A LOW-VOLTAGE LOW-POWER CURRENT-MODE HIGH-PASS LEAPFROG FILTER

被引：4

作者：

SERDIJN, WA

机构：

[1] Department of Electrical Engineering, Electonics Research Laboratory, Delft University of Technology, CD Delft, 2628

来源：

ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING | 1993年 / 3卷 / 02期

关键词：

D O I：

10.1007/BF01239368

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

A low-power bipolar continuous-time low-frequency high-pass second-order Butterworth filter is presented that works in the current domain and operates from a single 1.3-V battery. The filter contains two adjustable integrators. These integrators are realized by means of a capacitance and an adjustable transconductance amplifier with an indirect output. The complete filter, including all capacitances needed, can be integrated in an ordinary full-custom IC process. A semicustom realization is shown. The filter demonstrates operation down to 1 V with less than 16 muW power consumption and a dynamic range of 50 dB. Its cutoff frequency can be exponentially tuned with a control current over a range from 100 Hz to 1 kHz.

引用

页码：105 / 112

页数：8

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