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This paper reports a high-performance low-power and area-efficient single-ended SAR ADC for neural signal acquisition. The proposed 10-bit ADC features a novel symmetrical DAC switching technique that resolves the signal-dependent comparator offset voltage problem in conventional single-ended SAR ADCs, and improves the ADC's ENOB. Combined with an existing LSB single-sided switching method, the proposed...
This paper presents a non-binary passive charge sharing SAR ADC and an optimization method for non-binary successive approximation algorithm. The passive charge sharing ADC is designed. The optimization method suggests that the non-binary SAR ADC with lower standard deviation DAC capacitance values will show better static performance. The SAR ADCs with different standard deviation value of DAC capacitor...
This paper presents a novel charge-redistribution successive-approximation register (SAR) analog-to-digital converter (ADC). The proposed ADC is based on a novel capacitive DAC switching scheme which employs unit capacitors for voltage sampling and charge redistribution. Compared with published capacitive DAC which uses the same unit size capacitor, the proposed DAC needs only 33% of the total switches...
This paper presents a novel switching scheme for an ultra-low energy charge-redistribution digital-to-analog converter (DAC) to be used in successive-approximation register (SAR) analog-to-digital converter (ADC). The proposed scheme employs unit capacitors for voltage sampling and charge redistribution. Compared with previously published capacitive DAC which uses the same unit size of capacitor array,...
In this paper we have proposed a metamaterial based composite right-left handed transmission line new structure with microstrip gap capacitor and stub inductors shorted to the ground plane by via to achieved miniature filters with two transmission zeros and wide upper-stopband performance. The proposed designs take advantage of different aspects of metamaterial behaviour to achieve miniature and wide...
A novel one-dimensional (1-D) defected ground structure (DGS) for the microstrip line is proposed. Different from the square-shaped DGS (SSDGS), the improved DGS (IDGS), which hold four stubs to disturb the fields in the square defected pattern, improved the effective capacitance and inductance at high frequencies, and provide a very wide bandgap characteristic with only one or more unit lattices...
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