Single Commercially Available IC-Based Electronically Controllable Voltage-Mode First-Order Multifunction Filter with Complete Standard Functions and Low Output Impedance

This paper presents the design of a voltage-mode three-input single-output multifunction first-order filter employing commercially available LT1228 IC for easy verification of the proposed circuit by laboratory measurements. The proposed filter is very simple, consisting of a single LT1228 as an act...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Winai Jaikla, Unchittha Buakhong, Surapong Siripongdee, Fabian Khateb, Roman Sotner, Phamorn Silapan, Peerawut Suwanjan, Amornchai Chaichana
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	multifunction filter LT1228 electronic control voltage-mode first-order circuit phase shifted circuit Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/821edc6ee03f48c4b9d674494fcd4339
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:821edc6ee03f48c4b9d674494fcd4339
record_format	dspace
spelling	oai:doaj.org-article:821edc6ee03f48c4b9d674494fcd43392021-11-11T19:18:42ZSingle Commercially Available IC-Based Electronically Controllable Voltage-Mode First-Order Multifunction Filter with Complete Standard Functions and Low Output Impedance10.3390/s212173761424-8220https://doaj.org/article/821edc6ee03f48c4b9d674494fcd43392021-11-01T00:00:00Zhttps://www.mdpi.com/1424-8220/21/21/7376https://doaj.org/toc/1424-8220This paper presents the design of a voltage-mode three-input single-output multifunction first-order filter employing commercially available LT1228 IC for easy verification of the proposed circuit by laboratory measurements. The proposed filter is very simple, consisting of a single LT1228 as an active device with two resistors and one capacitor. The output voltage node is low impedance, resulting in an easy cascade-ability with other voltage-mode configurations. The proposed filter provides four filter responses: low-pass filter (LP), high-pass filter (HP), inverting all-pass filter (AP−), and non-inverting all-pass filter (AP+) in the same circuit configuration. The selection of output filter responses can be conducted without additional inverting or double gains, which is easy to be controlled by the digital method. The control of pole frequency and phase response can be conducted electronically through the bias current (<i>I<sub>B</sub></i>). The matching condition during tuning the phase response with constant voltage gain is not required. Moreover, the pass-band voltage gain of the LP and HP functions can be controlled by adjusting the value of resistors without affecting the pole frequency and phase response. Additionally, the phase responses of the AP filters can be selected as both lagging or leading phase responses. The parasitic effects on the filtering performances were also analyzed and studied. The performances of the proposed filter were simulated and experimented with a ±5 V voltage supply. For the AP+ experimental result, the leading phase response for 1 kHz to 1 MHz frequency changed from 180 to 0 degrees. For the AP− experimental result, the lagging phase response for 1 kHz to 1 MHz frequency changed from 0 to −180 degrees. The design of the quadrature oscillator based on the proposed first-order filter is also included as an application example.Winai JaiklaUnchittha BuakhongSurapong SiripongdeeFabian KhatebRoman SotnerPhamorn SilapanPeerawut SuwanjanAmornchai ChaichanaMDPI AGarticlemultifunction filterLT1228electronic controlvoltage-modefirst-order circuitphase shifted circuitChemical technologyTP1-1185ENSensors, Vol 21, Iss 7376, p 7376 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	multifunction filter LT1228 electronic control voltage-mode first-order circuit phase shifted circuit Chemical technology TP1-1185
spellingShingle	multifunction filter LT1228 electronic control voltage-mode first-order circuit phase shifted circuit Chemical technology TP1-1185 Winai Jaikla Unchittha Buakhong Surapong Siripongdee Fabian Khateb Roman Sotner Phamorn Silapan Peerawut Suwanjan Amornchai Chaichana Single Commercially Available IC-Based Electronically Controllable Voltage-Mode First-Order Multifunction Filter with Complete Standard Functions and Low Output Impedance
description	This paper presents the design of a voltage-mode three-input single-output multifunction first-order filter employing commercially available LT1228 IC for easy verification of the proposed circuit by laboratory measurements. The proposed filter is very simple, consisting of a single LT1228 as an active device with two resistors and one capacitor. The output voltage node is low impedance, resulting in an easy cascade-ability with other voltage-mode configurations. The proposed filter provides four filter responses: low-pass filter (LP), high-pass filter (HP), inverting all-pass filter (AP−), and non-inverting all-pass filter (AP+) in the same circuit configuration. The selection of output filter responses can be conducted without additional inverting or double gains, which is easy to be controlled by the digital method. The control of pole frequency and phase response can be conducted electronically through the bias current (<i>I<sub>B</sub></i>). The matching condition during tuning the phase response with constant voltage gain is not required. Moreover, the pass-band voltage gain of the LP and HP functions can be controlled by adjusting the value of resistors without affecting the pole frequency and phase response. Additionally, the phase responses of the AP filters can be selected as both lagging or leading phase responses. The parasitic effects on the filtering performances were also analyzed and studied. The performances of the proposed filter were simulated and experimented with a ±5 V voltage supply. For the AP+ experimental result, the leading phase response for 1 kHz to 1 MHz frequency changed from 180 to 0 degrees. For the AP− experimental result, the lagging phase response for 1 kHz to 1 MHz frequency changed from 0 to −180 degrees. The design of the quadrature oscillator based on the proposed first-order filter is also included as an application example.
format	article
author	Winai Jaikla Unchittha Buakhong Surapong Siripongdee Fabian Khateb Roman Sotner Phamorn Silapan Peerawut Suwanjan Amornchai Chaichana
author_facet	Winai Jaikla Unchittha Buakhong Surapong Siripongdee Fabian Khateb Roman Sotner Phamorn Silapan Peerawut Suwanjan Amornchai Chaichana
author_sort	Winai Jaikla
title	Single Commercially Available IC-Based Electronically Controllable Voltage-Mode First-Order Multifunction Filter with Complete Standard Functions and Low Output Impedance
title_short	Single Commercially Available IC-Based Electronically Controllable Voltage-Mode First-Order Multifunction Filter with Complete Standard Functions and Low Output Impedance
title_full	Single Commercially Available IC-Based Electronically Controllable Voltage-Mode First-Order Multifunction Filter with Complete Standard Functions and Low Output Impedance
title_fullStr	Single Commercially Available IC-Based Electronically Controllable Voltage-Mode First-Order Multifunction Filter with Complete Standard Functions and Low Output Impedance
title_full_unstemmed	Single Commercially Available IC-Based Electronically Controllable Voltage-Mode First-Order Multifunction Filter with Complete Standard Functions and Low Output Impedance
title_sort	single commercially available ic-based electronically controllable voltage-mode first-order multifunction filter with complete standard functions and low output impedance
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/821edc6ee03f48c4b9d674494fcd4339
work_keys_str_mv	AT winaijaikla singlecommerciallyavailableicbasedelectronicallycontrollablevoltagemodefirstordermultifunctionfilterwithcompletestandardfunctionsandlowoutputimpedance AT unchitthabuakhong singlecommerciallyavailableicbasedelectronicallycontrollablevoltagemodefirstordermultifunctionfilterwithcompletestandardfunctionsandlowoutputimpedance AT surapongsiripongdee singlecommerciallyavailableicbasedelectronicallycontrollablevoltagemodefirstordermultifunctionfilterwithcompletestandardfunctionsandlowoutputimpedance AT fabiankhateb singlecommerciallyavailableicbasedelectronicallycontrollablevoltagemodefirstordermultifunctionfilterwithcompletestandardfunctionsandlowoutputimpedance AT romansotner singlecommerciallyavailableicbasedelectronicallycontrollablevoltagemodefirstordermultifunctionfilterwithcompletestandardfunctionsandlowoutputimpedance AT phamornsilapan singlecommerciallyavailableicbasedelectronicallycontrollablevoltagemodefirstordermultifunctionfilterwithcompletestandardfunctionsandlowoutputimpedance AT peerawutsuwanjan singlecommerciallyavailableicbasedelectronicallycontrollablevoltagemodefirstordermultifunctionfilterwithcompletestandardfunctionsandlowoutputimpedance AT amornchaichaichana singlecommerciallyavailableicbasedelectronicallycontrollablevoltagemodefirstordermultifunctionfilterwithcompletestandardfunctionsandlowoutputimpedance
_version_	1718431594967990272

Single Commercially Available IC-Based Electronically Controllable Voltage-Mode First-Order Multifunction Filter with Complete Standard Functions and Low Output Impedance

Ejemplares similares