J-FET quad op-amp with automotive pedigree
The Texas Instruments TL084BIN is a J-FET input quad operational amplifier — four independent amplifiers in a single 14-pin DIP package. It delivers a 16V/µs slew rate and 4 MHz gain-bandwidth product, with a supply current of 1.4 mA per channel.
Parametric fit for signal-conditioning loops
With a 20 pA input bias current and 1 mV input offset voltage, the TL084BIN suits high-impedance sensor interfaces — photodiode amplifiers, piezoelectric transducers, or precision integrators — where the J-FET input stage keeps loading errors low. The 40 mA per-channel output drive is enough to swing into typical ADC input stages or drive a twisted-pair line through a coupling capacitor. Supply range spans 6 V to 36 V, so it can run off a single 12 V automotive rail or split ±15 V supplies common in industrial analog front-ends. The 14-DIP (0.300-inch) through-hole package is a legacy footprint — still widely socketed in test jigs, burn-in boards, and retrofit designs where a DIP is preferred over SOIC for manual rework.
The base product number TL084 covers a wide family of J-FET quad op-amps in various packages and temperature grades. The 'BIN' suffix denotes the automotive-qualified DIP variant.