High resolution analog-to-digital converter for low-frequency high-voltage signals

Author

Aaltonen, Lasse ; Halonen, Kari

Author_Institution

SMARAD-2/Electron. Circuit Design Lab., Helsinki Univ. of Technol., Helsinki

fYear

2008

fDate

Aug. 31 2008-Sept. 3 2008

Firstpage

1245

Lastpage

1248

Abstract

In this paper, a design and measurements of a high resolution analog-to-digital converter (ADC) will be presented. The implemented SigmaDelta-ADC is combined with a low-noise buffer which enables the use of a single-ended input signal with maximum value of twice the nominal supply. The designed system was measured to achieve input referred noise voltage density of 220 nV/radic(Hz) and a bandwidth up to 1 kHz. The presented system will be applied for digitizing the output of a continuous-time accelerometer.

Keywords

analogue-digital conversion; delta-sigma modulation; SigmaDelta-ADC; continuous- time accelerometer; high resolution analog-to-digital converter; input referred noise; low-frequency high-voltage signals; low-noise buffer; single-ended input signal; Accelerometers; Analog-digital conversion; Bandwidth; Clocks; Low-frequency noise; MOS capacitors; Mechanical sensors; Signal design; Signal resolution; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 2008. ICECS 2008. 15th IEEE International Conference on

Conference_Location

St. Julien´s

Print_ISBN

978-1-4244-2181-7

Electronic_ISBN

978-1-4244-2182-4

Type

conf

DOI

10.1109/ICECS.2008.4675085

Filename

4675085