← 返回 JSSC 论文列表JSSC 2010第12期Digital Circuits0.18–0.5μm CMOSNeural Network Accelerator
A Micropower ChopperCDS Operational Amplifier Massimiliano Belloni Member IEEE E
提出了一种低功耗无杂散精密放大器，采用输入斩波和相关双采样技术。
168dB DC增益, 14.4μA总电流消耗, 2μV偏移电压标准差, 37nV/√Hz低频输入噪声密度
斩波技术CMOS模拟集成电路偏移消除运算放大器纹波减少
▸使用输入斩波和相关双采样进行解调
▸采用AC耦合消除第一级偏移且不引起纹波
▸输入轨到轨电路支持1.8V至5V供电
Abstract
ornasari , Member , IEEE, and
Franco Maloberti, Fellow, IEEE
Abstract—A low-power spur-free precision amplifier, which uses
input chopping and correlated double sampling for demodulation,
is presented. This circuit employs an AC coupling between the first
and the second stage that removes the first stage offset without
causing ripple. The input rail-to-rail circuit, fabricated in a mixed
0.18–0.5
m CMOS technology, operates with supply ranging from
1.8 V to 5 V. The circuit achieves a simulated 168