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Nanopower Analog ICs Enable Sub-1V, Micropower Current Sensing Techniques

February 15, 2012 // Martin Tomasz, Sageloop Designs // 0 comments

Nanopower Analog ICs Enable Sub-1V, Micropower Current Sensing Techniques Download White Paper 479Ko

Current-sense amplifiers can monitor battery or solar cell currents, and are useful to estimate power capacity and remaining life. However, if the battery or solar source is a single cell, it's difficult to find a low voltage solution that works below 1V and draws just microamps. A new class of nanopower analog ICs, namely Touchstone Semiconductor's TS1001 0.8V/0.6µA op amp, makes a sub-1V supply current sense amplifier possible. With its extremely low power, the circuit can simply remain "always on", providing a continuously monitored, averaged indication of current which can be read by a microcontroller without too much current drain.


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This month Ambiq Micro is giving away five of its 'Apollo EVB' evaluation boards, worth 9 each for EETimes Europe’s readers to assess the capabilities of their cutting-edge Apollo sub-threshold microcontroller.

The new suite of Apollo MCUs is based on the 32-bit ARM Cortex-M4 floating point microcontroller and redefines 'low power' with energy consumption that is typically five to ten times lower than that of MCUs of comparable performance (thanks to Ambiq’s patented Subthreshold Power Optimized Technology platform).


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