A Fully Differential Variable Gain Amplifier for Portable Impedance Sensing Applications
DOI:
https://doi.org/10.26754/jji-i3a.003605Resumen
This paper presents a Variable Gain Amplifier (VGA) designed in a 0.18 μm CMOS process to operate in an impedance sensing interface. Based on a transconductance-transimpedance (TC-TI) approach with intermediate analog-controlled current steering, it exhibits a gain ranging from 5 dB to 38 dB with a constant bandwidth around 318 kHz, a power consumption of 15.5 μW at a 1.8 V supply and an active area of 0.021 mm2.
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Publicado
2019-05-20
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Artículos (Tecnologías Industriales)