Switched Current Micropower 4th Order Lowpass / Highpass Filter

Gudmundur Bogason

Switched Current Micropower 4th Order Lowpass / Highpass Filter

Gudmundur Bogason

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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Abstract

This paper describes a 4th order lowpass / highpass Butterworth filter implemented in switched current technique. The filter has been designed for low power operation. A prototype implementation has been made and it operates with supply voltages down to 2V and with a total supply current of 211Â¿A at a sampling rate of 50kHz. The chip includes a clock-generator, three current-followers, sample-and-hold and two 4th order filters. The sampling frequency is restricted to approximately 50kHz and the ratio between sampling frequency and cutoff frequency is 12.5. The dynamic-range was found to be 49dB for the highpass section and 58dB for the lowpass section, with a peak signal current of 750nA. The area of the chip core is 1.33mm2.

Original language	English
Title of host publication	Proceedings of the Nineteenth European Solid-State Circuits Conference
Volume	Volume 1
Publisher	IEEE
Publication date	1993
Pages	170-173
ISBN (Print)	28-63-35134-X
Publication status	Published - 1993
Event	19th European Solid-State Circuits Conference - Sevilla, Spain Duration: 22 Sept 1993 → 24 Sept 1993 Conference number: 19 http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=5467852

Conference

Conference	19th European Solid-State Circuits Conference
Number	19
Country/Territory	Spain
City	Sevilla
Period	22/09/1993 → 24/09/1993
Internet address	http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=5467852

Bibliographical note

Copyright 1993 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

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@inproceedings{457b05adcde24559b2f50697cacbd1c9,

title = "Switched Current Micropower 4th Order Lowpass / Highpass Filter",

abstract = "This paper describes a 4th order lowpass / highpass Butterworth filter implemented in switched current technique. The filter has been designed for low power operation. A prototype implementation has been made and it operates with supply voltages down to 2V and with a total supply current of 211{\^A}¿A at a sampling rate of 50kHz. The chip includes a clock-generator, three current-followers, sample-and-hold and two 4th order filters. The sampling frequency is restricted to approximately 50kHz and the ratio between sampling frequency and cutoff frequency is 12.5. The dynamic-range was found to be 49dB for the highpass section and 58dB for the lowpass section, with a peak signal current of 750nA. The area of the chip core is 1.33mm2.",

author = "Gudmundur Bogason",

note = "Copyright 1993 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.; 19th European Solid-State Circuits Conference, ESSCIRC '93 ; Conference date: 22-09-1993 Through 24-09-1993",

year = "1993",

language = "English",

isbn = "28-63-35134-X",

volume = "Volume 1",

pages = "170--173",

booktitle = "Proceedings of the Nineteenth European Solid-State Circuits Conference",

publisher = "IEEE",

address = "United States",

url = "http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=5467852",

}

TY - GEN

T1 - Switched Current Micropower 4th Order Lowpass / Highpass Filter

AU - Bogason, Gudmundur

N1 - Conference code: 19

PY - 1993

Y1 - 1993

N2 - This paper describes a 4th order lowpass / highpass Butterworth filter implemented in switched current technique. The filter has been designed for low power operation. A prototype implementation has been made and it operates with supply voltages down to 2V and with a total supply current of 211Â¿A at a sampling rate of 50kHz. The chip includes a clock-generator, three current-followers, sample-and-hold and two 4th order filters. The sampling frequency is restricted to approximately 50kHz and the ratio between sampling frequency and cutoff frequency is 12.5. The dynamic-range was found to be 49dB for the highpass section and 58dB for the lowpass section, with a peak signal current of 750nA. The area of the chip core is 1.33mm2.

AB - This paper describes a 4th order lowpass / highpass Butterworth filter implemented in switched current technique. The filter has been designed for low power operation. A prototype implementation has been made and it operates with supply voltages down to 2V and with a total supply current of 211Â¿A at a sampling rate of 50kHz. The chip includes a clock-generator, three current-followers, sample-and-hold and two 4th order filters. The sampling frequency is restricted to approximately 50kHz and the ratio between sampling frequency and cutoff frequency is 12.5. The dynamic-range was found to be 49dB for the highpass section and 58dB for the lowpass section, with a peak signal current of 750nA. The area of the chip core is 1.33mm2.

M3 - Article in proceedings

SN - 28-63-35134-X

VL - Volume 1

SP - 170

EP - 173

BT - Proceedings of the Nineteenth European Solid-State Circuits Conference

PB - IEEE

T2 - 19th European Solid-State Circuits Conference

Y2 - 22 September 1993 through 24 September 1993

ER -

Switched Current Micropower 4th Order Lowpass / Highpass Filter

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