By Topic

A second-order sigma-delta ADC using MOS capacitors for smart sensor applications [smart temperature sensor]

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Pertijs, M.A.P. ; DIMES, Delft Univ. of Technol., Netherlands ; Bakker, A. ; Huijsing, J.H.

This paper presents a second-order sigma-delta ADC designed for use in a smart temperature sensor. It is operated in a 'one-shot' mode, i.e. the converter is powered up, produces a single conversion result, and powers down again. This paper discusses the implications of this mode of operation for the design of the modulator and the decimation filter. A sinc2 decimation filter is used, which is shown to provide a higher resolution then a more complex sinc3 with the same conversion time. Through continuous-time integration of the input and reference voltages, the use of a linear sampling capacitor at the input is avoided. The modulator was implemented in a 0.5 μm digital CMOS process using MOS capacitors. An effective resolution of 15.5 bits was measured with a conversion time of 25 ms.

Published in:

Sensors, 2004. Proceedings of IEEE

Date of Conference:

24-27 Oct. 2004