Texas Instruments' LPV542 are ultra-low-power, dual operational amplifiers that provide 8 kHz of bandwidth from 490 nA of quiescent current. This makes them well suited for battery-powered applications such as health and fitness wearables, building automation, and remote sensing nodes.
Each amplifier has a CMOS input stage with pico-amp bias currents which reduces errors commonly introduced in megaohm feedback resistance topologies, such as photodiode and charge sense applications. In addition, the input common-mode range extends to the power supply rails and the output swings to within 3 mV of the rails, maintaining the widest dynamic range possible. Likewise, EMI protection is designed into the LPV542 in order to reduce system sensitivity to unwanted RF signals from mobile phones, Wi-Fi, radio transmitters, and tag readers.
The LPV542 operate on a supply voltage as low as 1.6 V, ensuring continuous superior performance in low battery situations. The devices are available in an 8-pad, low-profile, leadless 3 mm × 3 mm × 0.45 mm X1SON package and a standard 8-pin VSSOP.