H03F 3/45121
Folded cascode stages
Official title: {Folded cascode stages}
H03F3/45121 (Folded cascode stages) appears on 26 US grants and 5 published applications in this corpus.
Search patents in H03F- Granted patents
- 26
- Published applications
- 5
- Assignees
- 15
- Inventors
- 31
- Latest grant
- 7 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 2 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 2 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Differential amplifier and a data driving device7 Jan 2025US 12,191,829 B2Lx Semicon Co., Ltd.
- Multipath programmable gain instrumentation amplifier frontend3 Oct 2023US 11,777,463 B2Texas Instruments Incorporated
- High performance folded cascode current source with dual mirrors current feedback24 Nov 2020US 10,848,113 B2
- Self-biased operational amplifier21 Jul 2009US 7,564,308 B1National Semiconductor Corporation
- Method to control the output common mode in a differential OPAMP with rail-to-rail input stage12 May 2009US 7,532,072 B1Linear Technology Corporation
- Buffer circuit having enhanced slew rate19 Sep 2024US 2024/0313705 A1Magnachip Mixed-Signal, Ltd.
- Differential amplifier and a data driving device2 May 2024US 2024/0146263 A1Lx Semicon Co., Ltd.
- Multipath programmable gain instrumentation amplifier frontend22 Dec 2022US 2022/0407483 A1Texas Instruments Incorporated
- High performance folded cascode current source with dual mirrors current feedback18 Apr 2019US 2019/0115884 A1
- Apparatus and method for affecting operation of a signal treating device23 Aug 2007US 2007/0194851 A1Texas Instruments Incorporated
Most cited
By later US patents
- Differential amplifier with rail-to-rail input capability and controlled transconductance84US 4,555,673 ASignetics Corporation · 1985
- Method and circuit for trimming an operational amplifier having dual input stages36US 5,610,557 ALinear Technology Corporation · 1997
- Rail-to-rail input stages with constant g.sub.m and constant common-mode output currents31US 5,734,297 APhilips Electronics North America Corporation · 1998
- Differential amplifier circuit with rail-to-rail capability26US 4,532,479 ASignetics Corporation · 1985
- Fully differential line driver circuit having common-mode feedback23US 5,381,112 AMotorola, Inc. · 1995