Tipo di tesi
Tesi di laurea magistrale
Titolo
Stable Frequency Reference for CMOS Electrochemical Impedance Spectroscopy Systems
Dipartimento
INGEGNERIA DELL'INFORMAZIONE
Corso di studi
INGEGNERIA ELETTRONICA
Parole chiave
- custom digital cells.
- Frequency stability
- level shifter
- MOSFET oscillators
- oscillator noise
- passgate
- relaxation oscillators
Data inizio appello
03/05/2013
Consultabilità
Non consultabile
Data di rilascio
03/05/2053
Riassunto (Italiano)
To have a stable frequency reference for electrochemical impedance system, an on-chip CMOS relaxation oscillator, with voltage averaging feedback using a reference proportional to supply voltage is presented. A voltage averaging feedback concept is proposed to overcome conventional relaxation oscillator problems such as sensitivity to comparator delay, aging, and flicker noise of current sources. In addition as auxiliary system, we have done level shifter, passgate, custom digital cells.
