公开(公告)号：MY165440A

公开(公告)日：2018-03-22

申请号：MYPI2011700200

申请日：2011-12-20

Applicant: MIMOS BERHAD

Inventor： NG MEI YEE ,  TAN KONG YEW

IPC: H03M1/14 ,  H03M1/12 ,  H03M1/42 ,  H03M1/46

Abstract: THE PRESENT INVENTION RELATES TO AN ANALOG TO DIGITAL CONVERTER (100). THE ANALOG TO DIGITAL CONVERTER (100) RESOLVES THE MOST SIGNIFICANT BITS BY USING ASYNCHRONOUS BINARY SEARCH METHOD AND THE REMAINING BITS BY USING CHARGE REDISTRIBUTION METHOD. THE ANALOG TO DIGITAL CONVERTER (100) COMPRISES OF A SAMPLE AND HOLD CIRCUIT (110), AN ANALOG COMPARATOR (120), A SUCCESSIVE APPROXIMATION REGISTER (130), A BINARY TREE OF COMPARATORS (140) AND A DIGITAL TO ANALOG CONVERTER OR DAC (150).

公开(公告)号：WO2011065811A2

公开(公告)日：2011-06-03

申请号：PCT/MY2010000279

申请日：2010-11-16

Applicant: MIMOS BERHAD ,  NG MEI YEE ,  YUZMAN YUSOFF

Inventor： NG MEI YEE ,  YUZMAN YUSOFF

IPC: G01N27/414 ,  G01N27/416

CPC classification number: G01N27/4163 ,  G01N27/4148

Abstract: The system (100) and method (200) according to the present invention utilizes the light source (105) component in compensating thermal and time drift effect of ISFET sensor (100). A compensating circuit that has variable gain to fine-tune the slope of LED (105) drift such that it matches that of the ISFET (100) drift is applied. Thereafter, a cancellation circuit is used to cancel off the slope of time and temperature drift of the ISFET sensor (100). The LED (105) is employed due to its insensitivity to pH which results in the pH value being accurate.

Abstract translation: 根据本发明的系统（100）和方法（200）利用光源（105）部件来补偿ISFET传感器（100）的热和时间漂移效应。 应用具有可变增益以补偿LED（105）漂移的斜率以使其与ISFET（100）漂移的斜率相匹配的补偿电路。 此后，使用消除电路来消除ISFET传感器（100）的时间斜率和温度漂移。 LED（105）由于其对pH不敏感而被使用，导致pH值准确。