公开(公告)号：US12088286B2

公开(公告)日：2024-09-10

申请号：US17364206

申请日：2021-06-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Chengxi Liu ,  Roy Alan Hastings

IPC: H03K17/14 ,  G01K7/01 ,  H01L21/8222 ,  H01L29/417 ,  H01L29/73 ,  G05F3/22 ,  G05F3/24

CPC classification number: H03K17/14 ,  G01K7/01 ,  H01L21/8222 ,  H01L29/41708 ,  G05F3/225 ,  G05F3/242 ,  H01L29/73

Abstract: In examples, a circuit comprises a first current source coupled to a voltage source node. The circuit comprises a resistor having a first resistor terminal and a second resistor terminal, where the first resistor terminal is coupled to the first current source. The circuit comprises a bipolar transistor having a base, a collector, and an emitter, with the base coupled to the first resistor terminal, the emitter coupled to the second resistor terminal, and the collector coupled to the voltage source node. The circuit comprises a second current source coupled to the emitter and the second resistor terminal, with the second current source coupled to a ground node. The circuit comprises a Schmitt trigger having an input coupled to the emitter, the second resistor terminal, and the second current source.

公开(公告)号：US20230178546A1

公开(公告)日：2023-06-08

申请号：US18161118

申请日：2023-01-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Chengxi Liu ,  Roy Hastings

IPC: H01L27/08 ,  H01C17/232 ,  H01L21/66

CPC classification number: H01L27/0802 ,  H01C17/232 ,  H01L22/00

Abstract: Systems, methods, and circuitries are provided for calibrating a heater used to heat an adjustable resistance network during a trimming procedure. In one example, a circuit is provided that includes an adjustable resistance network including first resistance segments; a heater element thermally coupled to the adjustable resistance network; a calibration resistor including second resistance segments thermally coupled to the first resistance segments; and interface circuitry coupled to the calibration resistor.

公开(公告)号：US11594532B2

公开(公告)日：2023-02-28

申请号：US16914822

申请日：2020-06-29

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Chengxi Liu ,  Roy Hastings

IPC: H01L27/08 ,  H01C17/232 ,  H01L21/66

Abstract: Systems, methods, and circuitries are provided for calibrating a heater used to heat an adjustable resistance network during a trimming procedure. In one example, a circuit is provided that includes an adjustable resistance network including first resistance segments; a heater element thermally coupled to the adjustable resistance network; a calibration resistor including second resistance segments thermally coupled to the first resistance segments; and interface circuitry coupled to the calibration resistor.

公开(公告)号：US20210407992A1

公开(公告)日：2021-12-30

申请号：US16914822

申请日：2020-06-29

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Chengxi Liu ,  Roy Hastings

IPC: H01L27/08 ,  H01C17/232

Abstract: Systems, methods, and circuitries are provided for calibrating a heater used to heat an adjustable resistance network during a trimming procedure. In one example, a circuit is provided that includes an adjustable resistance network including first resistance segments; a heater element thermally coupled to the adjustable resistance network; a calibration resistor including second resistance segments thermally coupled to the first resistance segments; and interface circuitry coupled to the calibration resistor.