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:
Mar. 21, 2006
Filed:
Nov. 30, 2004
Youssef H. Atris, Gilbert, AZ (US);
Brandt Braswell, Chandler, AZ (US);
Douglas A. Garrity, Gilbert, AZ (US);
Zhou Zhixu, Gilbert, AZ (US);
Youssef H. Atris, Gilbert, AZ (US);
Brandt Braswell, Chandler, AZ (US);
Douglas A. Garrity, Gilbert, AZ (US);
Zhou Zhixu, Gilbert, AZ (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
A method and apparatus are provided for reducing the size and power of cyclic analog-to-digital converter (ADC) conversion circuits. During each cycle, the ADC conversion circuit generates a plurality of bits. The improved ADC includes a scaling/reference circuit having a single operational amplifier which operates in a reference generation mode and an analog multiplexing mode during generation of the first bit and operates in the analog multiplexing mode during generation of the subsequent bits.