Title :
SC interface for capacitive measurements with extended linear range
Author :
Iordanov, V.P. ; Meijer, Gerard C M ; Nihtianov, Stoyan N.
Author_Institution :
Electron. Instrum. Lab., Delft Univ. of Technol., Netherlands
Abstract :
A novel front-end circuit for capacitive sensors with switched-capacitor (SC) circuits is presented. In this circuit charge is transferred to an input integrator circuit in a controlled way to prevent overload of the input amplifier. Application of this technique extends the linear range for large input signals.
Keywords :
capacitive sensors; integrating circuits; switched capacitor networks; voltage-controlled oscillators; SC interface; capacitive measurements; capacitive sensors; extended linear range; front-end circuit; input integrator circuit; switched-capacitor circuits; Capacitors; Charge measurement; Charge transfer; Current measurement; Diodes; Integrated circuit measurements; Intelligent sensors; Switches; Voltage; Voltage-controlled oscillators;
Conference_Titel :
Sensors, 2002. Proceedings of IEEE
Print_ISBN :
0-7803-7454-1
DOI :
10.1109/ICSENS.2002.1037333
