The latest low power operational amplifier from National Semiconductor represents it lowest offering at 552nW.
With operation down to 1.6V, the PowerWise LPV521 features a supply voltage range from 1.6V to 5.5V with a maximum supply current of 0.4µA.
Its common-mode voltage range accepts input signals 100mV beyond each rail, a feature designed for temperature and pressure sensor applications.
The maximum 1mV input offset voltage and 3.5µV per degree C of input offset voltage drift should ensure stable measurement for both high-side and low-side current sensing.
Uniquely, the op amp equipped with electromagnetic interference (EMI) suppression filters to reduce unwanted radio frequency interference from external sources.
The power-to-performance ratio is 65µA per MHz.