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A Gated Quenching Circuit with Wide Current Input Range

A technology of input range and current, applied in the circuit field, to achieve the effects of increasing anti-interference ability, reducing trigger difficulty, and reducing relative charging time

Active Publication Date: 2018-06-26
NORTH ELECTRON RES INST ANHUI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the existing technical problems, the present invention provides a gated quenching circuit based on a dual-threshold comparator to adapt to trigger current signals with a large dynamic range

Method used

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  • A Gated Quenching Circuit with Wide Current Input Range
  • A Gated Quenching Circuit with Wide Current Input Range

Examples

Experimental program
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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0025] Each pixel unit of the large area array lidar includes a readout circuit unit and a corresponding SPAD detector unit. Wherein, the readout circuit unit is composed of a quenching circuit and a timing circuit. The anode of the SPAD is connected to the quenching circuit through the indium column Indiumbump, the cathode of the SPAD is externally connected to the reverse bias voltage VB, and the output STOP of the quenching circuit is the timing stop sign of the timing circuit.

[0026] Quenching circuit of the present invention such as figure 1 shown.

[0027] Quenching circuit composition:

[0028] (1) MOS tube M2 is a charging tube, and MOS tube M1 is a quenching tube.

[0029] (2) MO...

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PUM

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Abstract

The invention discloses a gate control quenching circuit of a wide current input range. The circuit comprises a charging pipe MOS pipe M2, a quenching pipe MOS pipe M1, a voltage comparator formed by MOS pipes M3, M4, M5, M6 and M7 and current sources I0 and 10I0, and a control shaping circuit formed by MOS pipes M8, M9, M10, M11, M12 and M13. The gate control quenching circuit based on a double-threshold comparator can adapt to a trigger current signal of a large dynamic range, can increase an anti-interference capability and can reduce relative charging time.

Description

technical field [0001] The invention relates to a quenching circuit, which belongs to the technical field of circuits. Background technique [0002] Lidar is an active detection technology that can accurately and quickly obtain three-dimensional space information on the ground or the atmosphere. It can be used for ranging and angle measurement, so it has been widely used in military and civilian fields. [0003] Imaging lidar is divided into several working modes. For example, scanning imaging using unit detectors and non-scanning imaging using array detectors. The scanning imaging distance of the unit detector can be very far, but the imaging rate will be limited to a certain extent; the non-scanning imaging lidar using the traditional large area array detector is based on the principle of linear APD (Avalanche PhotoDiode), which can Imaging at a high rate, but requires a high-power laser to illuminate the target, so the working distance will not be too far. [0004] Whe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J1/44
CPCG01J1/44G01J2001/442G01J2001/4466
Inventor 白涛刘小淮
Owner NORTH ELECTRON RES INST ANHUI CO LTD