CN207281634U - A kind of signal processing circuit for being used for ns grades of laser pulses - Google Patents
A kind of signal processing circuit for being used for ns grades of laser pulses Download PDFInfo
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- CN207281634U CN207281634U CN201720734289.9U CN201720734289U CN207281634U CN 207281634 U CN207281634 U CN 207281634U CN 201720734289 U CN201720734289 U CN 201720734289U CN 207281634 U CN207281634 U CN 207281634U
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- laser pulses
- signal processing
- amplifying circuit
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 230000005611 electricity Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 230000003321 amplification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
A kind of signal processing circuit for being used for ns grades of laser pulses disclosed in the utility model, including：Photodetector, I V conversion circuits, main amplifying circuit, peak holding circuit and comparator circuit, the photodetector is connected by I V conversion circuits with main amplifying circuit input terminal, and main amplifying circuit output terminal is connected by peak holding circuit with comparator circuit.Wherein the weak current signal of photodetector is converted to ns grades of laser pulse signal by I V conversion circuits, ns grades of laser pulse signals are amplified by main amplifying circuit comprising two-stage amplifying circuit, peak holding circuit is by amplified pulse signal from ns grades of broadenings to us grades, not tractable weak current signal is converted to the us level digital signals directly gathered for most of process chips using analog signal processing circuit by the utility model, while the pulsewidth of the digital pulse signal of output can be adjusted by the adjusting to comparator circuit reference voltage.
Description
Technical field
Photodetection field is the utility model is related to, more particularly to a kind of signal processing electricity for being used for ns grades of laser pulses
Road.
Background technology
In photodetection field, photodetector is most common device, its internal two pole of semiconductor for reverse bias
Pipe, by receiving the pulse of laser reflection, weak current signal is produced through opto-electronic conversion.Because the laser that photodetector receives
Generally the pulsewidth of burst pulse is ns magnitudes, and subsequent process circuit is difficult to the amplitude for capturing pulse, is applicable in so needing to design
In the signal processing circuit of ns grades of laser pulses.Laser pulse processing is simulation letter by common laser pulse signal process circuit
Number, analog signal is acquired by high-speed AD.
Utility model content
The purpose of this utility model is to provide a kind of signal processing circuit for being used for ns grades of laser pulses.
For achieving the above object, the technical solution adopted in the utility model is：
A kind of signal processing circuit for being used for ns grades of laser pulses, including：Photodetector, I-V conversion circuits, main amplification
Circuit, peak holding circuit and comparator circuit, photodetector pass through I-V conversion circuits and main amplifying circuit input terminal phase
Even, main amplifying circuit output terminal is connected by peak holding circuit with comparator circuit.
A kind of signal processing circuit for being used for ns grades of laser pulses, the model operational amplifier of the I-V conversion circuits
ADA4896, for the weak current signal of photodetector to be converted to ns grades of laser pulse signal.
A kind of signal processing circuit for being used for ns grades of laser pulses, the main amplifying circuit include two-stage amplifying circuit, main
Amplifying circuit model operational amplifier A DA4896, for ns grades of laser pulse signals to be amplified.
A kind of signal processing circuit for being used for ns grades of laser pulses, the peak holding circuit model OPA615, is used for
By amplified pulse signal from ns grades of broadenings to us grades.
A kind of signal processing circuit for being used for ns grades of laser pulses, the comparator circuit model comparator
ADCMP600, for converting analog signals into digital pulse signal.
The utility model has the technical effect that：
A kind of signal processing circuit for being used for ns grades of laser pulses, be by ns grades of laser pulse signals be converted to us grades for
The digital signal of control circuit acquisition process so that control circuit can be gathered and handled.Whole circuit is simple, efficient,
The processing of narrow pulse signal is completed, and whole circuit can realize miniaturization, have larger actual application value.
Brief description of the drawings
Fig. 1 is the circuit block diagram of the utility model；
Fig. 2 is I-V conversion circuit principle schematics；
Fig. 3 is main amplifying circuit principle schematic.
Fig. 4 is peak holding circuit principle schematic.
Fig. 5 is comparator circuit principle schematic.
Embodiment
Below by instantiation, the utility model is described in further detail：
As shown in Fig. 1,2,3,4,5, a kind of signal processing circuit for being used for ns grades of laser pulses, including：Photodetector,
I-V conversion circuits, main amplifying circuit, peak holding circuit and comparator circuit, photodetector pass through I-V conversion circuits and master
Input amplifier is connected, and main amplifying circuit output terminal is connected by peak holding circuit with comparator circuit.
The functional block diagram of the utility model, referring to Fig. 1, the I-V conversion circuits believe the weak current of photodetector
Ns grades of laser pulse signal number is converted to, main amplifying circuit is put ns grades of laser pulse signals comprising two-stage amplifying circuit
Greatly, peak holding circuit changes analog signal through comparator circuit by amplified pulse signal from ns grades of broadenings to us grades
For digital pulse signal.
Fig. 2 is the principle schematic of I-V conversion circuits, main amplifying circuit and peak holding circuit and comparator circuit.I-V
Conversion circuit and main amplifying circuit use low noise, rail-to-rail output, the high speed voltage feedback type amplifier ADA4896 of ADI,
The chip quiescent current is 3mA, bandwidth 230MHz.Resistance（R1）Current signal is converted into voltage signal, capacitance（C1）For
Phase compensation capacitance.
Fig. 3 uses two-stage negative feedback amplifier circuit for main amplifying circuit, and amplification factor can be according to actual conditions by resistance
（R2）And resistance（R3）Adjustment.
Fig. 4 uses operational transconductance amplifier OPA615 for peak holding circuit, which is eased up by operational transconductance amplifier
SOTA, high-speed switch SW and the operational transconductance amplifier OTA of device composition are rushed, peak holding circuit can be realized by monolithic chip,
The length of retention time can be by holding capacitor（C28）Size adjust.
Fig. 5 use high-speed comparator ADCMP600 for comparator circuit, by adjusting threshold voltage REF parameter to exporting
Digital signal width be adjusted.
In conclusion ns grades of laser pulse signals are converted to us grades for control circuit acquisition process by the utility model
The whole circuit of digital signal is simple, efficient, completes the processing of narrow pulse signal, and can realize electricity using small package component
Road minimizes, and has larger actual application value.
Claims (5)
- A kind of 1. signal processing circuit for being used for ns grades of laser pulses, it is characterised in that：Including：Photodetector, I-V conversion electricity Road, main amplifying circuit, peak holding circuit and comparator circuit, photodetector pass through I-V conversion circuits and main amplifying circuit Input terminal is connected, and main amplifying circuit output terminal is connected by peak holding circuit with comparator circuit.
- A kind of 2. signal processing circuit for being used for ns grades of laser pulses according to claim 1, it is characterised in that：The I- The model operational amplifier A DA4896 of V conversion circuits, for by the weak current signal of photodetector be converted to ns grades swash Light pulse signal.
- A kind of 3. signal processing circuit for being used for ns grades of laser pulses according to claim 1, it is characterised in that：The master Amplifying circuit includes two-stage amplifying circuit, main amplifying circuit model operational amplifier A DA4896, for by ns grades of laser pulses Signal is amplified.
- A kind of 4. signal processing circuit for being used for ns grades of laser pulses according to claim 1, it is characterised in that：The peak Be worth holding circuit model OPA615, for by amplified pulse signal from ns grades of broadenings to us grades.
- A kind of 5. signal processing circuit for being used for ns grades of laser pulses according to claim 1, it is characterised in that：The ratio Compared with device circuit model comparator ADCMP600, for converting analog signals into digital pulse signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720734289.9U CN207281634U (en) | 2017-11-29 | 2017-11-29 | A kind of signal processing circuit for being used for ns grades of laser pulses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720734289.9U CN207281634U (en) | 2017-11-29 | 2017-11-29 | A kind of signal processing circuit for being used for ns grades of laser pulses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207281634U true CN207281634U (en) | 2018-04-27 |
Family
ID=61992959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720734289.9U Active CN207281634U (en) | 2017-11-29 | 2017-11-29 | A kind of signal processing circuit for being used for ns grades of laser pulses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207281634U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440780A (en) * | 2019-06-21 | 2019-11-12 | 西安德讯威光电测控技术有限公司 | A kind of big bandwidth, miniaturization laser gyro preamplifier |
-
2017
- 2017-11-29 CN CN201720734289.9U patent/CN207281634U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440780A (en) * | 2019-06-21 | 2019-11-12 | 西安德讯威光电测控技术有限公司 | A kind of big bandwidth, miniaturization laser gyro preamplifier |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 471000 China (Henan) Pilot Free Trade Zone Luoyang Area (High tech) Zhongdian Optics Valley (Luoyang) Digital Economy Industrial Park, Building 3, Building B, Floors 1-5 Patentee after: Henan Ruiji Intelligent Equipment Technology Co.,Ltd. Country or region after: China Address before: Room 078, 12th Floor, VIA Building, No. 29 Suzhou Street, Haidian District, Beijing 100080 Patentee before: BEIJING CLOUDTEK TECHNOLOGY CO.,LTD. Country or region before: China |