公开(公告)号：US20220416743A1

公开(公告)日：2022-12-29

申请号：US17839335

申请日：2022-06-13

Applicant: STMicroelectronics S.r.l.

Inventor： Roberto MODAFFARI ,  Paolo PESENTI ,  Mario MAIORE ,  Tiziano CHIARILLO

IPC: H03F3/70 ,  G01R27/26

Abstract: A circuit includes an amplifier, a bias voltage node, and a first set of switches configured, based on a first reset signal having a first value, to couple first and second input nodes to the bias voltage node and to couple first and second output nodes of the amplifier. First and second feedback branches each include a respective RC network including a plurality of capacitances. The first and second feedback branches further include a second set of switches intermediate input nodes and the capacitances, and a third set of switches intermediate input nodes and the plurality of capacitances. These switches selectively couple the capacitances to the input nodes and output nodes, based on a second reset signal having a first value. The second reset signal keeps the first value for a determined time interval exceeding a time interval in which the first reset signal has the first value.

公开(公告)号：US20240275347A1

公开(公告)日：2024-08-15

申请号：US18634675

申请日：2024-04-12

Applicant: STMicroelectronics S.r.l.

Inventor： Roberto MODAFFARI ,  Paolo PESENTI ,  Mario MAIORE ,  Tiziano CHIARILLO

IPC: H03F3/70 ,  G01R27/26 ,  H03F3/45

CPC classification number: H03F3/70 ,  G01R27/2605 ,  H03F3/45968 ,  H03F2200/375

Abstract: A circuit includes an amplifier, a bias voltage node, and a first set of switches configured, based on a first reset signal having a first value, to couple first and second input nodes to the bias voltage node and to couple first and second output nodes of the amplifier. First and second feedback branches each include a respective RC network including a plurality of capacitances. The first and second feedback branches further include a second set of switches intermediate input nodes and the capacitances, and a third set of switches intermediate input nodes and the plurality of capacitances. These switches selectively couple the capacitances to the input nodes and output nodes, based on a second reset signal having a first value. The second reset signal keeps the first value for a determined time interval exceeding a time interval in which the first reset signal has the first value.

公开(公告)号：US20220225003A1

公开(公告)日：2022-07-14

申请号：US17567777

申请日：2022-01-03

Applicant: STMicroelectronics S.r.l.

Inventor： Enrico Rosario ALESSI ,  Fabio PASSANITI ,  Tiziano CHIARILLO ,  Massimiliano PESATURO

IPC: H04R1/10 ,  H04R29/00 ,  G01R29/12

Abstract: A detection device includes a pressure sensor, which provides a pressure signal indicative of an ambient pressure in an operating environment. An electrostatic-charge-variation sensor provides a charge-variation signal indicative of a variation of electrostatic charge associated with the operating environment, and processing circuitry is coupled to the pressure sensor and to the electrostatic-charge-variation sensor so as to receive the pressure signal and the charge-variation signal, and jointly processes the pressure signal and the charge-variation signal for detecting a variation between a first operating environment and a second operating environment for the detection device. The second operating environment is different from the first operating environment.

公开(公告)号：US20140292411A1

公开(公告)日：2014-10-02

申请号：US14304589

申请日：2014-06-13

Applicant: STMicroelectronics (Grenoble 2) SAS ,  STMicroelectronics, S.r.l.

Inventor： MarcoOrazio CAVALLARO ,  Serge RAMET ,  Tiziano CHIARILLO

IPC: H03F3/45

CPC classification number: H03F3/45179 ,  H03F1/308 ,  H03F3/3013 ,  H03F3/45183 ,  H03F2203/45054

Abstract: A class AB operational amplifier includes an input stage, an output stage and a level shifter stage to control the quiescent current of the output stage and to transfer the signal from the input stage to the output stage, and a control circuit of the level shifter stage. The control circuit includes a transistor differential pair having a differential input terminals and the differential voltage at the differential terminals of the differential pair controls the level shifter stage.

Abstract translation: AB类运算放大器包括输入级，输出级和电平移位级，以控制输出级的静态电流并将信号从输入级传送到输出级，以及电平转换级的控制电路 。 控制电路包括具有差分输入端的晶体管差分对，差分对的差分端的差分电压控制电平转换级。