An oscillator circuit with cross charge and discharge by off-chip capacitors
CMOS Ring Oscillator has many advantages such as small layout area, large frequency range and easy integration. It is widely used in the DC-DC buck converter and electronic communication systems. On the basis of the traditional ring oscillator circuit, an independent charge and discharge control pat...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
National Computer System Engineering Research Institute of China
2023-03-01
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| Series: | Dianzi Jishu Yingyong |
| Subjects: | |
| Online Access: | http://www.chinaaet.com/article/3000160089 |
| _version_ | 1797448177781047296 |
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| author | Cao Yang Cao Zhenji Cao Liang Zhao Guilin |
| author_facet | Cao Yang Cao Zhenji Cao Liang Zhao Guilin |
| author_sort | Cao Yang |
| collection | DOAJ |
| description | CMOS Ring Oscillator has many advantages such as small layout area, large frequency range and easy integration. It is widely used in the DC-DC buck converter and electronic communication systems. On the basis of the traditional ring oscillator circuit, an independent charge and discharge control path is designed to realize a cross charge and discharge ring oscillator circuit, and a lower frequency oscillation period is obtained by externally connecting an off-chip capacitor. Based on 0.18 μm process, the circuit has been simulated with HSIM tool. After the back-end physical implementation, the layout of the oscillation occupies an area of 172 μm×76 μm. Using tools to extract parasitic parameters from the layout and conduct post-simulation, the simulation results indicates that with externally connecting an off-chip capacitor, and the power supply voltage in 3.3 V and temperature in 25℃, the oscillator has a clock period of 1.2 ms. With the power supply voltage changes in 2.7 V~5.5 V and temperature changes in -55℃~125℃, the frequency deviation is 5.83%.The circuit has been successfully applied in a power management chip. |
| first_indexed | 2024-03-09T14:06:42Z |
| format | Article |
| id | doaj.art-39831156674b44de944dad6cf0de8fec |
| institution | Directory Open Access Journal |
| issn | 0258-7998 |
| language | zho |
| last_indexed | 2024-03-09T14:06:42Z |
| publishDate | 2023-03-01 |
| publisher | National Computer System Engineering Research Institute of China |
| record_format | Article |
| series | Dianzi Jishu Yingyong |
| spelling | doaj.art-39831156674b44de944dad6cf0de8fec2023-11-30T03:43:54ZzhoNational Computer System Engineering Research Institute of ChinaDianzi Jishu Yingyong0258-79982023-03-01493778110.16157/j.issn.0258-7998.2230293000160089An oscillator circuit with cross charge and discharge by off-chip capacitorsCao Yang0Cao Zhenji1Cao Liang2Zhao Guilin3(The 58th Research Institute， China Electronics Technology Group Corp.， Wuxi 214035， China)(The 58th Research Institute， China Electronics Technology Group Corp.， Wuxi 214035， China)(The 58th Research Institute， China Electronics Technology Group Corp.， Wuxi 214035， China)(The 58th Research Institute， China Electronics Technology Group Corp.， Wuxi 214035， China)CMOS Ring Oscillator has many advantages such as small layout area, large frequency range and easy integration. It is widely used in the DC-DC buck converter and electronic communication systems. On the basis of the traditional ring oscillator circuit, an independent charge and discharge control path is designed to realize a cross charge and discharge ring oscillator circuit, and a lower frequency oscillation period is obtained by externally connecting an off-chip capacitor. Based on 0.18 μm process, the circuit has been simulated with HSIM tool. After the back-end physical implementation, the layout of the oscillation occupies an area of 172 μm×76 μm. Using tools to extract parasitic parameters from the layout and conduct post-simulation, the simulation results indicates that with externally connecting an off-chip capacitor, and the power supply voltage in 3.3 V and temperature in 25℃, the oscillator has a clock period of 1.2 ms. With the power supply voltage changes in 2.7 V~5.5 V and temperature changes in -55℃~125℃, the frequency deviation is 5.83%.The circuit has been successfully applied in a power management chip.http://www.chinaaet.com/article/3000160089 ring oscillatorcharge and discharge of capacitorpower management chipclock |
| spellingShingle | Cao Yang Cao Zhenji Cao Liang Zhao Guilin An oscillator circuit with cross charge and discharge by off-chip capacitors Dianzi Jishu Yingyong ring oscillator charge and discharge of capacitor power management chip clock |
| title | An oscillator circuit with cross charge and discharge by off-chip capacitors |
| title_full | An oscillator circuit with cross charge and discharge by off-chip capacitors |
| title_fullStr | An oscillator circuit with cross charge and discharge by off-chip capacitors |
| title_full_unstemmed | An oscillator circuit with cross charge and discharge by off-chip capacitors |
| title_short | An oscillator circuit with cross charge and discharge by off-chip capacitors |
| title_sort | oscillator circuit with cross charge and discharge by off chip capacitors |
| topic | ring oscillator charge and discharge of capacitor power management chip clock |
| url | http://www.chinaaet.com/article/3000160089 |
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