A 181NW 970µG✓HZ Accelerometer Analog Front-End Employing Feedforward Noise Reduction Technique

Abstract

This paper presents 181nW accelerometer analog front-end (AAFE) with 970μg/√Hz noise. To achieve such ultra-low-power operation, the proposed AAFE utilizes a novel low-noise circuitry scheme that reduces power consumption in its amplifier, and it also includes an FSM to enable duty-cycling operation. The implemented AAFE in a 0.18μm CMOS process achieves an FoM of 4.4pJ.