Precision zero-drift amplifier for DC-accurate signal chains
The Analog Devices ADA4528-1ACPZ-R7 is a single-channel zero-drift operational amplifier that delivers a 0.3 µV typical input offset voltage and a 4 MHz gain bandwidth product. It operates from a 2.2 V to 5.5 V supply span, draws 1.5 mA quiescent current, and drives rail-to-rail outputs. The part is packaged in an 8-lead LFCSP-WD (3x3 mm) with an exposed pad for thermal conduction. It is rated over the -40°C to 125°C temperature range, suiting it for precision instrumentation, sensor front-ends, and industrial control loops where DC drift must be minimized without external trimming.
0.3 µV offset — what it means for the BOM
The 0.3 µV input offset voltage is the defining spec. For a thermocouple or strain-gauge amplifier, that offset translates directly to a DC error at the output.
