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An architecture of SAR ADC called the delta-modulated SAR ADC (DMSAR ADC) is proposed and designed for medical device applications. In the proposed DMSAR ADC, only the voltage difference between two successive samples is resolved to reduce the conversion steps and decrease the power consumption per channel up to 66%. The experimental chip is implemented in 0.18μm CMOS technology. At the digital supply...
In this paper, a new current-mode front-end amplifier for biopotential signal recording system is proposed. A current-mode preamplifier incorporates with an active feedback loop to bypass any dc current generated by tissues is designed as the first stage. A programmable gain stage and a current-mode filter are designed to adjust both gain and the low-pass cutoff frequency, respectively. The current-mode...
The through silicon via (TSV) technology brings a key to 3D integration on wafer level packaging (WLP) by stacking chips to generate direct electrical interconnecting paths. Most of the related literatures employed the daisy chain test patterns to measure the electrical continuity and to evaluate the single via resistance. However, the single via resistance is actually the contact resistance between...
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