Chopper-stabilized programmable gain amplifier
US-11165398-B2 · Nov 2, 2021 · US
using opamps as driving stages
using opamps as driving stages · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H03F3/303 |
| Official title | {using opamps as driving stages} |
| Display label | using opamps as driving stages |
| Total patents | 141 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 6 |
| 2017 | 8 |
| 2018 | 10 |
| 2019 | 8 |
| 2020 | 17 |
| 2021 | 11 |
| 2022 | 21 |
| 2023 | 22 |
| 2024 | 16 |
| 2025 | 11 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hybrid analog-to-digital converter with inverter-based residue amplifier
US-2021266001-A1 · Aug 26, 2021 · US
Bandwidth enhanced amplifier for high frequency CML to CMOS conversion
US-11043948-B1 · Jun 22, 2021 · US
Power amplifier module and power amplification method
US-2021126600-A1 · Apr 29, 2021 · US
Rectifying circuit
US-2021104952-A1 · Apr 8, 2021 · US
Amplifer biasing techniques
US-2021075370-A1 · Mar 11, 2021 · US
Circuit providing reverse current protection for high-side driver
US-2020412121-A1 · Dec 31, 2020 · US
Output stage circuit, operational amplifier, and signal amplifying method capable of suppressing variation of output signal
US-2020373893-A1 · Nov 26, 2020 · US
Demodulator/detector for digital isolators
US-10840960-B1 · Nov 17, 2020 · US
Lower-skew receiver circuit with rf immunity for controller area network (can)
US-2020350879-A1 · Nov 5, 2020 · US
Amplifier circuit with overshoot suppression
US-2020350868-A1 · Nov 5, 2020 · US
Common mode overload recovery for amplifier
US-10826443-B2 · Nov 3, 2020 · US
Operational amplifier and control method thereof
US-10819291-B2 · Oct 27, 2020 · US
Circuit providing reverse current protection for high-side driver
US-10804691-B2 · Oct 13, 2020 · US
Current integrator and related signal processing system
US-10804865-B1 · Oct 13, 2020 · US
Amplifier circuit with overshoot suppression
US-10771016-B2 · Sep 8, 2020 · US
Touch sensing device and display apparatus including the same
US-2020210020-A1 · Jul 2, 2020 · US
Output circuit and data driver of liquid crystal display device
US-10650770-B2 · May 12, 2020 · US
Chopper-stabilized programmable gain amplifier
US-2020136578-A1 · Apr 30, 2020 · US
Common mode overload recovery for amplifier
US-2020136570-A1 · Apr 30, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H03F3/303?
- CPC H03F3/303 is the Cooperative Patent Classification code for “using opamps as driving stages.”
- How many patents are filed under CPC H03F3/303 (using opamps as driving stages)?
- Our database includes 141 publications tagged with this CPC code.
- Is patent activity under CPC H03F3/303 growing?
- Publication counts under this code: 16 in 2024 vs 11 in 2025 (latest complete years).