Design and Verification of a Charge Pump in Local Oscillator for 5G Applications
A charge pump (CP) that has low current mismatch to reduce the locking time of the Phase-Locked Loop (PLL) is proposed. The design is promising in 5G applications with the capabilities of fast settling and low power consumption. In this design, a charge pump architecture consists of an operational p...
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| Format: | Article |
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MDPI AG
2021-04-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/10/9/1009 |
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| author | Rui Guo Zhenghao Lu Shaogang Hu Qi Yu Limei Rong Yang Liu |
| author_facet | Rui Guo Zhenghao Lu Shaogang Hu Qi Yu Limei Rong Yang Liu |
| author_sort | Rui Guo |
| collection | DOAJ |
| description | A charge pump (CP) that has low current mismatch to reduce the locking time of the Phase-Locked Loop (PLL) is proposed. The design is promising in 5G applications with the capabilities of fast settling and low power consumption. In this design, a charge pump architecture consists of an operational power amplifier (OPA), switches, three D flip-flops (DFFs) and passive devices. A phase error compensation technique is introduced in the charge pump to reduce the locking time. The current mismatch, which is mainly due to the leakage current, is below 1% for a large output voltage headroom of 84% of the supply voltage. An 18.4% reduction in the settling time is realized by the proposed design. |
| first_indexed | 2024-03-10T12:03:03Z |
| format | Article |
| id | doaj.art-a3d6b65ebc774612ab54e1bd7f70f697 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-10T12:03:03Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-a3d6b65ebc774612ab54e1bd7f70f6972023-11-21T16:49:44ZengMDPI AGElectronics2079-92922021-04-01109100910.3390/electronics10091009Design and Verification of a Charge Pump in Local Oscillator for 5G ApplicationsRui Guo0Zhenghao Lu1Shaogang Hu2Qi Yu3Limei Rong4Yang Liu5State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, ChinaSchool of Electronic Engineering, Soochow University, Suzhou 215000, ChinaState Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, ChinaState Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, ChinaState Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, ChinaState Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, ChinaA charge pump (CP) that has low current mismatch to reduce the locking time of the Phase-Locked Loop (PLL) is proposed. The design is promising in 5G applications with the capabilities of fast settling and low power consumption. In this design, a charge pump architecture consists of an operational power amplifier (OPA), switches, three D flip-flops (DFFs) and passive devices. A phase error compensation technique is introduced in the charge pump to reduce the locking time. The current mismatch, which is mainly due to the leakage current, is below 1% for a large output voltage headroom of 84% of the supply voltage. An 18.4% reduction in the settling time is realized by the proposed design.https://www.mdpi.com/2079-9292/10/9/1009charge pumpPLLlocking time5G |
| spellingShingle | Rui Guo Zhenghao Lu Shaogang Hu Qi Yu Limei Rong Yang Liu Design and Verification of a Charge Pump in Local Oscillator for 5G Applications Electronics charge pump PLL locking time 5G |
| title | Design and Verification of a Charge Pump in Local Oscillator for 5G Applications |
| title_full | Design and Verification of a Charge Pump in Local Oscillator for 5G Applications |
| title_fullStr | Design and Verification of a Charge Pump in Local Oscillator for 5G Applications |
| title_full_unstemmed | Design and Verification of a Charge Pump in Local Oscillator for 5G Applications |
| title_short | Design and Verification of a Charge Pump in Local Oscillator for 5G Applications |
| title_sort | design and verification of a charge pump in local oscillator for 5g applications |
| topic | charge pump PLL locking time 5G |
| url | https://www.mdpi.com/2079-9292/10/9/1009 |
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