4100V/µs Slew Rate – What It Means for the Signal Chain
The LM7171BIM-NS is a single voltage-feedback amplifier from Texas Instruments, packing a 4100 V/µs slew rate and 220 MHz -3 dB bandwidth. That slew rate means the output can swing 20 V peak-to-peak in under 5 ns — critical for driving capacitive loads like ADC inputs or coaxial cables in high-speed data acquisition without slew-induced distortion.
Parametric Fit for High-Speed Analog Front-Ends
Gain-bandwidth product sits at 200 MHz, so at a closed-loop gain of 10 the usable bandwidth is about 20 MHz before the open-loop roll-off cuts in. Input bias current is 2.7 µA and input offset voltage is 200 µV — both moderate figures that matter if the front-end drives a high-impedance sensor directly; a buffer stage may be needed for microvolt-level signals. Supply span runs from 5.5 V to 36 V single or dual supply, and each channel draws 6.5 mA quiescent. Output can source or sink 118 mA continuous — enough to drive a 50-ohm back-terminated line to ±5 V without external buffer. Operating temperature range is -40°C to 85°C, covering industrial-grade environments. The 8-SOIC package (3.90 mm body width) is a standard footprint for dual-supply op-amps — rework-friendly under hot air if the board has adequate thermal relief on the pads.