Fast, precise, and inexpensive AD-converters of a new time-division configuration for intelligent ohmic and capacitive sensors
K. Horn · 2003
Discusses those types of intelligent sensors that have a passive sensing device with ohmic or capacitive pick-up elements. It is shown that by means of specific compensation methods and the time-division principle combined with a novel strategy of digital control, it is possible to reduce the effects of transfer drifts of the electronic components of the sensor circuitry, simplify the circuitry, achieve at lower resolutions (e.g., 8 b) the conversion speed of conventional dual-slope A/D converters, and allow higher resolutions (up to 20 b) at a reduced bandwidth.>