The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 21, 2002
Filed:
Nov. 30, 1994
Applicant:
Inventors:
Silvia Padoan, Rimini, IT;
Carla Golla, Milan, IT;
Assignee:
SGS-Thomson Microelectronics, S.r.l., Agrate Brianza, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/10 ;
U.S. Cl.
CPC ...
G05F 1/10 ;
Abstract
A circuit for generating a stable reference voltage (Vref) as temperature and process parameters vary, including at least one field-effect transistor (M ) and an associated resistive bias element (R) connected in series between a supply voltage (Vcc) and ground (GND), further includes a second field-effect transistor (M ) connected to the first transistor such that the reference voltage (Vref) can be picked up as the difference between the respective threshold voltages of the two transistors. This provides a reference voltage which is uniquely stable against variations in temperature and process parameters.