Design of a Nanosecond Voltage Comparator with PECL Logic for a Photon-Counting Radiation Imaging System Application
In this paper, a nanosecond voltage comparator with PECL logic for a photon-counting radiation imaging system is presented. To realize a high-speed comparison of four gamma detector channels in a limited board space, quad comparators MAX9602 with PECL logic are chosen. Each of the four channels is c...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Hindawi Limited
2023-01-01
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| Series: | Science and Technology of Nuclear Installations |
| Online Access: | http://dx.doi.org/10.1155/2023/6810882 |
| _version_ | 1797779171062054912 |
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| author | Huaxia Zhang Yuewen Sun Zijia Chen Zhifang Wu |
| author_facet | Huaxia Zhang Yuewen Sun Zijia Chen Zhifang Wu |
| author_sort | Huaxia Zhang |
| collection | DOAJ |
| description | In this paper, a nanosecond voltage comparator with PECL logic for a photon-counting radiation imaging system is presented. To realize a high-speed comparison of four gamma detector channels in a limited board space, quad comparators MAX9602 with PECL logic are chosen. Each of the four channels is coupled with a PECL to CMOS converter ICS508, which exports CMOS logic data for later use in an FPGA. Simulated findings for cobalt-60 with intensities ranging from 30 Ci to 300 Ci show little count loss caused by using a comparator and indicate ideal propagation delays at all source intensities. While in the laboratory test using a PCB-level system, signals with pulse width less than 3 ns might be dropped, and dispersion of propagation delay occurs. Despite these, the performance is still satisfactory and can meet the requirements of practical applications, as demonstrated by an improved result of 0.9% in the contrast indicator model. Further studies to optimize the circuit design can be conducted to gain improvement. |
| first_indexed | 2024-03-12T23:27:48Z |
| format | Article |
| id | doaj.art-127b4a2ae00c44cf8c8bf3432af3d60d |
| institution | Directory Open Access Journal |
| issn | 1687-6083 |
| language | English |
| last_indexed | 2024-03-12T23:27:48Z |
| publishDate | 2023-01-01 |
| publisher | Hindawi Limited |
| record_format | Article |
| series | Science and Technology of Nuclear Installations |
| spelling | doaj.art-127b4a2ae00c44cf8c8bf3432af3d60d2023-07-16T00:00:00ZengHindawi LimitedScience and Technology of Nuclear Installations1687-60832023-01-01202310.1155/2023/6810882Design of a Nanosecond Voltage Comparator with PECL Logic for a Photon-Counting Radiation Imaging System ApplicationHuaxia Zhang0Yuewen Sun1Zijia Chen2Zhifang Wu3Institute of Nuclear Energy and New Energy TechnologyInstitute of Nuclear Energy and New Energy TechnologyInstitute of Nuclear Industry StandardizationInstitute of Nuclear Energy and New Energy TechnologyIn this paper, a nanosecond voltage comparator with PECL logic for a photon-counting radiation imaging system is presented. To realize a high-speed comparison of four gamma detector channels in a limited board space, quad comparators MAX9602 with PECL logic are chosen. Each of the four channels is coupled with a PECL to CMOS converter ICS508, which exports CMOS logic data for later use in an FPGA. Simulated findings for cobalt-60 with intensities ranging from 30 Ci to 300 Ci show little count loss caused by using a comparator and indicate ideal propagation delays at all source intensities. While in the laboratory test using a PCB-level system, signals with pulse width less than 3 ns might be dropped, and dispersion of propagation delay occurs. Despite these, the performance is still satisfactory and can meet the requirements of practical applications, as demonstrated by an improved result of 0.9% in the contrast indicator model. Further studies to optimize the circuit design can be conducted to gain improvement.http://dx.doi.org/10.1155/2023/6810882 |
| spellingShingle | Huaxia Zhang Yuewen Sun Zijia Chen Zhifang Wu Design of a Nanosecond Voltage Comparator with PECL Logic for a Photon-Counting Radiation Imaging System Application Science and Technology of Nuclear Installations |
| title | Design of a Nanosecond Voltage Comparator with PECL Logic for a Photon-Counting Radiation Imaging System Application |
| title_full | Design of a Nanosecond Voltage Comparator with PECL Logic for a Photon-Counting Radiation Imaging System Application |
| title_fullStr | Design of a Nanosecond Voltage Comparator with PECL Logic for a Photon-Counting Radiation Imaging System Application |
| title_full_unstemmed | Design of a Nanosecond Voltage Comparator with PECL Logic for a Photon-Counting Radiation Imaging System Application |
| title_short | Design of a Nanosecond Voltage Comparator with PECL Logic for a Photon-Counting Radiation Imaging System Application |
| title_sort | design of a nanosecond voltage comparator with pecl logic for a photon counting radiation imaging system application |
| url | http://dx.doi.org/10.1155/2023/6810882 |
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