摘要
设计了一种新型超低功耗可控增益放大器,对其构成及工作原理进行分析。考虑到不同于常用的可控增益放大器,设计需要满足系统在恶劣环境下稳定运行;且系统超低功耗的要求。因此对可控增益放大器采用了休眠-唤醒机制、高线性度电阻衰减电路以及亚阈值电路设计方法;并通过搭建仿真平台对设计的可行性进行验证。仿真结果表明,接收器可在温度-40℃—125℃,电源电压2.3 V—5 V的环境下可靠工作,且在该工作范围内超低功率运行。
The paper designes a new ultra-low power auto gain control amplifier, and analysis the structure and working principle of it. Different form common auto gain control amplifier, this system need to remain stable work in harsh environments and work with ultra-low power consumption. Thus, we use wake-up module and decay resistance network with high linearity; moreover, most MOSFETs in all analog circuits are designed to work in sub-threshold region. And we demonstrate that the design is practicable by setting up simulation platform. The simulation result shows that, the presented receiver can operate in the environment of -40℃-125℃ temperature range and 2.3V-5V supply voltage range with ultra-low power consumption, and its operation is stable and reliable.
出处
《科学技术与工程》
北大核心
2013年第5期1301-1306,1310,共7页
Science Technology and Engineering
关键词
超低功耗
亚阈值
可控增益放大器
ultra-low power
sub-threshold
auto gain control amplifier
