A 0.5V, pico-watt, 0.06%/V / 0.03%/V low supply sensitive current/voltage reference without using amplifiers and resistors

A 0.5V, pico-watt, 0.06%/V / 0.03%/V low supply sensitive current/voltage reference without using amplifiers and resistors
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DOI：
10.1109/iscas46773.2023.10181479
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发表时间：
2023-05
期刊：
2023 IEEE International Symposium on Circuits and Systems (ISCAS)
影响因子：
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通讯作者：
Bhartipudi Sahishnavi;Sampath Kumar;Ashfakh Ali;Arnab Dey;Inhee Lee;Zia Abbas
Bhartipudi Sahishnavi;Sampath Kumar;Ashfakh Ali;Arnab Dey;Inhee Lee;Zia Abbas
中科院分区：
其他
文献类型：
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作者：
Bhartipudi Sahishnavi;Sampath Kumar;Ashfakh Ali;Arnab Dey;Inhee Lee;Zia Abbas

文献摘要

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针对超低功耗物联网和生物医学应用，提出了一种0.5V电源、基于栅漏的电流/电压基准。参考是通过适当地添加PTAT和CTAT曲线而产生的，而PTAT和CTAT曲线是通过利用Beta乘数的传统架构并利用身体偏置效应而获得的。栅漏晶体管取代了电阻，以确保低功耗和低面积。该电路不涉及任何运算放大器，避免了这些电路中突出的偏置问题。该电流(电压)基准采用CMOS90 nm工艺实现，在-55^{\CIRC}\MATHOM{C}$至$75^{\CIRC}\MATHTM{C}$的宽广温度范围内，典型精度为$34.6\TEXT{ppm}/{}^^{\CIRC}\MATHOM{C}(29.68\TEXT{ppm}/{}^{\CIRC}\MATHOM{C})，典型值为63.32pA(0.35V)。在0.5V-2.3V的电源范围内，基准电压和基准电流的线灵敏度分别为0.0318%N和0.0576%N。整个电路面积为0.0096mm2，功耗为415pW，电源电压为0.5V，成本为27加元。
The paper presents a 0.5V supply, gate leakage-based current/voltage reference for ultra-low power IoT and biomedical applications. The references are generated by the proper addition of PTAT and CTAT curves, which are obtained by exploiting the traditional architecture of the beta multiplier and using the body biasing effect. Gate leakage transistors replace the resistors to ensure low power and low area. The circuit doesn't involve any Op-Amps avoiding the issues of offset that are prominent in these circuits. Implemented in CMOS 90nm technology, the proposed current (voltage) reference achieves a typical accuracy of $34.6\text{ppm} /{ }^{\circ} \mathrm{C}(29.68 \text{ppm} /{ }^{\circ} \mathrm{C})$ over a wide temperature range of $-55^{\circ} \mathrm{C}$ to $75^{\circ}\mathrm{C}$ with typical value 63.32pA(0.35V). Excellent line sensitivity of 0.0318%N and 0.0576%N are observed for voltage and current reference, respectively, in a supply range of 0.5V - 2.3V. The area occupied by the total circuit is 0.0096mm2, while the power consumption is 415pW at the typical corner of $27^{\circ}C$ and 0.5V supply.