| Autor: |
Danneels, H., Van Rethy, J., Vergauwen, J., Gielen, G. |
| Zdroj: |
Procedia Engineering; Dec2012, Vol. 47, p1319-1322, 4p |
| Abstrakt: |
Abstract: Time-/frequency-to-digital conversion is gaining in popularity since it benefits from the improved timing resolution in new technologies whereas voltage processing suffers from the reduced supply voltage. Sensor signals however are small compared to other signal processing fields. Therefore, offset in the building blocks of the interface results in a significant degradation of the desired signal. While a lot of dynamic offset cancellation techniques are available for the voltage information domain (chopping, autozeroing,…), techniques for the frequency information domain are not investigated yet. This paper describes an offset compensation mechanism that overcomes this problem. Simulation results in XFAB 0.35 μm CMOS technology demonstrate reduced offset drift from around 10% to 0.5%. [Copyright &y& Elsevier] |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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