Parametric profile for signal-chain design
The LM258QT: Each channel draws 700 µA supply current — the total 1.4 mA quiescent for both amplifiers is low enough for always-on sensor interfaces in automotive modules where the 12 V battery rail is always present. The 0.6 V/µs slew rate and 1.1 MHz gain-bandwidth product suit it for filtering and amplification in the audio band and below — think wheel-speed sensor signal conditioning or PWM-filtered analog outputs. Input offset voltage is 5 mV max, input bias current 20 nA — adequate for non-inverting gain stages with source impedances below 50 kΩ. Output can source or sink 40 mA, enough to drive the ADC input or a small logic gate. Supply span runs from 3 V to 30 V single supply, or ±1.5 V to ±15 V split — the wide range lets it operate directly off an unregulated 12 V automotive rail without a pre-regulator.
Package and temperature grade for automotive deployment
The 8-UFDFN with exposed pad (supplier device package 8-DFN 2x2) is a low-profile, 0.55 mm max height package suited for under-hood or cabin modules where board space is at a premium. The exposed pad requires a thermal land on the PCB for rated power dissipation. Operating temperature range is -40°C to 105°C, which covers the automotive Grade 1 ambient band (AEC-Q100 Grade 1 is -40°C to 125°C junction; the 105°C ambient limit here means the part is rated for under-hood or passenger-compartment use where the ambient stays below 105°C).