A CONTINUOUS-TIME FIRST ORDER Σ-Δ CONVERTER WITH OFFSET CALIBRATION FOR BIOLOGICAL APPLICATION |
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| F. Borghetti, N. Massari, D. Stoppa, A. Adami, L. Lorenzelli |
- Abstract:
- In the present paper, a continuous time Σ?-Δ converter for biological application is presented. The implemented ASIC has been designed for reading piezo-resistive MEMS cantilever used as DNA detector. The readout channel consists of a first analog front-end circuit able to reduce possible input offset and electronic mismatch, followed by a continuous-time 9b first order Σ?-Δ converter for digital conversion. Simulation results show a circuit accuracy on the measurement of resistance variation in the order of 10 ppm within a maximum range of 10%.
- Download:
- IMEKO-IWADC-2011-38.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC4
- Event name:
- IWADC 2011
- Title:
16th IMEKO International Workshop on ADC Modeling and Testing - Data Converter Design, Modeling and Testing (together with IEEE ADC Forum) (IWADC)
- Place:
- Orvieto, ITALY
- Time:
- 30 June 2011 - 01 July 2011