JSSC 2020第10期Other0.18µm

A 77-dB-DR 065-mW 20-MHz 5th-Order Coupled Source Followers Based Low-Pass Filte

提出一种基于耦合源跟随器的低功耗高线性度五阶低通滤波器。

0.18µm CMOS, 1.3V, 0.5mA, 20MHz带宽, 76.9dB动态范围

耦合源跟随器低通滤波器高线性度低功耗CMOS

▸采用耦合源跟随器（CSFs）实现紧凑型滤波器拓扑

▸单级结构合成三阶低通传递函数

▸可配置为二阶或五阶滤波器

Abstract

A compact coupled source followers (CSFs)-based low-pass ﬁlter (LPF) topology is presented with excellent power efﬁciency and high linearity. It synthesizes a 3 rd-order low-pass transfer function in a single stage that is comprised of two CSFs and three capacitors. It can also be conﬁgured to a 2 nd-order by disconnecting a capacitor. A 5 th-order LPF prototype is designed with a cascade of two proposed ﬁlter stages in a 0.18-µm CMOS process. Operating under a 1.3-V supply voltage, the ﬁlter co