A Calibration Scheme for Stability of Self-biased Ring Amplifier
This paper presents a calibration scheme to enhance the robustness of the Self-Biased Ring Amplifier(SBRA)under PVT variations.As the ring amplifier is developed based on a ring oscillator structure,it can easily oscillate under PVT variations.The proposed calibration method utilizes an Oscillation Detection Circuit(ODC)with a close loop control of a Programmable Resistor Array Circuit(PRAC)to adjust the dead-zone(stability region),thus stabilizing the SBRA.The introduced ODC and PRAC have little influence on the power efficiency as well as hardware overhead.Based on a 1.5 bit/stage Multiplying Digital to Analog Converter(MDAC)circuit setup,the simulation shows that the proposed method can stabilize the ring amplifier in the range of 0℃ to 85℃ at all corners.
Calibration Self-biased Ring Amplifier PVT Variations Oscillation Detection Programmable Resistor
Rongshen Yan Chi-Hang Chan Sai-Weng Sin Seng-Pan U R.P.Martins
Department of ECE,Faculty of Science and Technology,University of Macau,Macao,China Department of ECE,Faculty of Science and Technology,University of Macau,Macao,China;Also with Synops Department of ECE,Faculty of Science and Technology,University of Macau,Macao,China;On leave from In
国际会议
郑州
英文
1-10
2017-04-29（万方平台首次上网日期，不代表论文的发表时间）