Patra, P and Yadav, K and Vamsi, N and Dutta, Asudeb
(2016)
A 343nW biomedical signal acquisition system powered by energy efficient (62.8%) power aware RF energy harvesting circuit.
In: IEEE International Symposium on Circuits and Systems (ISCAS), 22-25 May 2016.
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Abstract
This work proposes an energy efficient wearable CMOS biomedical signal acquisition and digitization scheme powered by RF energy harvesting circuit. The system consists of a ultra-low power analog front end (AFE) incorporating low noise instrumentation amplifier (IA)(CMRR=75dB), two programmable gain amplifiers (PGA), mixed signal automatic gain control (AGC) and a successive approximation register (SAR) analog to digital converter (ADC)(10-bit). The full system is powered by a power aware RF energy harvesting circuit for an input range of -26dBm to -8dBm. The AFE along with ADC consumes 343nA with 1V supply voltage in UMC 0.18μm CMOS technology.
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