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

页码：226 / 235

页数：10

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