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This paper presents the design of a low gain-error pseudo rail-to-rail indirect current feedback instrumentation amplifier (In-Amp). In order to reduce the gain error introduced by the input common mode voltage variations, MOS transconductors regulated by specially designed folded-cascoded amplifier are used. Simulated gain error is only about 0.2% with input common mode voltage ranging from half...
The substrate noise becomes more serious with the increasing frequency and decreasing process geometries. In this paper, a mathematics model of the substrate noise will be proposed. The current methods for solving the substrate noise will be analyzed using the model, and a new method is proposed based on the inverse relationship between the varying voltage of the power supply line and the one of ground...
Illustrated by the case of a lithium-ion battery protection IC, the paper focuses on the design of internal immunity to RFI. With analysis of the chippsilas three major elements of electromagnetic compatibility (EMC), the qualitative and quasi-quantitative analysis results of RFI influence to the chip are given out. By using a simple filter circuit and available material physical construction which...
The EMI/EMC problems appear in mixed-signal ICs with the increasing frequency and decreasing process geometries. In this paper, the amplitude modulation (AM) is taken into account the LC-VCO based on the TSMC 0.25 um mixed-signal process, and a cascade amplifier circuit, which is not complex, is proposed to optimize the LC-VCO through analyzing the noise coupling transition function of the LC-VCO...
A dual-output voltage bandgap reference has been designed for high-accuracy pipelined ADC with CSMC0.6 process technology in this work. Based on the temperature and noise analyzing of voltage reference, the traditional circuit has been improved. The structure with two PN junctions in series,non-operational amplifier structure and PTAT (proportional to absolute temperature) current supplied by ldquoself-biasrdquo...
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