公开(公告)号：US20240204686A1

公开(公告)日：2024-06-20

申请号：US18526547

申请日：2023-12-01

Applicant: STMicroelectronics International N.V.

Inventor： Vincent BINET

IPC: H02M7/53846 ,  H02M7/538 ,  H02M7/5388

CPC classification number: H02M7/538466 ,  H02M7/53803 ,  H02M7/5388

Abstract: According to one aspect, an integrated circuit is provided comprising: a digital-to-analog converter (MDAC) configured to convert a digital word (DIGW) into an analog signal (SDAC), a switching circuit including: a first transistor (PMOS1) having a drain configured to receive the analog signal (SDAC) and a source connected to a drain of a second transistor (PMOS2) and a third transistor (NMOS1) having a drain configured to receive the analog signal (SDAC) and a source connected to a drain of a fourth transistor (NMOS2); a voltage control circuit configured to apply a voltage on the source of the first transistor (PMOS1) and on the source of the third transistor (NMOS1) so as to limit a drain-source voltage of the first transistor (PMOS1) and a drain-source voltage of the third transistor (NMOS1) regardless of the value of said digital word.

公开(公告)号：US20240201024A1

公开(公告)日：2024-06-20

申请号：US18537473

申请日：2023-12-12

Applicant: STMicroelectronics International N.V.

Inventor： Vincent BINET ,  Sebastien ORTET

IPC: G01K7/01

CPC classification number: G01K7/015

Abstract: An integrated circuit temperature sensor includes two diode-connected bipolar transistors having different sizes. A switching circuit selectively applies the base-emitter voltages generated across the two diode-connected bipolar transistors to the input of a buffer circuit. A control unit controls alternate switching by the switching circuit. An analog-to-digital converter has an input connected to an output of the buffer circuit. The analog-to-digital converter calculates a numeric value corresponding to a difference between the voltages generated across the two diode-connected bipolar transistors, this difference in voltages being proportional to absolute temperature.