DE3213513C2 - - Google Patents
Info
- Publication number
- DE3213513C2 DE3213513C2 DE3213513A DE3213513A DE3213513C2 DE 3213513 C2 DE3213513 C2 DE 3213513C2 DE 3213513 A DE3213513 A DE 3213513A DE 3213513 A DE3213513 A DE 3213513A DE 3213513 C2 DE3213513 C2 DE 3213513C2
- Authority
- DE
- Germany
- Prior art keywords
- output
- filter
- input
- connection
- pass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000003990 capacitor Substances 0.000 claims description 20
- 238000010586 diagram Methods 0.000 description 12
- 238000013461 design Methods 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 230000001143 conditioned effect Effects 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/04—Frequency selective two-port networks
- H03H11/12—Frequency selective two-port networks using amplifiers with feedback
- H03H11/1217—Frequency selective two-port networks using amplifiers with feedback using a plurality of operational amplifiers
- H03H11/1252—Two integrator-loop-filters
Landscapes
- Networks Using Active Elements (AREA)
- Filters That Use Time-Delay Elements (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/253,233 US4417214A (en) | 1981-04-13 | 1981-04-13 | Monolithic IC general purpose active filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3213513A1 DE3213513A1 (de) | 1982-11-04 |
| DE3213513C2 true DE3213513C2 (en, 2012) | 1992-10-08 |
Family
ID=22959409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19823213513 Granted DE3213513A1 (de) | 1981-04-13 | 1982-04-10 | Universelles aktives filter |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US4417214A (en, 2012) |
| JP (1) | JPS57181222A (en, 2012) |
| DE (1) | DE3213513A1 (en, 2012) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19841677B4 (de) * | 1997-12-15 | 2013-05-02 | National Semiconductor Corp.(N.D.Ges.D.Staates Delaware) | Integrierte, aktive Intergrator-Filterschaltung |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3485242D1 (de) * | 1983-11-28 | 1991-12-12 | Pfleiderer Peter M Dipl Ing | Einrichtung zur kompensation von wiedergabefehlern eines elektroakustischen wandlers. |
| US4988952B1 (en) * | 1989-06-06 | 1995-10-31 | Linear Techn Inc | High q switched capacitor filter having internal thin-film resistors |
| US5440270A (en) * | 1992-07-14 | 1995-08-08 | Linear Technology Corporation | Linear-phase filter having high gain selectivity |
| US6271720B1 (en) | 1998-09-02 | 2001-08-07 | Linear Technology Corporation | Operational filter building block |
| US6271719B1 (en) | 1998-09-02 | 2001-08-07 | Linear Technology Corporation | Operational filter building block |
| US6344773B1 (en) | 2000-10-20 | 2002-02-05 | Linear Technology Corporation | Flexible monolithic continuous-time analog low-pass filter with minimal circuitry |
| US7495508B2 (en) * | 2007-03-12 | 2009-02-24 | Texas Instruments Incorporated | Switched capacitor notch filter circuits |
| GB2453099A (en) * | 2007-07-19 | 2009-04-01 | Univ Sussex | Sensor system with tunable narrow band filter. |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4306197A (en) * | 1979-12-17 | 1981-12-15 | American Microsystems, Inc. | Switched-capacitor elliptic filter |
-
1981
- 1981-04-13 US US06/253,233 patent/US4417214A/en not_active Expired - Lifetime
-
1982
- 1982-04-10 DE DE19823213513 patent/DE3213513A1/de active Granted
- 1982-04-12 JP JP57060826A patent/JPS57181222A/ja active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19841677B4 (de) * | 1997-12-15 | 2013-05-02 | National Semiconductor Corp.(N.D.Ges.D.Staates Delaware) | Integrierte, aktive Intergrator-Filterschaltung |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57181222A (en) | 1982-11-08 |
| JPH0322727B2 (en, 2012) | 1991-03-27 |
| DE3213513A1 (de) | 1982-11-04 |
| US4417214A (en) | 1983-11-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8328 | Change in the person/name/address of the agent |
Free format text: RICHTER, J., DIPL.-ING., 1000 BERLIN GERBAULET, H., DIPL.-ING., PAT.-ANWAELTE, 2000 HAMBURG |