A Calibration Scheme for Stability of Self-biased Ring Amplifier

被引：0
|
作者：
Yan, Rongshen [1 ]
Chan, Chi-Hang [1 ]
Sin, Sai-Weng [1 ]
Seng-Pan, U. [1 ,2 ]
Martins, R. P. [1 ]
机构：
[1] Univ Macau, Fac Sci & Technol, Dept ECE, Macau, Peoples R China
[2] Synopsys Chipidea Microelect Macau Ltd, Macau, Peoples R China
来源：
2017 6TH INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND COMPUTER SCIENCE (ICAMCS 2017) | 2017年
关键词：
Calibration; Self-biased Ring Amplifier; PVT Variations; Oscillation Detection; Programmable Resistor; DELTA-SIGMA MODULATOR; LOW-POWER; COMPARATOR;
D O I：
10.23977/icames.2017.1029
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
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 degrees C to 85 degrees C at all corners.
引用
收藏
页码：226 / 235
页数：10
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