JFET input stage — why the 65 pA bias current matters
The TL071ACDG4 is a single-channel JFET-input operational amplifier from Texas Instruments. Its JFET front end delivers a typical input bias current of 65 pA, which keeps voltage offset drift low when the source impedance is high — think photodiode transimpedance or piezoelectric sensor conditioning.
Supply rails and temperature — the design envelope
For a motor drive or outdoor telecom bay, you would need the industrial-grade sibling (TL071ACD).
TI has announced end-of-life for this specific date-code/package variant. That means the window for placing final orders is open now — once the last-buy period closes, the part will only be available through surplus or independent channels.