Title
A 9-b 0.4-V charge-mode SAR ADC with 1.6-V input swing and a MOSCAP-only DAC.
Abstract
The linearity of the vast majority of the ADC topologies is limited by the linearity of the employed circuit elements, e.g. resistors and capacitors. This paper presents a 9-b charge-mode SAR ADC that uses only very nonlinear MOSCAPs as the DAC capacitance elements and still presents 67 dB of SFDR. The track-and-hold exploits the routing parasitics as the sampling capacitance, entirely obviating MOM capacitors in the design. The circuit employs local voltage boosting and a new boost-and-bootstrap switch in order to allow operation under 0.4 V of supply voltage. Still, the ADC topology achieves a differential input swing of 1.6 V-pp, which is four times the supply voltage. The 0.13-mu m CMOS prototype achieves an ENOB of 8.01 at 300 kSps while consuming 354 nW. The corresponding FoM is 4.57 fJ/conversion-step.
Year
Venue
Field
2015
Proceedings of the European Solid-State Circuits Conference
Computer science,Electronic engineering,Successive approximation ADC,Electrical engineering,Swing
DocType
ISSN
Citations 
Conference
1930-8833
1
PageRank 
References 
Authors
0.38
5
2
Name
Order
Citations
PageRank
Taimur Gibran Rabuske1286.53
Jorge R. Fernandes215434.16