LM324ADR

LM324ADR is the tape-and-reel SOIC-14 ordering code for the Texas Instruments LM324A — the A-grade selection of the industry-standard LM324 quad operational amplifier, four independent amplifiers in one 14-pin package on a 2500-piece reel. TI's current ordering information still lists this reel code as orderable (status rechecked against TI documentation at listing time); note the tube-packed sibling code in this grade has a different lifecycle position, so the ADR reel code must be quoted and checked on its own row, not inferred from other LM324A codes. The A grade is the selection point: it is the narrower-selected version of the LM324 with tighter input offset voltage and input bias current, while the family parametrics carry over — single supply from 3 V to 30 V (or dual supplies), 1.2 MHz typical gain bandwidth, 0.5 V/µs typical slew rate, common-mode input range including ground and 0 °C to +70 °C operation. The business benefit is four commodity amplifiers per package for control, monitoring and interface stages at the lowest cost per channel. Selection advice: the LM324 column is not the LM324B column — the B generation tightens offset further and adds EMI filtering, so re-check rather than silently substitute in either direction; this part is not rail-to-rail, so allow output headroom. Parameters verified against Texas Instruments documentation.