The TL072IPG4 is a dual J-FET input operational amplifier from Texas Instruments in the TL072 family. Each of the two amplifiers draws 1.4 mA supply current, so the whole package consumes 2.8 mA quiescent — low enough for multi-channel boards without a thermal headache.
That covers audio-band signals cleanly and leaves headroom for fast-settling analog multiplexers or sample-and-hold stages.
That covers most bench, lab, and factory-floor environments without needing a military-grade part. Input bias current is 65 pA typical — the J-FET front end keeps the DC error low even with high-source-impedance sensors or feedback networks.
Package and mounting — through-hole still has a place
Housed in an 8-pin PDIP (0.300-inch body), the TL072IPG4 is a through-hole part. That means hand-prototyping, breadboarding, and socketed test fixtures are straightforward.
