High-speed differential driver for ADC front-ends and video lines
The AD8131ARMZ-REEL7 is a single-channel differential amplifier from Analog Devices, designed to drive high-speed ADCs or buffer differential video signals over twisted-pair cables. Its 400 MHz -3 dB bandwidth and 2000 V/µs slew rate make it a fit for communications infrastructure, medical imaging, and test equipment where signal integrity at high frequencies matters. The part operates from a 2.8 V to 11 V supply span and delivers 60 mA per channel output current, enough to drive a 50 Ω load or a typical SAR ADC input. The 8-MSOP package keeps board area tight, but the 11.5 mA supply current means thermal dissipation is manageable in forced-air or moderate free-convection environments.
The 2000 V/µs slew rate is the standout spec: it supports full-power bandwidth into the tens of megahertz without slew-induced distortion. For a 10 V peak-to-peak output swing, the part can track a 31.8 MHz sine wave before the slew rate limits the large-signal response. The 400 MHz -3 dB bandwidth is the small-signal figure — useful for gain-flatness up to 100 MHz or so. Together, they mean this op-amp can drive a 12-bit ADC at 50 MSPS or buffer component video (480i/576i) without visible degradation. Compare with the AD8132WARMZ-R7 (1200 V/µs, 360 MHz) or the AD8134ACPZ-R2 (1600 V/µs, 450 MHz, triple channel) — the AD8131 sits in the middle of the family for speed, but the single-channel 8-MSOP is the smallest footprint option.
Active lifecycle and compliance status
If you need a smaller quantity, Cut Tape (CT) is also listed.