Title :
S2I first-order incremental A/D converter
Author :
Yúfera, A. ; Rueda, A.
Author_Institution :
Inst. de Microelectron., Univ. de Sevilla, Spain
fDate :
4/1/1998 12:00:00 AM
Abstract :
An incremental analogue-to-digital converter (ADC), designed as part of the signal conditioning circuitry of a pressure sensor interface, is presented. For technological compatibility, the switched-current (SI) technique has been used, which does not need a double polysilicon CMOS process. To reduce the influence of the nonidealities of this technique. A conversion algorithm with digital correction has been chosen and circuit enhancements have been sought. A first 1 μm CMOS prototype has been tested in the laboratory. And a resolution up to 9 bits has been obtained for a 1 MHz clock
Keywords :
CMOS integrated circuits; analogue-digital conversion; pressure sensors; signal processing equipment; switched current circuits; 1 MHz; 1 micron; 9 bit; CMOS prototype; S2I circuits; conversion algorithm; digital correction; first-order incremental A/D converter; nonidealities; pressure sensor interface; resolution; signal conditioning circuitry;
Journal_Title :
Circuits, Devices and Systems, IEE Proceedings -
DOI :
10.1049/ip-cds:19981730
