Total supply current is 1.4 mA across all four channels, or roughly 350 µA per amplifier. This makes the TL084QD a practical choice for multi-channel signal conditioning in battery-powered or thermally constrained automotive modules, where every milliamp matters. The input bias current is 30 pA typical, a direct benefit of the JFET input stage. This allows the op-amp to interface directly with high-impedance sensors (e.g., piezoelectric, photodiode) without significant DC error from bias current.
This qualifies it for under-hood, engine bay, and chassis-domain electronics where the ambient temperature can exceed 105°C. The supply voltage span of 10 V to 30 V gives headroom for unregulated automotive rails (e.g., 12 V battery with load-dump transients), though the absolute maximum rating should be checked against the system's worst-case transient.
The 1.27 mm pin pitch is layout-friendly for two-layer automotive PCBs, and the SOIC footprint is widely supported across assembly houses.