Texas Instruments LPV542 Dual Nanopower CMOS Operational Amplifiers are ultra-low-power operational amplifiers that provide 8kHz of bandwidth from 490nA of quiescent current. This makes them well suited for battery-powered applications. These applications include health and fitness wearables, building automation, and remote sensing nodes. Each amplifier has a CMOS input stage with pico-amp bias currents. This helps to reduce errors commonly introduced in megaohm feedback resistance topologies such as photodiode and charge sense applications. The input common-mode range also extends to the power supply rails and the output swings to within 3mV of the rails. This helps to maintain the widest dynamic range possible. EMI protection is designed into the LPV542 in order to reduce system sensitivity to unwanted RF signals from mobile phones, WiFi, radio transmitters, and tag readers.
