Quad JFET op-amp for precision signal chains
The AD8513ARZ-REEL7 is a quad JFET-input operational amplifier from Analog Devices, packing four independent amplifiers in a 14-SOIC package. With an 8 MHz gain-bandwidth product and a 20 V/µs slew rate, it is sized for fast-settling analog front-ends — think multichannel data acquisition, active filters, or precision integrators where the input bias current needs to stay below 25 pA. Each of the four channels draws 2.2 mA supply current, so the total quiescent draw for the package is 8.8 mA — a reasonable budget for a four-channel signal chain running from ±5 V to ±15 V rails (10 V to 30 V total span). The 100 µV maximum input offset voltage keeps DC errors low without trimming.
Temperature grade and package fit
Rated for -40°C to 125°C operation, the AD8513ARZ-REEL7 covers the industrial temperature band — suitable for outdoor instrumentation, engine-bay electronics, or thermal chambers where the ambient exceeds 85°C. The 14-SOIC footprint (3.90 mm body width) is a standard surface-mount package; the reel7 suffix indicates 7-inch reel tape-and-reel packaging, which is the typical format for pick-and-place assembly. The output can source or sink 70 mA per channel, enough to drive a moderate load directly — for example, a 100 Ω resistor or a small relay coil — without an external buffer. The JFET input stage keeps bias current at 25 pA typical, which is critical for high-impedance sensor interfaces where a bipolar input would introduce measurable offset.