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:
Nov. 30, 1999
Filed:
Jun. 15, 1998
Philippe Gandy, Thaon, FR;
U.S. Philips Corporation, New York, NY (US);
Abstract
The circuit, arranged between a source of higher voltage (VCC) and a source of lower voltage (ground), comprises an analog/digital converter (ADC) which has a resistor ladder (RL) connected between a top terminal (Vtop), a bottom terminal (Vbot) for supplying a series of reference voltages. According to the invention, this circuit includes a bias generator arrangement formed by a resistor (Rmid) connected on one side to the supply voltage source and on the other side to a reference current source (Ip0), and automatic control means (A2) for controlling a variable impedance element (T5) inserted between the connection (Vbot) at the bottom of the ladder and ground, which automatic control means are suitable for controlling the voltage (FS) at the terminals of the resistor ladder.