基于数字调节循环的超低功率无放大器电位元设计
IEEE transactions on biomedical circuits and systems
|March 3, 2025
概括
这项研究介绍了一种新的电位电位电路架构,用于电压电化学生物传感器,通过删除传统放大器来简化设计. 这一创新使得高效的电压调节和电流测量能够用于先进的生物传感应用.
科学领域:
- * 电气工程 电气工程
- * 生物医学工程 * 生物医学工程
- * 传感器技术 * 传感器技术
背景情况:
- * 电化学生物传感器的传统电位器通常需要复杂的电路,包括多个放大器和被动组件.
- *将电位器与生物传感器集成,需要高效,低功耗和高性能解决方案,以准确测量电流和控制电压.
- *现有的设计面临着面积,功耗和运行频率范围的限制.
研究的目的:
- *为电压计电化学生物传感器提供一个新的电位元电路架构.
- *以展示一个基于数字低掉电调节器 (DLDO) 结构的简化电位器设计.
- * 评估拟议的电位器不同配置的性能.
主要方法:
- * 开发了一种新型的电位器架构,利用数字低落电调节器 (DLDO) 结构.
- *采用计时比较器,数字循环过器和电流转向DAC实现了电位器.
- *设计和制造了三种配置 (SSR,DSR,差分传感DSR) 在180nmCMOS过程中.
主要成果:
- * 拟议的电位器消除了对跨阻抗放大器 (TIA) 和控制放大器的需求.
- * 制设计占据了小的区域 (0.0645毫米2到0.266毫米2).
- *在广泛的频率范围 (100 Hz至100 MHz) 和电源电压范围 (1 V至1.8 V) 中实现了运行,DSR电位器只消耗3.7nW,并提供129.5dB的动态范围.
结论:
- *基于DLDO的新型电位器架构为电化学生物传感器接口提供了简化和高效的解决方案.
- * 制造的原型在耗电量,动态范围和操作灵活性方面表现出色.
- * 这种架构对推进便携式和集成生物传感系统具有重大潜力.
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