The AD8066ARMZ is a dual-channel FastFET™ voltage-feedback amplifier from Analog Devices. Its headline rating is a 180 V/µs slew rate paired with a 120 MHz -3 dB bandwidth, which together handle fast pulse edges and high-frequency content without excessive distortion — think ADC driver, video line driver, or high-speed filter stages where settling time matters. The rail-to-rail output stage lets it swing close to the supply rails, useful in single-supply systems where every millivolt of headroom counts.
Dual channel vs single: board-area decision
The AD8066ARMZ packs two amplifiers in the same 8-MSOP footprint that the single-channel AD8065 occupies in an SOT-23 or SOIC-8. If your BOM needs two high-speed op-amps per channel, the AD8066 saves board area and per-channel cost. The single-channel AD8065WARTZ-R7 carries an automotive grade rating (-40°C to 105°C) that the AD8066ARMZ does not — so for under-hood or high-temp environments, the single-channel variant is the correct choice despite the density trade-off.
The part is ROHS3 compliant.
Supply range and input bias — design-in notes
Supply span runs from 5 V to 24 V, so it works on common single rails (5 V, 12 V, 15 V, 24 V) without a negative supply. Input bias current is 3 pA typical — the FET input stage keeps the DC error low even when driving high-impedance sources like photodiodes or high-value feedback resistors. Output current per channel is 30 mA, enough to drive a 50 Ω load to ±1.5 V swing.