Invention Grant
US08350206B2 Transimpedance amplifier circuit for converting an input current to an output voltage such circuits used for the evalutation of output signals of photo detectors, which are generating a current that is proportional to the intensity of received light 有权
用于将输入电流转换为输出电压的互阻抗放大器电路,所述电路用于对光电检测器的输出信号进行评估,所述电路产生与接收光强度成比例的电流

  • Patent Title: Transimpedance amplifier circuit for converting an input current to an output voltage such circuits used for the evalutation of output signals of photo detectors, which are generating a current that is proportional to the intensity of received light
  • Patent Title (中): 用于将输入电流转换为输出电压的互阻抗放大器电路,所述电路用于对光电检测器的输出信号进行评估,所述电路产生与接收光强度成比例的电流
  • Application No.: US12673631
    Application Date: 2008-08-14
  • Publication No.: US08350206B2
    Publication Date: 2013-01-08
  • Inventor: Reto Stutz
  • Applicant: Reto Stutz
  • Applicant Address: CH Heerbrugg
  • Assignee: Leica Geosystems AG
  • Current Assignee: Leica Geosystems AG
  • Current Assignee Address: CH Heerbrugg
  • Agency: Maschoff Gilmore & Israelsen
  • Priority: EP07114572 20070817
  • International Application: PCT/EP2008/060707 WO 20080814
  • International Announcement: WO2009/024536 WO 20090226
  • Main IPC: H03F3/08
  • IPC: H03F3/08
Transimpedance amplifier circuit for converting an input current to an output voltage such circuits used for the evalutation of output signals of photo detectors, which are generating a current that is proportional to the intensity of received light
Abstract:
The invention relates to a transimpedance amplifier circuit for converting an input current into an output voltage Uout−, comprising an amplifier element (4) having at least one signal input and an output having the output voltage Uout. For this purpose, the transimpedance amplifier circuit has a T-shaped feedback network divided into at least a first branch (1), a second branch (2) and a third branch (3), which is connected in series with the first branch (1), thus producing a node (K). The first branch (1) has a non-reactive resistance (R1) and is connected to the output at one end and the node (K) at the other end. The second branch (2) has at least one capacitance C2 and is connected to the node (K) at one end and in particular to an earth at the other end, and the third branch (3) has at least one capacitance C3 and is connected to the node (K) at one end and to the signal input at the other end. As a result, a capacitive current division is effected at the node (K).
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