Zero-drift precision for low-frequency signal chains
The OPA180IDGKR is a single-channel zero-drift operational amplifier from Texas Instruments, built for applications where DC accuracy and long-term stability matter more than raw bandwidth. Its 15 µV maximum input offset voltage and 250 pA input bias current suit it for high-impedance sensor front-ends — think bridge transducers, thermocouple amplifiers, or photodiode transimpedance stages where the error budget is tight.
Speed and response — where the 2 MHz GBW fits
At a gain of 10, the usable bandwidth drops to roughly 200 kHz; the slew rate limits the large-signal response to about 0.8 V/µs, so a 10 V output step settles in around 12.5 µs.
Supply and power — single-rail simplicity
This covers common industrial rails — 5 V, 12 V, 24 V — without needing a separate negative rail for the input common-mode range. Quiescent current is 450 µA per amplifier, making it suitable for loop-powered transmitters or battery-backed instrumentation where every milliamp counts.