Implementation of Low-Noise Switched-Capacitor Low-Pass Filter with Small Capacitance Spread

被引：2
|
作者：
Nicodimus, Retdian [1 ]
Takagi, Shigetaka [2 ]
机构：
[1] Tokyo Inst Technol, Global Edge Inst, Tokyo 1528552, Japan
[2] Tokyo Inst Technol, Dept Commun & Integrated Syst, Grad Sch Sci & Engn, Tokyo 1528552, Japan
来源：
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES | 2013年 / E96A卷 / 02期
关键词：
switched-capacitor circuits; SC filters; SC integrators; noise transfer function; GM-C FILTER; SENSITIVITY;
D O I：
10.1587/transfun.E96.A.477
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
A design methodology for implementation of low-noise switched-capacitor low-pass filter (SC LPF) with small capacitance spread is proposed. The proposed method is focused on the reduction of operational amplifier noise transfer gain at low frequencies and the reduction of total capacitance. A new SC LPF topology is proposed in order to adapt the correlated double sampling and charge scaling technique at the same time. Design examples show that proposed filter reduces the total capacitance by 65% or more compared to the conventional one without having significant increase in noise transfer gain.
引用
收藏
页码：477 / 485
页数：9
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