Digitally Programmable Fully Differential Filter
In this paper a new digitally programmable voltage mode fully differential Kerwin-Huelsman-Newcomb(KHN) filter is realized using digitally controlled CMOS fully balanced output transconductor (DCBOTA). The realized filter uses five DCBOTAs, a single resistor and two capacitors. The filter provides low-p...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Spolecnost pro radioelektronicke inzenyrstvi
2011-12-01
|
| Series: | Radioengineering |
| Subjects: | |
| Online Access: | http://www.radioeng.cz/fulltexts/2011/11_04_917_925.pdf |
| _version_ | 1828431334158106624 |
|---|---|
| author | S. Maheshwari M. A. Siddiqi I. A. Khan P. Beg |
| author_facet | S. Maheshwari M. A. Siddiqi I. A. Khan P. Beg |
| author_sort | S. Maheshwari |
| collection | DOAJ |
| description | In this paper a new digitally programmable voltage mode fully differential Kerwin-Huelsman-Newcomb(KHN) filter is realized using digitally controlled CMOS fully balanced output transconductor (DCBOTA). The realized filter uses five DCBOTAs, a single resistor and two capacitors. The filter provides low-pass, high-pass and band-pass responses simultaneously. The pole-frequency of all the responses is controlled by externally applying an 8- bit digital control word. All the responses exhibit independent digital control for pole-ω0 and pole-Q. The proposed filter also offers low passive sensitivities. Non-ideal gain and parasitic associated with the actual DCBOTA is also discussed. The CMMR results for low-pass response are also included which highlight the advantage of a fully-differential operation. Exhaustive PSPICE simulation is carried out using 0.5µ technology which may be further scaled to explore state-of-the-art applications of the proposed circuit. |
| first_indexed | 2024-12-10T18:01:45Z |
| format | Article |
| id | doaj.art-dc07e51e794e45d8b400fc0ecf48fbb9 |
| institution | Directory Open Access Journal |
| issn | 1210-2512 |
| language | English |
| last_indexed | 2024-12-10T18:01:45Z |
| publishDate | 2011-12-01 |
| publisher | Spolecnost pro radioelektronicke inzenyrstvi |
| record_format | Article |
| series | Radioengineering |
| spelling | doaj.art-dc07e51e794e45d8b400fc0ecf48fbb92022-12-22T01:38:45ZengSpolecnost pro radioelektronicke inzenyrstviRadioengineering1210-25122011-12-01204917925Digitally Programmable Fully Differential FilterS. MaheshwariM. A. SiddiqiI. A. KhanP. BegIn this paper a new digitally programmable voltage mode fully differential Kerwin-Huelsman-Newcomb(KHN) filter is realized using digitally controlled CMOS fully balanced output transconductor (DCBOTA). The realized filter uses five DCBOTAs, a single resistor and two capacitors. The filter provides low-pass, high-pass and band-pass responses simultaneously. The pole-frequency of all the responses is controlled by externally applying an 8- bit digital control word. All the responses exhibit independent digital control for pole-ω0 and pole-Q. The proposed filter also offers low passive sensitivities. Non-ideal gain and parasitic associated with the actual DCBOTA is also discussed. The CMMR results for low-pass response are also included which highlight the advantage of a fully-differential operation. Exhaustive PSPICE simulation is carried out using 0.5µ technology which may be further scaled to explore state-of-the-art applications of the proposed circuit.www.radioeng.cz/fulltexts/2011/11_04_917_925.pdfFully differentialdigital controlKHN filter |
| spellingShingle | S. Maheshwari M. A. Siddiqi I. A. Khan P. Beg Digitally Programmable Fully Differential Filter Radioengineering Fully differential digital control KHN filter |
| title | Digitally Programmable Fully Differential Filter |
| title_full | Digitally Programmable Fully Differential Filter |
| title_fullStr | Digitally Programmable Fully Differential Filter |
| title_full_unstemmed | Digitally Programmable Fully Differential Filter |
| title_short | Digitally Programmable Fully Differential Filter |
| title_sort | digitally programmable fully differential filter |
| topic | Fully differential digital control KHN filter |
| url | http://www.radioeng.cz/fulltexts/2011/11_04_917_925.pdf |
| work_keys_str_mv | AT smaheshwari digitallyprogrammablefullydifferentialfilter AT masiddiqi digitallyprogrammablefullydifferentialfilter AT iakhan digitallyprogrammablefullydifferentialfilter AT pbeg digitallyprogrammablefullydifferentialfilter |