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Precise Nanopower Opamp for “Always ON” Sensing Applications

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Texas Instruments (TI) has launched its latest nanopower operational amplifier (op amp) which not only maximizes battery life but also offers high precision in applications such as wireless sensing nodes, home and factory automation equipment, and portable electronics.

The LPV821 op amp enables engineers to design lighter, smaller and more portable applications with lower-capacity batteries and longer system lifetimes.

“Consuming only nanoamps of supply current, while providing the high-precision benefits of optimized offset, drift and 1/f noise (flicker noise), the LPV821 is extremely beneficial for applications where both precision and low power are essential system needs, including industrial gas detectors, field transmitters and battery packs”, claims TI.

The device has a supply current of 650 nA to extend battery lifetimes. An input bias current of 7 pA and low flicker noise at 3.9 µVp-p enables operation with high-impedance sensors, delivering more accurate measurements in precision systems.

Nanopower consumption of the opamp enables always-on applications such as continuous and blood glucose monitoring, and other electrochemical cell applications. Additionally, the low supply current decreases the external circuitry required to turn the amplifier on and off.

Furthermore, self-calibration technology helps engineers save system development cost and speed time to market.

Click here for Press release.

For more information, click here.

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