National Semiconductor - Low power op amp

The LPV521 features a supply voltage range from 1.6V to 5.5V with a maximum supply current of 0.4 uA. Its wide-input common-mode voltage range accepts input signals 100 mV beyond each rail, enabling direct connection to several sensor types. In addition, the LPV521’s maximum 1 mV input offset voltage (Vos) and 3.5 uV per degree C of input offset voltage drift (TCVos) enable accurate and stable measurement for both high-side and low-side current sensing.

The LPV521 is the world’s only nanopower op amp equipped with electromagnetic interference (EMI) suppression filters to reduce unwanted radio frequency (RF) interference from external sources. This interference is emitted from a myriad of wireless devices such as cell phones, motion sensors and RFID readers.

The LPV521 is built on National’s proprietary VIP50 BiCMOS process technology, which enables optimal performance while maximizing power efficiency. The op amp offers an industry-leading power-to-performance ratio of 65 uA per MHz.

Available now, the LPV521 is supplied in a space-saving 5-pin SC-70 package and is priced at 65 cents each in 1,000-unit quantities. For more information, or to order samples and an evaluation board, visit www.national.com/pf/LP/LPV521.html.