Reconfigurable trans-impedance amplifier with large linear dynamic range and high bandwidth
A technology of transimpedance amplifier and dynamic range, which is applied in amplifiers, improved amplifiers to expand bandwidth, improved amplifiers to improve efficiency, etc., can solve the problems of high static power consumption and difficulty in ensuring circuit stability, and achieve large linear dynamic range, The effect of high bandwidth and low power consumption
Active Publication Date: 2020-09-04
西安电子科技大学芜湖研究院 +1
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Problems solved by technology
[0004]
However, the dynamic range improvement method based on the gain switching method is usually difficult to ensure the stability of the circuit, and in order to meet the high current drive capability, the static power consumption is often relatively high
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Embodiment 1
[0033] To increase the linear dynamic range and bandwidth of transimpedance amplifiers and reduce their power consumption, see figure 1 , figure 1 It is a circuit topology diagram of a large linear dynamic range high bandwidth reconfigurable transimpedance amplifier provided by the embodiment of the present invention. This embodiment proposes a large linear dynamic range high bandwidth reconfigurable transimpedance amplifier. Dynamic range high bandwidth reconfigurable transimpedance amplifiers include:
[0034] Reconfigurable amplifier unit 100, gain switching unit 200 and output driver unit 300, wherein,
[0035] Gain switching unit 200, connected to signal input terminal I IN , for switching the gain of the input signal according to the first switch signal, the second switch signal, and the third switch signal;
[0036] Reconfigurable amplifier unit 100, connected to signal input terminal I IN , for adaptively adjusting the input signal according to the second switch si...
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The invention discloses a reconfigurable trans-impedance amplifier with a large linear dynamic range and high bandwidth which comprises a reconfigurable amplifier unit, a gain switching unit, and an output driving unit, wherein the gain switching unit is used for carrying out gain switching on an input signal according to a first switching signal, a second switching signal and a third switching signal; the reconfigurable amplifier unit is used for carrying out adaptive adjustment on the input signal according to the second switching signal and the third switching signal; and the output drivingunit is used for further driving the outputs of the reconfigurable amplifier unit and the gain switching unit and outputting the outputs from a signal output end. According to the novel trans-impedance amplifier structure, through the gain switching by the gain switching unit and the adaptive circuit topological structure of the reconfigurable amplifier unit, the stability adjusting capability under different gain states is provided, the high bandwidth output capability is provided, and the large linear dynamic range, the high bandwidth and the low power consumption of the trans-impedance amplifier are realized through a single structure.
Description
technical field [0001] The invention belongs to the technical field of laser radar optical signal receiver systems, and in particular relates to a reconfigurable transimpedance amplifier with large linear dynamic range and high bandwidth. Background technique [0002] With the development of science and technology, people's life scenes are becoming more and more automated and intelligent, and intelligent unmanned control devices continue to appear. Radar, as the eyes of robots, can help robots obtain information about the surrounding environment, such as obstacle positioning, distance detection, and Being able to guide the robot to move on its own and avoid obstacles actively is the basis and prerequisite for the robot to realize advanced intelligent behavior. Therefore, radar has a very important market value in the field of intelligent robots and unmanned driving. [0003] At present, the most detection equipment equipped with unmanned control equipment is a sensor networ...
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IPC IPC(8): H03F1/02H03F1/42H03F1/32G01S7/4913
CPCH03F1/0205H03F1/42H03F1/3205H03F1/3223G01S7/4913Y02D30/70
Inventor 朱樟明王夏宇马瑞黄子轩
Owner 西安电子科技大学芜湖研究院