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公开(公告)号：US20240103558A1
公开(公告)日：2024-03-28
申请号：US17950276
申请日：2022-09-22
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Sudheer Gangula , Jerry Doorenbos , Dimitar Trifonov
IPC: G05F3/26
CPC classification number: G05F3/265
Abstract: Examples of bandgap circuits and elements thereof enable generation of an accurate and stable bandgap reference voltage that is not affected by low current gain. An example circuit includes first and second input transistors, each having an emitter to receive a tail current; first and second core transistors, a collector of each coupled to ground; a first lower leg coupled between a first upper leg and the emitter of the first core transistor at a first current input coupled to the base of the first input transistor; a second lower leg coupled between a second upper leg and the emitter of the second core transistor at a second current input coupled to the base of the second input transistor; and a base resistor coupled between the base and collector of the first core transistor. The input transistor pair has a current density ratio that is the same as that of the core transistor pair.
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公开(公告)号：US20240339977A1
公开(公告)日：2024-10-10
申请号：US18498492
申请日：2023-10-31
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Dimitar Trifonov , Chao-Hsiuan Tsay , Chase Puglisi
IPC: H03F3/45
CPC classification number: H03F3/45381 , H03F3/45636 , H03F2203/45008
Abstract: In some examples, an amplifier includes a pair of input differential transistors a pair of feedback transistors, a pair of current sources, a pair of gain setting resistors, and a tail current transistor. Control terminals of the feedback transistors are respectively coupled to first terminals of the input differential transistors. The pair of current sources are respectively coupled to the control terminals of the feedback transistors and the first terminals of the input differential transistors. The pair of gain setting resistors have first terminals that are respectively coupled to the second terminals of the input differential transistors. The pair of gain setting resistors have second terminals that are coupled to one another. The tail current transistor has a first terminal coupled to the second terminals of the gain setting resistors and a second terminal coupled to a DC supply.
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公开(公告)号：US20220075007A1
公开(公告)日：2022-03-10
申请号：US17015347
申请日：2020-09-09
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Keith Ryan Green , Dimitar Trifonov , Tony Ray Larson
Abstract: A semiconductor device includes first and second Hall-effect sensors. Each sensor has first and third opposite terminals and second and fourth opposite terminals. A control circuit is configured to direct a current through the first and second sensors and to measure a corresponding Hall voltage of the first and second sensors. Directing includes applying a first source voltage in a first direction between the first and third terminals of the first sensor and applying a second source voltage in a second direction between the first and third terminals of the second sensor. A third source voltage is applied in a third direction between the second and fourth terminals of the first sensor, and a fourth source voltage is applied in a fourth direction between the second and fourth terminals of the second sensor. The third direction is rotated clockwise from the first direction and the fourth direction rotated counter-clockwise from the second direction.
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公开(公告)号：US12081182B2
公开(公告)日：2024-09-03
申请号：US18049831
申请日：2022-10-26
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ankit Khanna , Dimitar Trifonov , Partha Basu , Chase Puglisi
CPC classification number: H03F3/45475 , G11C7/06 , H02P23/14 , H03K3/037 , H03K19/20 , H03F2200/462 , H03F2200/474
Abstract: A current sense amplifier includes a first amplifier stage, a second amplifier stage, a switch, and a common-mode transient detector. The first amplifier stage has a first amplifier output, a second amplifier output, a first amplifier input, and a second amplifier input. The second amplifier stage has a third amplifier input coupled to the first amplifier output, and a fourth amplifier input coupled to the second amplifier output. The switch has a switch control input, a first switch terminal coupled to the third amplifier input, and a second switch terminal coupled to the fourth amplifier input. The common-mode transient detector circuit has a detector output, a first detector input and a second detector input. The detector output is coupled to the switch control input. The first detector input is coupled to the first amplifier input. The second detector input is coupled to the second amplifier input.
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5.发明公开公开(公告)号：US20240178807A1
公开(公告)日：2024-05-30
申请号：US18070215
申请日：2022-11-28
Applicant: Texas Instruments Incorporated
Inventor： Ankit Khanna , Dimitar Trifonov , Partha S. Basu , Chase Puglisi
CPC classification number: H03F3/45475 , H03F1/086 , H03F2200/261 , H03F2200/462 , H03F2203/45134
Abstract: An example apparatus includes: a transconductance stage including: a fully differential amplifier configured to generate a differential current based on a voltage input; and a transistor configured to be controlled by an output of the fully differential amplifier and source current from an input of the fully differential amplifier; and a transimpedance stage coupled to the transconductance stage, the transimpedance stage including: resistor circuitry configured to convert the differential current into a differential voltage using a first resistance, a second resistance, and a third resistance; and a differential amplifier configured to convert the differential voltage to a single-ended voltage, which represents the voltage input.
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Patent Agency Ranking
公开(公告)号：US20240146265A1
公开(公告)日：2024-05-02
申请号：US17977840
申请日：2022-10-31
Applicant: Texas Instruments Incorporated
Inventor： Ankit Khanna , Dimitar Trifonov , Partha S. Basu , Sudheer Gangula
IPC: H03F3/45
CPC classification number: H03F3/45475 , H03F2203/45594
Abstract: An example apparatus includes: a differential amplifier including: an inverting input coupled to a first input via a first resistor; a non-inverting input coupled to a second input via a second resistor; a first supply input coupled to the first input via a third resistor, and the first supply input coupled to the second input via a fourth resistor; a second supply input coupled to a current source; a non-inverting output; and an inverting output; a first transistor including a first control terminal and a first current terminal, the first control terminal coupled to the non-inverting output and the first current terminal coupled to the inverting input; and a second transistor including a second control terminal and a second current terminal, the second control terminal coupled to the inverting output and the second current terminal coupled to the non-inverting input.
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公开(公告)号：US20230048022A1
公开(公告)日：2023-02-16
申请号：US17402019
申请日：2021-08-13
Applicant: Texas Instruments Incorporated
Inventor： Charles Parkhurst , Gabriel Eugenio De La Cruz Hernandez , Keith Ryan Green , Dimitar Trifonov , Chao-Hsuian Tsay
Abstract: A Hall effect sensor including a Hall element disposed at a surface of a semiconductor body, including a first doped region of a first conductivity type disposed over and abutted by an isolated second doped region of a second conductivity type. First through fourth terminals of the Hall element are in electrical contact with the first doped region, and a fifth terminal in electrical contact with the second doped region. A Hall effect sensor includes a first current source coupled to the first terminal of the Hall element, and common mode feedback regulation circuitry. The common mode feedback regulation circuitry has an output coupled to the third terminal and a ground node, and having an input coupled to the second and fourth terminals of the Hall element, and an output coupled to the third terminal and a ground node, where the second doped region is coupled to the third terminal.
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公开(公告)号：US11333719B2
公开(公告)日：2022-05-17
申请号：US17015347
申请日：2020-09-09
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Keith Ryan Green , Dimitar Trifonov , Tony Ray Larson
Abstract: A semiconductor device includes first and second Hall-effect sensors. Each sensor has first and third opposite terminals and second and fourth opposite terminals. A control circuit is configured to direct a current through the first and second sensors and to measure a corresponding Hall voltage of the first and second sensors. Directing includes applying a first source voltage in a first direction between the first and third terminals of the first sensor and applying a second source voltage in a second direction between the first and third terminals of the second sensor. A third source voltage is applied in a third direction between the second and fourth terminals of the first sensor, and a fourth source voltage is applied in a fourth direction between the second and fourth terminals of the second sensor. The third direction is rotated clockwise from the first direction and the fourth direction rotated counter-clockwise from the second direction.
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公开(公告)号：US10587267B2
公开(公告)日：2020-03-10
申请号：US16402262
申请日：2019-05-03
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Biraja Prasad Dash , Ravinthiran Balasingam , Dimitar Trifonov
IPC: H03L5/00 , H03K3/356 , H03K19/0185
Abstract: In some examples, a level shifter circuit comprises: a first transistor pair cascoded at a first input node; a second transistor pair cascoded at a second input node, wherein the first and transistor pairs couple at a first node, a second node, a third node, and a fourth node; a third transistor pair coupled to the first transistor pair at the first and the third nodes, wherein the third transistor pair is configured to generate a first bipolar clock signal; a fourth transistor pair coupled to the second transistor pair at the second and the fourth nodes, wherein the fourth transistor pair is configured to generate a second bipolar clock signal; and a clock generation circuit coupled to the first node, the second node, the third node, and the fourth node.
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公开(公告)号：US10530302B2
公开(公告)日：2020-01-07
申请号：US16042436
申请日：2018-07-23
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ravinthiran Balasingam , Dimitar Trifonov , Biraja Prasad Dash
Abstract: A circuit, comprising an input chopper configured to receive an input signal, a differential amplifier having an input coupled to an output of the input chopper, a current mode chopping circuit coupled to an output of the differential amplifier, and a first current mirror bias transistor pair coupled between a voltage supply and the current mode chopping circuit.
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