Quad, 14-MHz, MUX-friendly, zero-drift, rail-to-rail-output, precision operational amplifier

The OPA189, OPA2189, and OPA4189 (OPAx189)

high-precision operational amplifiers are ultra-low noise,

fast-settling, zero-drift devices that provide rail-to-rail

output operation and feature a unique MUX-friendly

architecture and controlled start-up system. These features

and excellent ac performance, combined with only 0.4 µV of

offset voltage and 0.005µV/°C of drift over temperature for

the single-channel version, make the OPAx189 a great choice

for precision instrumentation, signal measurement, and

active filtering applications. Moreover, the MUX-friendly

input architecture prevents inrush current when applying

large input differential voltages, which improves settling

performance in multichannel systems, all while providing

robust ESD protection during shipment, handling, and

assembly.

All versions are specified from –40°C to +125°C.