基本信息:
- 专利标题： ANALOGE FRONTENDARCHITEKTUR FÜR KAPAZITIVEN DRUCKSENSOR
- 专利标题（英）：ANALOG FRONTEND ARCHITECTURE FOR CAPACITIVE PRESSURE SENSOR
- 申请号：PCT/EP2021/085347 申请日：2021-12-13
- 公开(公告)号：WO2022148603A1 公开(公告)日：2022-07-14
- 发明人： MUSAZZI, Massimiliano , TANGREDI, Domenico , DAVID, Filippo , CAZZANIGA, Gabriele , SANTORO, Manuel Salvatore
- 申请人： ROBERT BOSCH GMBH
- 申请人地址： Postfach 30 02 20
- 专利权人： ROBERT BOSCH GMBH
- 当前专利权人： ROBERT BOSCH GMBH
- 当前专利权人地址： Postfach 30 02 20
- 优先权： DE10 2021 200 022.3 2021-01-05
- 主分类号： H03F3/70
- IPC分类号： H03F3/70 ; H03F3/72 ; H03F1/34 ; H03F3/45 ; G01L9/12 ; G01D5/24
The invention relates to an analog frontend architecture (100) for a capacitive pressure sensor (109) with a low-noise amplifier unit (101) for low-noise amplification of sensor signals of the capacitive pressure sensor (109), the low-noise amplifier unit (101) comprising a first integrator unit (103) and a second integrator unit (105) for integrating charges fed into input connections (INP, INN) of the low-noise amplifier unit (101) and for outputting integrated charges at output connections (OUT1, OUT2) of the low-noise amplifier unit (101), a feedback unit (107) and a start-up unit (108), the feedback unit (107) being designed to feed integrated charges from the integrator unit (105) back into the input connections (INP, INN) of the low-noise amplifier unit (101), and the start-up unit (108) being connectable between a first connection state and a second connection state and being designed in the first connection state to conduct the charges fed into the input connections (INP, INN) past the first integrator unit (103), into the second integrator unit (105) and from the second integrator unit (105) into the feedback unit (107), and in the second connection state to conduct the charges fed into the input connections (INP, INN) directly into the first integrator unit (103).