H03F 3/45699
Measuring at the input circuit of the differential amplifier
Official title: {Measuring at the input circuit of the differential amplifier}
H03F3/45699 (Measuring at the input circuit of the differential amplifier) appears on 138 US grants and 78 published applications in this corpus.
Search patents in H03F- Granted patents
- 138
- Published applications
- 78
- Assignees
- 88
- Inventors
- 199
- Latest grant
- 2 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 6 | 0 |
| 1995 | 5 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 6 | 0 |
| 2001 | 6 | 2 |
| 2002 | 8 | 11 |
| 2003 | 13 | 5 |
| 2004 | 3 | 2 |
| 2005 | 6 | 7 |
| 2006 | 4 | 2 |
| 2007 | 5 | 3 |
| 2008 | 4 | 3 |
| 2009 | 3 | 5 |
| 2010 | 3 | 0 |
| 2011 | 1 | 1 |
| 2012 | 2 | 3 |
| 2013 | 3 | 2 |
| 2014 | 1 | 1 |
| 2015 | 2 | 4 |
| 2016 | 6 | 2 |
| 2017 | 3 | 1 |
| 2018 | 1 | 3 |
| 2019 | 4 | 4 |
| 2020 | 6 | 4 |
| 2021 | 4 | 4 |
| 2022 | 5 | 2 |
| 2023 | 0 | 4 |
| 2024 | 3 | 0 |
| 2025 | 2 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H03F 3/45708Controlling the common source circuit of the differential amplifier74
- H03F 3/45717Controlling the loading circuit of the differential amplifier41
- H03F 3/45713Controlling the active amplifying circuit of the differential amplifier23
- H03F 3/45704Controlling the input circuit of the differential amplifier18
Recent patents
- Differential signal amplification circuit, digital isolator, and digital receiver2 Sep 2025US 12,407,300 B2Suzhou Novosense Microelectronics Co., Ltd.
- Common mode transient suppression4 Mar 2025US 12,244,277 B2Allegro MicroSystems, LLC
- Transconductor circuitry with adaptive biasing19 Nov 2024US 12,149,219 B2Ams AG
- Operational amplifier and electronic system3 Sep 2024US 12,081,175 B2Hangzhou Geo-chip Technology Co., Ltd.
- Baseline wander compensator and method25 Jun 2024US 12,021,543 B2MACOM Technology Solutions Holdings, Inc.
- Self-biased low leakage unity gain analog buffer11 Jun 2026US 2026/0163532 A1NXP USA, Inc.
- Fully differential quadrature driver30 Oct 2025US 2025/0337377 A1STMicroelectronics International N. V.
- Common mode transient suppression22 May 2025US 2025/0167745 A1Allegro MicroSystems, LLC
- Baseline wander compensator and method14 Dec 2023US 2023/0403023 A1MACOM Technology Solution Holdings, Inc.
- Operational amplifier and electronic system23 Nov 2023US 2023/0378916 A1Hangzhou Geo-chip Technology Co., Ltd.
Most cited
By later US patents
- Operational amplifier apparatus211US 5,777,515 AMatsushita Electric Industrial Co., Ltd. · 1998
- Differential amplifier with rail-to-rail input capability and controlled transconductance84US 4,555,673 ASignetics Corporation · 1985
- Combination driver-summing circuit for rail-to-rail differential amplifier71US 5,311,145 ANorth American Philips Corporation · 1994
- Differential input circuit and operational amplifier with wide common mode input voltage range69US 5,280,199 AKabushiki Kaisha Toshiba · 1994
- Line receiver circuit with large common mode range for differential input signals61US 6,236,242 B1Telefonaktiebolaget LM Ericsson (publ) · 2001