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公开(公告)号：US12073860B2
公开(公告)日：2024-08-27
申请号：US18191639
申请日：2023-03-28
发明人： Dario Livornesi , Alessio Emanuele Vergani , Paolo Pulici , Francesco Piscitelli , Enrico Mammei , Mojtaba Mohammadi Abdevand , Piero Malcovati , Edoardo Bonizzoni
CPC分类号： G11B5/6029 , G11B5/607 , H03F1/0261
摘要： According to an embodiment, a circuit includes a biasing and a low-frequency recovery circuit. The biasing circuit includes a voltage digital to analog converter (V-DAC), a differential difference amplifier coupled to the V-DAC, a common-mode feedback (CMFB) amplifier coupled to the differential difference amplifier, and a first pair of transistors arranged as a high-impedance structure and coupled to the differential difference amplifier and the CMFB amplifier. The low-frequency recovery circuit includes a current digital to analog converter (C-DAC), a second pair of transistors arranged as a high-impedance structure and coupled to the first pair of transistors, a pair of resistors having a resistance value equal to half a resistance of the resistive sensor, the pair of resistors arranged between the second pair of transistors and coupled to the C-DAC, and a gain circuit coupled to shared nodes between the second pair of transistors and the pair of resistors.
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公开(公告)号：US20230386514A1
公开(公告)日：2023-11-30
申请号：US18191639
申请日：2023-03-28
发明人： Dario Livornesi , Alessio Emanuele Vergani , Paolo Pulici , Francesco Piscitelli , Enrico Mammei , Mojtaba Mohammadi Abdevand , Piero Malcovati , Edoardo Bonizzoni
CPC分类号： G11B5/6029 , G11B5/607 , H03F1/0261
摘要： According to an embodiment, a circuit includes a biasing and a low-frequency recovery circuit. The biasing circuit includes a voltage digital to analog converter (V-DAC), a differential difference amplifier coupled to the V-DAC, a common-mode feedback (CMFB) amplifier coupled to the differential difference amplifier, and a first pair of transistors arranged as a high-impedance structure and coupled to the differential difference amplifier and the CMFB amplifier. The low-frequency recovery circuit includes a current digital to analog converter (C-DAC), a second pair of transistors arranged as a high-impedance structure and coupled to the first pair of transistors, a pair of resistors having a resistance value equal to half a resistance of the resistive sensor, the pair of resistors arranged between the second pair of transistors and coupled to the C-DAC, and a gain circuit coupled to shared nodes between the second pair of transistors and the pair of resistors.
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