Quad op-amp, 700 kHz GBW, 2.7–30 V supply
The OP747ARZ is a quad general-purpose operational amplifier from Analog Devices in a 14-SOIC surface-mount package. It operates from a single supply spanning 2.7 V to 30 V, making it suitable for 3.3 V logic rails or single-cell Li-ion battery applications without a separate negative rail. With a gain-bandwidth product of 700 kHz and a slew rate of 0.2 V/µs, this amplifier is designed for moderate-speed signal conditioning — think sensor buffering, active filters below 100 kHz, or general-purpose analog processing where speed is not the priority.
Rail-to-rail output and 30 µV offset
The rail-to-rail output stage swings within millivolts of both supply rails, maximizing dynamic range at low supply voltages. Input offset voltage is 30 µV typical, giving decent DC precision for a general-purpose part — adequate for most non-instrumentation tasks. Each of the four channels can source or sink 30 mA, enough to drive a modest load or feed into an ADC input. Supply current is 320 µA per device (all four channels), so the total quiescent draw stays under 1 mA — a good fit for battery-powered or multi-channel boards where power budget is tight. Input bias current is 5 nA, which is fine for signal sources with impedance up to a few hundred kOhm. For higher-impedance sensors (piezo, photodiode) the bias current will introduce a DC error that may need trimming or a FET-input alternative.
Industrial temperature, active lifecycle
Rated for -40°C to +85°C operating temperature, the OP747ARZ covers the industrial temperature grade — suitable for factory-floor control, outdoor telecom cabinets, and HVAC systems, but not automotive under-hood environments. RoHS3 compliance is confirmed, so it ships without lead or other restricted substances under the current EU directive.
Sourcing and fit for the BOM
The OP747ARZ is an active, in-production part from Analog Devices. The 14-SOIC package (0.154" body width, 3.90 mm) is a standard footprint shared with many quad op-amps. The tube packaging means it ships in anti-static tubes, not tape-and-reel — check your pick-and-place feeder compatibility if ordering for automated assembly.