Pligouroudis, M;
Papadimitriou, KI;
Evans, D;
Prodromakis, T;
(2017)
A dual switched-capacitor integrator architecture for versatile, real-time amperometric biosensing.
In:
(Proceedings) 2017 IEEE International Symposium on Circuits and Systems (ISCAS).
IEEE
Preview |
Text
Dual_Switched_Capacitor_Integrator_Architecture.pdf - Accepted Version Download (1MB) | Preview |
Abstract
In this paper, a versatile, re-programmable, current-input bioinstrumentation board is presented for electrochemical amperometric measurements. The proposed instrument has been fabricated on a six layer printed circuit board (PCB) and exploits dual switched-capacitor (SC) integration and sample-and-hold (SH) techniques. It comprises off-the-shelf switch and amplifier ICs and a commercially available FPGA-based DSP unit for digital signal control and synchronisation. It features eight amperometric channels, has a dynamic current range of 100dB, can be powered-up by a USB port or a 5V battery and is portable, with dimensions of 110×110 mm2. An onboard digital-to-analog converter (DAC) combined with standard three-electrode potentiostats can provide precise, programmable biasing voltages to eight amperometric biosensors simultaneously. Validation of the robustness and accuracy of the proposed system is demonstrated by proof-of-concept amperometric measurements using a high-precision Keithley 6221 current source and NaCI solution on a PCB-based sensor.
| Type: | Proceedings paper |
|---|---|
| Title: | A dual switched-capacitor integrator architecture for versatile, real-time amperometric biosensing |
| Event: | 2017 IEEE International Symposium on Circuits and Systems (ISCAS) |
| ISBN-13: | 9781467368520 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/ISCAS.2017.8050728 |
| Publisher version: | https://doi.org/10.1109/ISCAS.2017.8050728 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10059819 |
Loading...
Loading...Loading...Loading...Archive Staff Only
 |
View Item |
