Patents by Inventor Amit KUNDU

Amit KUNDU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20150115717
    Abstract: A voltage reference circuit is provided that includes a first circuit, a second circuit and a third circuit. The first circuit has a first MOS transistor pair and the second circuit has a second MOS transistor pair. The first circuit is configured to provide a first voltage component that changes at a first rate having a first slope as a temperature to which the voltage reference circuit is subjected changes. The second circuit is configured to provide a second voltage component that changes at a second rate having a second slope as the temperature changes. The third circuit is configured to use the first voltage component and the second voltage component to generate the reference voltage component that changes at a fifth rate having a fifth slope as the temperature changes. The fifth slope is substantially equal to zero to promote insensitivity of the reference voltage component to temperature changes.
    Type: Application
    Filed: October 25, 2013
    Publication date: April 30, 2015
    Applicant: Taiwan Semiconductor Manufacturing Company Limited
    Inventors: Jaw-Juinn Horng, Amit Kundu, Chung-Hui Chen, Yung-Chow Peng
  • Publication number: 20150035568
    Abstract: A circuit with a temperature detector includes a first FET and a second FET. Each of the first and second FETs has a channel structure having a non-planar structure. The second FET is in close proximity to the first FET. A gate of the second FET is separated from the first FET, and a source and drain of the second FET are shorted together. A resistance of the gate of the second FET between two terminals on the gate of the second FET varies with a temperature local to the first FET.
    Type: Application
    Filed: August 1, 2013
    Publication date: February 5, 2015
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventors: YUNG-CHOW PENG, AMIT KUNDU, SZU-LIN LIU, JAW-JUINN HORNG
  • Publication number: 20140372959
    Abstract: A system and method for designing integrated circuits and predicting current mismatch in a metal oxide semiconductor (MOS) array. A first subset of cells in the MOS array is selected and current measured for each of these cells. Standard deviation of current for each cell in the first subset of cells is determined with respect to current of a reference cell. Standard deviation of local variation can be determined using the determined standard deviation of current for one or more cells in the first subset. Standard deviations of variation induced by, for example, poly density gradient effects, in the x and/or y direction of the array can then be determined and current mismatch for any cell in the array determined therefrom.
    Type: Application
    Filed: August 25, 2014
    Publication date: December 18, 2014
    Inventors: Amit KUNDU, Jaw-Juinn HORNG, Yung-Chow PENG, Shih-Cheng YANG, Chung-Kai LIN
  • Patent number: 8832619
    Abstract: A system and method for designing integrated circuits and predicting current mismatch in a metal oxide semiconductor (MOS) array. A first subset of cells in the MOS array is selected and current measured for each of these cells. Standard deviation of current for each cell in the first subset of cells is determined with respect to current of a reference cell. Standard deviation of local variation can be determined using the determined standard deviation of current for one or more cells in the first subset. Standard deviations of variation induced by, for example, poly density gradient effects, in the x and/or y direction of the array can then be determined and current mismatch for any cell in the array determined therefrom.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: September 9, 2014
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Amit Kundu, Jaw-Juinn Horng, Yung-Chow Peng, Shih-Cheng Yang, Chung-Kai Lin
  • Publication number: 20140215419
    Abstract: A system and method for designing integrated circuits and predicting current mismatch in a metal oxide semiconductor (MOS) array. A first subset of cells in the MOS array is selected and current measured for each of these cells. Standard deviation of current for each cell in the first subset of cells is determined with respect to current of a reference cell. Standard deviation of local variation can be determined using the determined standard deviation of current for one or more cells in the first subset. Standard deviations of variation induced by, for example, poly density gradient effects, in the x and/or y direction of the array can then be determined and current mismatch for any cell in the array determined therefrom.
    Type: Application
    Filed: January 28, 2013
    Publication date: July 31, 2014
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Amit KUNDU, Jaw-Juinn HORNG, Yung-Chow PENG, Shih-Cheng YANG, Chung-Kai LIN