Invention Grant
- Patent Title: Electronic device for a radiofrequency signal reception chain, comprising a low-noise transimpedance amplifier stage
- Patent Title (中): 一种用于射频信号接收链的电子设备，包括低噪声跨阻放大器级
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Application No.: US14734514Application Date: 2015-06-09
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Publication No.: US09413307B2Publication Date: 2016-08-09
- Inventor: Laurent Chabert
- Applicant: STMicroelectronics SA
- Applicant Address: FR Montrouge
- Assignee: STMicroelectronics SA
- Current Assignee: STMicroelectronics SA
- Current Assignee Address: FR Montrouge
- Agency: Gardere Wynne Sewell LLP
- Priority: FR1458865 20140919
- Main IPC: H03F3/45
- IPC: H03F3/45 ; H03F3/19 ; H03F1/02
Abstract:
An electronic device includes a transimpedance amplifier stage having an amplifier end stage of the class AB type and a preamplifier stage coupled between an output of a frequency transposition stage and an input of the amplifier end stage. A self-biased common-mode control stage is configured to bias the preamplifier stage. The preamplifier stage is formed by a differential amplifier with an active load that is biased in response to the self-biased common-mode control stage.
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