Differential amplifier for high-speed signal chains
Its 390 V/µs slew rate and 36 MHz -3 dB bandwidth let it handle fast transients and wideband signals without slewing into distortion — think high-speed data acquisition, ultrasound front-ends, or communications receivers where common-mode rejection matters. Supply current sits at 250 µA, so it does not punish a power budget the way a video-speed op-amp would.
A 390 V/µs slew rate means this part can swing its output by several volts in a few nanoseconds. For a 2 V peak-to-peak signal, the output settles in roughly 5 ns — fast enough to preserve the shape of a 36 MHz sine wave without slew-induced distortion. The 27 MHz gain-bandwidth product tells you the closed-loop gain you can get at a given frequency: at a gain of 10, expect a usable bandwidth around 2.7 MHz. That combination of speed and low 250 µA supply current is what makes the THS4531IDR a fit for battery-powered instrumentation where you cannot afford a 5 mA video amp.
Supply range and single-rail operation
The rail-to-rail differential output means the signal can swing nearly rail-to-rail — useful when your ADC reference is the same supply. Input common-mode range is not rail-to-rail (typical for a differential amp), but the 2.5 V minimum supply keeps the input stage happy with ground-referenced signals in most single-supply designs. Input offset voltage is 200 µV typical, input bias current 160 nA — both reasonable for a high-speed differential stage.