On the design of very small transconductance OTAs with reduced input offset
Resumen:
In this paper it will be demonstrated, from the theory and measurements, that series-parallel (SP) mirrors allow building current copiers with copy factors of thousands, without degrading mismatch or noise performance. SP current-division will be then employed to design OTAs ranging from a few pS to a few nS, with up to 1V linear range, consuming in the order of 100nW, and with a reduced area. An integrated 3.3s time-constant integrator will also be presented. One-by-one several design non-idealities will be revised: linearity, offset, noise, leakages; as well as layout techniques. A final analysis concludes that SP-association of transistors allows to build very efficient transconductors, for demanding applications in the field of implantable electronics among others.
| 2005 | |
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Analog design CMOS Low-power ELECTRÓNICA |
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| Inglés | |
| Universidad de la República | |
| COLIBRI | |
| https://hdl.handle.net/20.500.12008/21158 | |
| Acceso abierto | |
| Licencia Creative Commons Atribución – No Comercial – Sin Derivadas (CC - By-NC-ND) |
