Title :
A readout circuit for capacitive biosensors with integrated SAR A/D conversion
Author :
van Vroonhoven, C.P.L. ; Rocha, D. ; Vellekoop, M.J. ; Nöhammer, C.
Author_Institution :
Inst. of Sensor & Actuator Syst., Vienna Univ. of Technol.
Abstract :
This paper presents a circuit for monitoring biochemical reactions on an array of capacitive biosensors. The integrated SAR A/D conversion provides a robust solution that is configurable to meet a range of requirements. In the example given, the circuit operating at 100MHz is able to read out an array of 1000 capacitors with a value of 1pF at 12.5 kHz with 6 bit accuracy
Keywords :
analogue-digital conversion; biochemistry; biosensors; capacitive sensors; readout electronics; system-on-chip; 1 pF; 100 MHz; biochemical reaction; capacitive biosensors; integrated SAR A/D conversion; readout circuit; successive approximation register; Biosensors; Capacitive sensors; Capacitors; Circuits; DNA; Detectors; Electrodes; Monitoring; Sensor arrays; Sensor systems;
Conference_Titel :
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Conference_Location :
Island of Kos
Print_ISBN :
0-7803-9389-9
DOI :
10.1109/ISCAS.2006.1692861
