alternative if the topology fits.