公开(公告)号：US11683035B2

公开(公告)日：2023-06-20

申请号：US17687768

申请日：2022-03-07

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Yaohua Pan ,  Jun Zhang

IPC: H03K17/96 ,  H03K17/945

CPC classification number: H03K17/9622 ,  H03K17/945 ,  H03K2217/960755

Abstract: A system for sensing touch or proximity include: a first number of input terminals configured to couple one or more capacitive sensors, a second number of transferring units configured to transfer charges from the one or more capacitive sensors through the first number of input terminals in transferring phases of cycles of the one or more capacitive sensor, wherein at least one of the first and second numbers is equal to or greater than two, and a first switching unit, coupled between the first number of input terminals and the second number of transferring units, configured to selectively electrically couple any one of the first number of input terminals to any one of the second number of transferring units in the transferring phases.

公开(公告)号：US20220178727A1

公开(公告)日：2022-06-09

申请号：US17677930

申请日：2022-02-22

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ge Shen ,  Jun Zhang ,  Songhua Hu

IPC: G01D18/00

Abstract: A system generating an electrical signal based on at least one physical quantity, includes sensor units each generating an individual electrical signal in response to the at least one physical quantity, a selecting unit selecting a first number of sensor units from the sensor units and outputting a first combined electrical signal based on the first number of sensor units, and a calibrating unit determining a second number of sensor units to be selected based on the first combined electrical signal.

公开(公告)号：US11280646B2

公开(公告)日：2022-03-22

申请号：US16287654

申请日：2019-02-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ge Shen ,  Jun Zhang ,  Songhua Hu

IPC: G01D18/00

Abstract: A system generating an electrical signal based on at least one physical quantity, includes sensor units each generating an individual electrical signal in response to the at least one physical quantity, a selecting unit selecting a first number of sensor units from the sensor units and outputting a first combined electrical signal based on the first number of sensor units, and a calibrating unit determining a second number of sensor units to be selected based on the first combined electrical signal.

公开(公告)号：US11271565B2

公开(公告)日：2022-03-08

申请号：US16741614

申请日：2020-01-13

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Yaohua Pan ,  Jun Zhang

IPC: H03K17/96 ,  H03K17/945

Abstract: A system for sensing touch or proximity include: a first number of input terminals configured to couple one or more capacitive sensors, a second number of transferring units configured to transfer charges from the one or more capacitive sensors through the first number of input terminals in transferring phases of cycles of the one or more capacitive sensor, wherein at least one of the first and second numbers is equal to or greater than two, and a first switching unit, coupled between the first number of input terminals and the second number of transferring units, configured to selectively electrically couple any one of the first number of input terminals to any one of the second number of transferring units in the transferring phases.

公开(公告)号：US11190200B2

公开(公告)日：2021-11-30

申请号：US16950343

申请日：2020-11-17

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jun Zhang

IPC: H03M1/06 ,  H03M1/68 ,  H03M1/80 ,  H03M1/78 ,  H03M1/76 ,  H03M7/16

Abstract: A digital-to-analog converter for generating an analog output voltage in response to a digital value comprising a plurality of bits, the converter including: (i) a first switched resistor network having a first configuration and for converting a first input differential signal into a first analog output in response to a first set of bits in the plurality of bits; and (ii) a second switched resistor network, coupled to the first switched resistor network, having a second configuration, differing from the first configuration, and for converting a second input differential signal into a second analog output in response to a second set of bits in the plurality of bits.

公开(公告)号：US11133818B2

公开(公告)日：2021-09-28

申请号：US16908936

申请日：2020-06-23

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jun Zhang

IPC: H03M1/68 ,  H03M1/66 ,  H03M1/78

Abstract: A integrated circuit device includes digital-to-analog converter (DAC) circuitry including a resistor DAC that includes a resistor-two-resistor DAC configured to receive a first sub-word that includes a most significant bit (MSB) of a digital input signal and to output an analog output signal representative of the first sub-word, a resistor ladder configured to receive the analog output signal and a second sub-word that includes an intermediate significant bit (ISB) of the digital input signal and to generate an analog interpolated signal. The resistor ladder includes a plurality of resistor elements connected in series with one another to define a plurality of tap nodes, wherein a respective tap node is arranged between every two adjacent ones of the resistor elements, and a switching circuit having plurality of switches, wherein each switch is configured to selectively connect a respective one of the tap nodes to an output of the resistor ladder to generate the analog interpolated signal.

公开(公告)号：US20210050852A1

公开(公告)日：2021-02-18

申请号：US16741614

申请日：2020-01-13

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Yaohua Pan ,  Jun Zhang

IPC: H03K17/96

Abstract: A system for sensing touch or proximity include: a first number of input terminals configured to couple one or more capacitive sensors, a second number of transferring units configured to transfer charges from the one or more capacitive sensors through the first number of input terminals in transferring phases of cycles of the one or more capacitive sensor, wherein at least one of the first and second numbers is equal to or greater than two, and a first switching unit, coupled between the first number of input terminals and the second number of transferring units, configured to selectively electrically couple any one of the first number of input terminals to any one of the second number of transferring units in the transferring phases.

公开(公告)号：US10707892B2

公开(公告)日：2020-07-07

申请号：US16423426

申请日：2019-05-28

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jun Zhang

IPC: H03M1/68 ,  H03M1/66 ,  H03M1/78

Abstract: A integrated circuit device includes digital-to-analog converter (DAC) circuitry including a resistor DAC that includes a resistor-two-resistor DAC configured to receive a first sub-word that includes a most significant bit (MSB) of a digital input signal and to output an analog output signal representative of the first sub-word, a resistor ladder configured to receive the analog output signal and a second sub-word that includes an intermediate significant bit (ISB) of the digital input signal and to generate an analog interpolated signal. The resistor ladder includes a plurality of resistor elements connected in series with one another to define a plurality of tap nodes, wherein a respective tap node is arranged between every two adjacent ones of the resistor elements, and a switching circuit having plurality of switches, wherein each switch is configured to selectively connect a respective one of the tap nodes to an output of the resistor ladder to generate the analog interpolated signal.

公开(公告)号：US20200096370A1

公开(公告)日：2020-03-26

申请号：US16287654

申请日：2019-02-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ge Shen ,  Jun Zhang ,  Songhua Hu

IPC: G01D18/00

Abstract: A system generating an electrical signal based on at least one physical quantity, includes sensor units each generating an individual electrical signal in response to the at least one physical quantity, a selecting unit selecting a first number of sensor units from the sensor units and outputting a first combined electrical signal based on the first number of sensor units, and a calibrating unit determining a second number of sensor units to be selected based on the first combined electrical signal.

公开(公告)号：US10312931B2

公开(公告)日：2019-06-04

申请号：US15877098

申请日：2018-01-22

Applicant: Texas Instruments Incorporated

Inventor： Jun Zhang

IPC: H03G3/20 ,  H03M1/18 ,  H03G1/00 ,  H03F1/38 ,  H03M3/00

Abstract: A programmable gain amplifier includes an operational amplifier and a resistor network coupled to the output node of the operational amplifier. The resistor network includes a first plurality of resistors coupled in series between the output node and a first network node. A second plurality of resistors is coupled in series between the first network node and a second network node. A unit resistor is coupled in parallel with the second plurality of resistors between the first and second resistor network nodes and a third plurality of resistors is coupled in parallel between the second resistor network node and a reference voltage. Each resistor of the second and third pluralities of resistors comprises a unit resistor. The third plurality of resistors contains N resistors and the second plurality of resistors contains (N−1) resistors.