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An incremental delta-sigma modulator with a self-making capacitor having a high voltage operating ability for a 12-cell battery pack is proposed in this paper. The measured voltage range for each battery is from 0 to 5 V, and the maximum input voltage reaches to 60 V. The self-making capacitor adopting a metal over poly silicon with a relatively thin layer of oxide between the two plates is generated...
Presents a low offset current sensing circuit based on switched-capacitor, in which resistance sensing technique is used. Under the control of clock switch, the switched-capacitor integrator could feed the operational amplifier offset voltage back to major circuit as a negative feedback regulator periodically to reduce the influence from the offset to the output. It is shown in the HSPICE simulation...
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