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. 05, 2009
Filed:
Jun. 28, 2006
Sumer Can, San Jose, CA (US);
Sumer Can, San Jose, CA (US);
Intersil Americas Inc., Milpitas, CA (US);
Abstract
A voltage comparator contains low voltage devices (e.g., bipolar or MOS transistors) and high voltage devices (e.g., DMOS transistors). The low voltage devices, which cannot sustain a voltage greater than a relatively small range of variation that is substantially less than the range of potential variation of the input voltage, are connected in a differential amplifier configuration to perform precision differential measurements on the input voltage. The high voltage devices are interconnected with the low voltage devices in a manner that enables operating levels of the low voltage devices to move up/down, or 'slide', with variations in the input voltage, so that the low voltage devices are effectively immune to high levels of the input voltage.