Name
Abstract | ||
|---|---|---|
In this brief, an energy-efficient capacitance-to-digital converter (CDC) is presented. The proposed CDC uses digitally controlled coarse-fine multi-slope integration to digitize a wide range of capacitance in short conversion time. Both integration current and frequency are scaled, which leads to significant improvement in the energy efficiency of both analog and digital circuitry. Mathematical analysis for circuit nonidealities, noise, and improvement in energy efficiency is provided. A prototype fabricated in a 0.35-μm CMOS process occupies 0.09 mm2 and consumes a total of 153 μA from 3.3 V supply while achieving 13-bit resolution. The operation of the prototype is experimentally verified using MEMS capacitive pressure sensor. Compared to recently published work, the prototype achieves an excellent energy efficiency of 7.9 pJ/Step. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1109/TCSII.2014.2327312 | Circuits and Systems II: Express Briefs, IEEE Transactions |
Keywords | Field | DocType |
CMOS digital integrated circuits,analogue-digital conversion,integrated circuit noise,mathematical analysis,CDC,CMOS process,MEMS capacitive pressure sensor,analog-digital circuitry,circuit noise,circuit nonideality,current 153 muA,digitally controlled coarse-fine multislope integration,energy-efficient multi-slope capacitance-to-digital converter,frequency scaling,integration current scaling,mathematical analysis,short conversion time,size 0.35 mum,voltage 3.3 V,word length 13 bit,Capacitance-to-digital conversion (CDC),capacitive sensor interface circuit,energy efficiency,multi-slope | Capacitive pressure sensor,Capacitance,Microelectromechanical systems,Digital circuitry,Efficient energy use,Cmos process,To digital converter,Electronic engineering,Mixed-signal integrated circuit,Electrical engineering,Mathematics | Journal |
Volume | Issue | ISSN |
61 | 8 | 1549-7747 |
Citations | PageRank | References |
6 | 0.88 | 7 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Hesham Omran | 1 | 28 | 6.37 |
| Muhammad Arsalan | 2 | 46 | 7.21 |
| Khaled N. Salama | 3 | 345 | 46.11 |