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公开(公告)号：US11953928B2
公开(公告)日：2024-04-09
申请号：US17287465
申请日：2019-09-26
申请人： Sciosense B.V.
摘要： In an embodiment an electric circuit arrangement includes a current generator circuit having a first output terminal and configured to generate an output current, a controller configured to generate control signals to control the current generator circuit, a random code generator configured to generate random codes and a counter configured to generate a count, wherein the current generator circuit comprises a plurality of output current paths and a plurality of controllable switching circuits, wherein each of the output current paths includes a respective electrical component to define a current in the respective output current path, wherein a respective one of the controllable switching circuits is coupled to a respective one of the output current paths to connect the respective electrical component to the first output terminal, and wherein the random code generator is configured to provide a respective code derived from a respective one of the random codes.
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公开(公告)号：US20210389786A1
公开(公告)日：2021-12-16
申请号：US17287865
申请日：2019-10-25
申请人： Sciosense B.V.
摘要： In an embodiment an electro-thermal device includes a heater, a readout circuit, a digital controller having a first input coupled to a first output of the readout circuit and a digital sigma-delta modulator having a first input coupled to an output of the digital controller and an output coupled to the heater.
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公开(公告)号：US11762402B2
公开(公告)日：2023-09-19
申请号：US17287865
申请日：2019-10-25
申请人： Sciosense B.V.
CPC分类号： G05D23/1917 , G05B6/02 , G05D23/2401 , G01N25/18 , G01N27/123
摘要： In an embodiment an electro-thermal device includes a heater, a readout circuit, a digital controller having a first input coupled to a first output of the readout circuit and a digital sigma-delta modulator having a first input coupled to an output of the digital controller and an output coupled to the heater.
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公开(公告)号：US20210409036A1
公开(公告)日：2021-12-30
申请号：US17294903
申请日：2019-11-26
申请人： Sciosense B.V.
摘要： In an embodiment, an ADC converter includes a first injection branch and a second injection branch, a first feedback branch and a second feedback branch, an integration node connected to the first and second injection branches and the first and second feedback branches, an integrator connected to the integration node and a comparator connected downstream of the integrator and configured to generate a comparator output signal to control the first and second feedback branches, wherein the first and second injection branches are configured to provide a charge injection dependent on a respective input quantity to the integration node, wherein the input quantity of the first injection branch is selected from a differential voltage signal, a capacitance dependent signal and a current dependent signal, wherein the input quantity of the second injection branch is selected from another one of the differential voltage signal, the capacitance dependent signal and the current dependent signal, and wherein the first and second feedback branches are configured to provide a feedback charge injection dependent on the comparator output signal to the integration node, the first and second feedback branches configured to receive one of a fixed voltage signal or a differential voltage signal.
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公开(公告)号：US11940402B2
公开(公告)日：2024-03-26
申请号：US17278740
申请日：2019-09-25
申请人： Sciosense B.V.
发明人： Luigi Di Piro , Giuseppe Pasetti , Monica Schipani
IPC分类号： G01N27/12 , G01K7/20 , H03K17/60 , H03K17/687
CPC分类号： G01N27/122 , G01K7/20 , H03K17/60 , H03K17/6871
摘要： A circuit arrangement comprises a first branch comprising a resistor of variable resistance and a diode-connected bipolar transistor and a second branch comprising a resistor of fixed resistance and another diode-connected bipolar transistor. A control loop reproduces a voltage drop at the resistor of variable resistance to a voltage drop at the resistor of fixed resistance. Output terminals are connected to the bipolar transistors to supply a differential voltage. The circuit arrangement may be used as an analog frontend circuit in a gas sensor or a temperature sensor arrangement.
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公开(公告)号：US11855660B2
公开(公告)日：2023-12-26
申请号：US17294903
申请日：2019-11-26
申请人： Sciosense B.V.
摘要： In an embodiment, an ADC converter includes a first injection branch and a second injection branch, a first feedback branch and a second feedback branch, an integration node connected to the first and second injection branches and the first and second feedback branches, an integrator connected to the integration node and a comparator connected downstream of the integrator and configured to generate a comparator output signal to control the first and second feedback branches, wherein the first and second injection branches are configured to provide a charge injection dependent on a respective input quantity to the integration node, wherein the input quantity of the first injection branch is selected from a differential voltage signal, a capacitance dependent signal and a current dependent signal, wherein the input quantity of the second injection branch is selected from another one of the differential voltage signal, the capacitance dependent signal and the current dependent signal, and wherein the first and second feedback branches are configured to provide a feedback charge injection dependent on the comparator output signal to the integration node, the first and second feedback branches configured to receive one of a fixed voltage signal or a differential voltage signal.
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公开(公告)号：US20220004216A1
公开(公告)日：2022-01-06
申请号：US17287465
申请日：2019-09-26
申请人： Sciosense B.V.
摘要： In an embodiment an electric circuit arrangement includes a current generator circuit having a first output terminal and to generate an output current, a controller configured to generate control signals to control the current generator circuit, a random code generator configured to generate random codes and a counter configured to generate a count, wherein the current generator circuit comprises a plurality of output current paths and a plurality of controllable switching circuits, wherein each of the output current paths includes a respective electrical component to define a current in the respective output current path, wherein a respective one of the controllable switching circuits is coupled to a respective one of the output current paths to connect the respective electrical component to the first output terminal, wherein the random code generator is configured to provide a respective code derived from a respective one of the random codes, and wherein the controller is configured to use the respective derived code or the count depending on the derived code to generate a respective one of the control signals to control a respective one of the controllable switching circuits of the current generator circuit.
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