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公开(公告)号：US10348258B2
公开(公告)日：2019-07-09
申请号：US15975505
申请日：2018-05-09
Applicant: STMicroelectronics S.r.l.
Inventor： Marco Zamprogno , Maurizio Bongiorni , Pasquale Flora
Abstract: A single-stage differential operational amplifier including an input stage formed by a pair of input transistors having control terminals connected to a respective first and second input, first conduction terminals coupled to a respective first and second output and second conduction terminals coupled to receive a polarization current. An output stage is formed by a pair of output transistors in diode configuration and having control terminals coupled to a relative first conduction terminal and connected to a respective first and second output, and second conduction terminals connected to a reference line. A coupling stage is interposed between the first conduction terminals of the output transistors and the first and second outputs to define the diode configuration of the output transistors and a gain value of the operational amplifier.
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公开(公告)号：US20180131342A1
公开(公告)日：2018-05-10
申请号：US15587579
申请日：2017-05-05
Applicant: STMicroelectronics S.r.l.
Inventor： Marco Zamprogno , Maurizio Bongiorni , Pasquale Flora
CPC classification number: H03G3/30 , H02J7/0063 , H02J7/345 , H03F3/087 , H03F3/45475 , H03F3/45973 , H03F3/45977 , H03F2203/45021 , H03F2203/45114 , H03F2203/45116 , H03F2203/45212 , H03F2203/45288 , H03F2203/45528 , H03F2203/45536 , H04B10/6933
Abstract: A transimpedance amplifier circuit includes a feedback control loop that generates a compensation current at an input of a transimpedance amplifier. The feedback control loop includes a differential integrator with an integration capacitor. A time constant associated with charging the integration capacitor is variable as a function of a pre-charge control signal. During a pre-charge phase, the pre-charge control signal is set to a first value so as to set the time constant associated with charging the integration capacitor to a first time constant value. During an operation phase, the pre-charge control signal is set to a second value so as to increase the time constant associated with charging the integration capacitor to a second time constant value greater than the first time constant value for the pre-charge phase.
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公开(公告)号：US11422044B2
公开(公告)日：2022-08-23
申请号：US16877746
申请日：2020-05-19
Applicant: STMicroelectronics S.r.l.
Inventor： Marco Zamprogno , Andrea Barbieri , Pasquale Flora , Raffaele Enrico Furceri
Abstract: A bridge driver circuit applies a bias voltage across first and second input nodes of a resistive bridge circuit configured to measure a physical property such as pressure or movement. A sensing circuit senses drive current, bias current and common mode current for the bridge driver and sums the sensed currents to generate a source current. The source current is processed to determine a normalized resistance and temperature of the resistive bridge circuit and from which a temperature dependent sensitivity of the resistive bridge circuit is determined. A voltage output at first and second output nodes of the resistive bridge circuit is processed to determine a value of the physical property. This processing further involves applying a temperature correction in response to the determined temperature dependent sensitivity.
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Patent Agency Ranking
公开(公告)号：US10187026B2
公开(公告)日：2019-01-22
申请号：US15587579
申请日：2017-05-05
Applicant: STMicroelectronics S.r.l.
Inventor： Marco Zamprogno , Maurizio Bongiorni , Pasquale Flora
Abstract: A transimpedance amplifier circuit includes a feedback control loop that generates a compensation current at an input of a transimpedance amplifier. The feedback control loop includes a differential integrator with an integration capacitor. A time constant associated with charging the integration capacitor is variable as a function of a pre-charge control signal. During a pre-charge phase, the pre-charge control signal is set to a first value so as to set the time constant associated with charging the integration capacitor to a first time constant value. During an operation phase, the pre-charge control signal is set to a second value so as to increase the time constant associated with charging the integration capacitor to a second time constant value greater than the first time constant value for the pre-charge phase.
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公开(公告)号：US20180342994A1
公开(公告)日：2018-11-29
申请号：US15975505
申请日：2018-05-09
Applicant: STMicroelectronics S.r.l.
Inventor： Marco Zamprogno , Maurizio Bongiorni , Pasquale Flora
IPC: H03F3/45
CPC classification number: H03F3/45273 , H03F1/0205 , H03F3/45183 , H03F3/45188 , H03F3/45192 , H03F3/45632 , H03F2200/513 , H03F2203/45654
Abstract: A single-stage differential operational amplifier including an input stage formed by a pair of input transistors having control terminals connected to a respective first and second input, first conduction terminals coupled to a respective first and second output and second conduction terminals coupled to receive a polarization current. An output stage is formed by a pair of output transistors in diode configuration and having control terminals coupled to a relative first conduction terminal and connected to a respective first and second output, and second conduction terminals connected to a reference line. A coupling stage is interposed between the first conduction terminals of the output transistors and the first and second outputs to define the diode configuration of the output transistors and a gain value of the operational amplifier.
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公开(公告)号：US11146267B1
公开(公告)日：2021-10-12
申请号：US17106574
申请日：2020-11-30
Applicant: STMicroelectronics S.r.l.
Inventor： Franco Consiglieri , Pasquale Flora , Marco Zamprogno
IPC: H03B1/00 , H03K3/00 , H03K17/687 , G02B7/182
Abstract: A charge recovery driver is for a pair of loads, and includes first and second output nodes coupled to a pair of loads. During an initial phase, the first output node is grounded and the second output node is tied to the supply voltage. During a first phase, the first output node is coupled to the first tank capacitor and the second output node is coupled to the second tank capacitor. During a second phase, the first and second output nodes are coupled to one another. During a third phase, the second output node is coupled to the first tank capacitor and the first output node is coupled to the second tank capacitor. During a fourth phase, the first output node is coupled to the supply voltage and the second output node is coupled to ground. The third, second, and first phases are then repeated in that order.
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公开(公告)号：US10897234B2
公开(公告)日：2021-01-19
申请号：US16361930
申请日：2019-03-22
Applicant: STMicroelectronics S.r.l.
Inventor： Marco Zamprogno , Simone Zezza , Pasquale Flora
IPC: H03F3/45
Abstract: A method and apparatus for sensing a common mode feedback current are provided. The common mode feedback current may flow through a common mode resistive divider of a piezoresistive bridge. A first current mirror mirrors the common mode feedback current and provides a first mirrored common mode current. A current aggregation stage receives the first mirrored common mode current and determines a bridge current of the piezoresistive bridge based on the first mirrored common mode feedback current. A second current mirror may be used to mirror the first current mirror before determining the bridge current.
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公开(公告)号：US20200304085A1
公开(公告)日：2020-09-24
申请号：US16361930
申请日：2019-03-22
Applicant: STMicroelectronics S.r.l.
Inventor： Marco Zamprogno , Simone Zezza , Pasquale Flora
IPC: H03F3/45
Abstract: A method and apparatus for sensing a common mode feedback current are provided. The common mode feedback current may flow through a common mode resistive divider of a piezoresistive bridge. A first current mirror mirrors the common mode feedback current and provides a first mirrored common mode current. A current aggregation stage receives the first mirrored common mode current and determines a bridge current of the piezoresistive bridge based on the first mirrored common mode feedback current. A second current mirror may be used to mirror the first current mirror before determining the bridge current.
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