-
公开(公告)号：US10574247B1
公开(公告)日：2020-02-25
申请号：US16131886
申请日：2018-09-14
Applicant: Analog Devices Global Unlimited Company
Inventor： Junbiao Ding , Tony Yincai Liu , Dennis A. Dempsey , John Jude O'Donnell
Abstract: The present disclosure relates to a digital-to-analog converter (DAC) which includes a resistor string and a transfer function modification circuit. The transfer function modification circuit may be a calibration circuit for calibrating the DAC, The calibration circuit may include a plurality of current sources, which may be current DACs. Each of the current DACS inject current into, or drain current from, a respective node of the resistor string, in order to correct for voltage errors. The injected currents may be positive or negative, depending on the voltage error. The current DACs are controlled by trim codes, which are set dependent on the measured or simulated voltage errors for a given resistor string.
-
公开(公告)号：US20180321302A1
公开(公告)日：2018-11-08
申请号：US15586869
申请日：2017-05-04
Applicant: Analog Devices Global
Inventor： GuangYang Qu , Junbiao Ding , Tony Yincai Liu , Shurong Gu , Yimiao Zhao , Hanqing Wang , Leicheng Chen
CPC classification number: G01R31/2829 , G01N27/416 , G01N27/4163 , G01N27/4175 , G01R15/16 , G01R27/02
Abstract: A electrochemical or other sensor interface circuit architecture can deliver substantial DC offset bias to an electrochemical or other sensor separately or independently from delivering a time-varying AC excitation signal, which can then be provided with higher resolution, which, in turn, can allow better resolution of the measured response signal providing the impedance characteristic of sensor condition. For example, a differential time-varying AC excitation signal for the sensor condition characteristic can be delivered separately and independently from a differential stable (e.g., DC or other) bias signal, such as by using separate digital-to-analog converters (DACs), so that providing the more stable signal does not limit the resolution and accuracy of the time-varying signal, such as by using up the dynamic range of a single DAC.
-
Patent Agency Ranking
公开(公告)号：US20180196101A1
公开(公告)日：2018-07-12
申请号：US15433862
申请日：2017-02-15
Applicant: Analog Devices Global
Inventor： Guangyang Qu , Yincai Tony Liu , Baotian Hao , Hanqing Wang , Hengfang Mei , Rengui Luo , Yimiao Zhao , Junbiao Ding
IPC: G01R31/28 , G01N27/416 , G01N27/12 , G01N33/00
CPC classification number: G01R31/2829 , G01N27/122 , G01N27/4163 , G01N33/0057 , G01R27/02 , G01R27/16 , G01R35/005
Abstract: An apparatus comprises a load resistance connectable in series with the electronic sensor to form a series resistance of the load resistance and the internal impedance of the electronic sensor; an excitation circuit configured to apply a predetermined voltage to a circuit element; and a measurement circuit configured to: initiate applying the predetermined voltage to the series resistance and determining the series resistance; initiate applying the predetermined voltage to the load resistance and determining the load resistance; and calculate the internal impedance of the sensor using the determined series resistance and the load resistance, and provide the calculated internal impedance to a user or process.
-
公开(公告)号：US10288674B2
公开(公告)日：2019-05-14
申请号：US15586869
申请日：2017-05-04
Applicant: Analog Devices Global
Inventor： GuangYang Qu , Junbiao Ding , Tony Yincai Liu , Shurong Gu , Yimiao Zhao , Hanqing Wang , Leicheng Chen
IPC: G01R31/28 , G01R15/16 , G01R27/02 , G01N27/417 , G01N27/416
Abstract: A electrochemical or other sensor interface circuit architecture can deliver substantial DC offset bias to an electrochemical or other sensor separately or independently from delivering a time-varying AC excitation signal, which can then be provided with higher resolution, which, in turn, can allow better resolution of the measured response signal providing the impedance characteristic of sensor condition. For example, a differential time-varying AC excitation signal for the sensor condition characteristic can be delivered separately and independently from a differential stable (e.g., DC or other) bias signal, such as by using separate digital-to-analog converters (DACs), so that providing the more stable signal does not limit the resolution and accuracy of the time-varying signal, such as by using up the dynamic range of a single DAC.
-
公开(公告)号：US20200033398A1
公开(公告)日：2020-01-30
申请号：US16584212
申请日：2019-09-26
Applicant: Analog Devices Global
Inventor： GuangYang Qu , Yincai Tony Liu , Baotain Hao , Hanqing Wang , Hengfang Mei , Rengui Luo , Yimiao Zhao , Junbiao Ding
Abstract: An apparatus comprises a load resistance connectable in series with the electronic sensor to form a series resistance of the load resistance and the internal impedance of the electronic sensor; an excitation circuit configured to apply a predetermined voltage to a circuit element; and a measurement circuit configured to: initiate applying the predetermined voltage to the series resistance and determining the series resistance; initiate applying the predetermined voltage to the load resistance and determining the load resistance; and calculate the internal impedance of the sensor using the determined series resistance and the load resistance, and provide the calculated internal impedance to a user or process.
-
公开(公告)号：US10466296B2
公开(公告)日：2019-11-05
申请号：US15433862
申请日：2017-02-15
Applicant: Analog Devices Global
Inventor： Guangyang Qu , Yincai Tony Liu , Baotian Hao , Hanqing Wang , Hengfang Mei , Rengui Luo , Yimiao Zhao , Junbiao Ding
Abstract: An apparatus comprises a load resistance connectable in series with the electronic sensor to form a series resistance of the load resistance and the internal impedance of the electronic sensor; an excitation circuit configured to apply a predetermined voltage to a circuit element; and a measurement circuit configured to: initiate applying the predetermined voltage to the series resistance and determining the series resistance; initiate applying the predetermined voltage to the load resistance and determining the load resistance; and calculate the internal impedance of the sensor using the determined series resistance and the load resistance, and provide the calculated internal impedance to a user or process.
-
公开(公告)号：US20200091923A1
公开(公告)日：2020-03-19
申请号：US16131886
申请日：2018-09-14
Applicant: Analog Devices Global Unlimited Company
Inventor： Junbiao Ding , Tony Yincai Liu , Dennis A. Dempsey , John Jude O'Donnell
Abstract: The present disclosure relates to a digital-to-analog converter (DAC) which includes a resistor string and a transfer function modification circuit. The transfer function modification circuit may be a calibration circuit for calibrating the DAC, The calibration circuit may include a plurality of current sources, which may be current DACs. Each of the current DACS inject current into, or drain current from, a respective node of the resistor string, in order to correct for voltage errors. The injected currents may be positive or negative, depending on the voltage error. The current DACs are controlled by trim codes, which are set dependent on the measured or simulated voltage errors for a given resistor string.
-
-
-
-
-
-
Search Results
7
records
(took 0.015 seconds)
