CMOS precision operational amplifier provides robust ESD protection

The OPAx189 (OPA189 and OPA2189) series of high-precision operational amplifiers, from Texas Instruments, 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 startup system. These features and excellent AC performance, combined with only 0.4µV of offset voltage and 0.005µV/C of drift over temperature, makes the OPAx189 well-suited for precision instrumentation, signal measurement, and active filtering applications. Additionally, the MUX-friendly input architecture prevents inrush current when applying large input differential voltages which improves settling performance in multi-channel systems, all while providing robust ESD protection during shipment, handling, and assembly. All versions are specified from –40C to +125C.