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Electret-type earphone exhibits a great potential on in-ear hearing-aid applications for the low driving power requirement. However, to enable a static force for thin film's vibration, the input voltage swing has to be large. Instead of using HV technology, in this work we develop a 12-V bridge-type audio driving system by a standard 1.8-V 0.18-μπι CMOS. The system integrates two switched-capacitor...
This paper reports on the implementation of a CMOS comparator for medical imaging applications. Design philosophy along with the conceptual imaging architecture, system requirement, associated considerations, and circuit details is discussed. Experimental results from the fabricated chip are given as proof of concept.
A novel method to detect human sphygmus by using pulse Repetition Period Modulation (PRPM) under unlicensed Ultra-Wide-Band (UWB) below 1 GHz is proposed in this work. The RF front-end receiver was implemented by TSMC CMOS 0.18 um technology that includes push - pull LNA, sampled MIXER, IF amplifier and common-mode feedback circuit. Total current consumes only 2.02 mA by using current reuse technique...
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