Title :
A ΣΔ A/D converter realized by using ST52X440 microcontroller
Author :
Andò, B. ; Cocuccio, A. ; Graziani, S. ; Presti, M. Lo
Author_Institution :
Dipt. di Ingegneria Elettrica, Elettronica e dei Sistemi, Universita degli Studi di Catania, Italy
Abstract :
In the paper the realization of a first order sigma-delta A/D (analog-to-digital) converter and of the software tools developed for its characterization are introduced. The A/D converter is based on the use of ST52X440 microcontroller produced by ST Microelectronics by exploiting both the availability of a comparator for the realization of the high frequency loop and its computing capability for the realization of the digital filters. A description of the hardware solutions and of the filtering blocks for the implementation of the sigma-delta converter is given. A software tool implemented in LabVIEW® by National Instruments™ that realizes a custom interface for the device characterization is also described. Preliminary results suggest satisfactory performance of the device and allow to foresee interesting application in low cost sensing devices.
Keywords :
analogue-digital conversion; digital filters; microcontrollers; software tools; virtual instrumentation; LabVIEW®; National Instruments™; ST Microelectronics; ST52X440 microcontroller; analog-to-digital converter; comparator; computing capability; device characterization; digital filters; filtering blocks; frequency loop; low cost sensing devices; sigma-delta A/D converter; software tools; Analog-digital conversion; Availability; Delta-sigma modulation; Digital filters; Digital-to-frequency converters; Frequency conversion; Frequency locked loops; Microcontrollers; Microelectronics; Software tools;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2004. IMTC 04. Proceedings of the 21st IEEE
Print_ISBN :
0-7803-8248-X
DOI :
10.1109/IMTC.2004.1351109
