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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Pol, K.J. Hegt, H. van Roermund, A. Ouzounov, S. |
| Copyright Year | 2015 |
| Description | Author affiliation: Philips Res., Eindhoven, Netherlands (Ouzounov, S.) || Dept. of Electr. Eng., Eindhoven Univ. of Technol., Eindhoven, Netherlands (Pol, K.J.; Hegt, H.; van Roermund, A.) |
| Abstract | In this paper we present an ultra-low current measurement platform for amperometric bio-sensor readout. A current mode continuous-time sigma delta ADC is implemented and used as a direct interface to the bio-sensor, thereby omitting any intermediate frontend circuitry. This results in a low noise and low power readout suitable for compact integration. The ADC is reconfigurable and has a programmable dynamic range extending from 25nA to 250μA, along with a scalable clock allowing different conversion times. The wide dynamic range supports a variety of applications ranging from solid-state nanopores (pA), carbon nanotubes (nA) and certain protein based electrochemical bio-sensors (μA). Measurements show an integrated noise current of 314fA in a 100 Hz bandwidth, resulting in a resolution of 19bit. The chip dissipates 1.7mW and achieves a FOM of 162.6 dB. |
| Starting Page | 1 |
| Ending Page | 4 |
| File Size | 2416982 |
| Page Count | 4 |
| File Format | |
| e-ISBN | 9781479972340 |
| DOI | 10.1109/BioCAS.2015.7348403 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2015-10-22 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Sigma-delta modulation Bandwidth Switches Dynamic range Amperometry Current Mode Sigma Delta Modulator Capacitance Nanobioscience Clocks Bio-Sensor |
| Content Type | Text |
| Resource Type | Article |
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