Gm-C滤波器具有自动校准方案

2016 IEEE 19th International Symposium on Design and Diagnostics of Electronic Circuits & Systems (DDECS) Pub Date : 2016-04-20 DOI:10.1109/DDECS.2016.7482471

Hong-Yi Huang, Kun-Yuan Chen, Jia-Hao Xie, Ming-Ta Lee, Hao-Chiao Hong, Kuo-Hsing Cheng

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引用次数: 3

摘要

本文提出了一种应用椭圆低通滤波器和复合滤波器技术的五阶OTA-C带通滤波器。通过将无源元件与芯片上的运算跨导放大器集成，可引起由工艺变化引起的滤波器频率误差。带有自动校准方案的滤波电路可以减少频率对过程、电压和温度变化的依赖。采用0.18 um的1P6M CMOS工艺实现了测试芯片的布局。布局后仿真结果表明，该带通滤波器的中心频率为450 kHz，动态范围为35 dB，总功耗为0.14mW。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Gm-C filter with automatic calibration scheme

This work presents a fifth-order OTA-C band-pass filter applying Elliptic low-pass filter and complex filter techniques. The frequency error of the filter due to the effect of process variations is induced by integrating the passive components with the operational transconductance amplifier on chip. A filter circuit with automatic calibration scheme can make the frequency less dependent on process, voltage, and temperature variations. The layout of a test chip is realized using a 0.18 um 1P6M CMOS process. Post-layout simulation demonstrates that the center frequency of the band pass filter is 450 kHz and the dynamic range is 35 dB, It has a total power consumption of 0.14mW.

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来源期刊

2016 IEEE 19th International Symposium on Design and Diagnostics of Electronic Circuits & Systems (DDECS)

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