H03M 3/50
Digital/analogue converters using delta-sigma modulation as an intermediate step
Official title: {Digital/analogue converters using delta-sigma modulation as an intermediate step (digital delta-sigma modulators per se H03M7/3004)}
H03M3/50 (Digital/analogue converters using delta-sigma modulation as an intermediate step) appears on 768 US grants and 532 published applications in this corpus.
Search patents in H03M- Granted patents
- 768
- Published applications
- 532
- Assignees
- 298
- Inventors
- 1,186
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 12 | 0 |
| 1994 | 7 | 0 |
| 1995 | 8 | 0 |
| 1996 | 13 | 0 |
| 1997 | 14 | 0 |
| 1998 | 18 | 0 |
| 1999 | 13 | 0 |
| 2000 | 20 | 0 |
| 2001 | 18 | 2 |
| 2002 | 38 | 24 |
| 2003 | 20 | 23 |
| 2004 | 30 | 36 |
| 2005 | 37 | 21 |
| 2006 | 21 | 28 |
| 2007 | 31 | 33 |
| 2008 | 26 | 22 |
| 2009 | 28 | 21 |
| 2010 | 26 | 22 |
| 2011 | 23 | 22 |
| 2012 | 16 | 15 |
| 2013 | 22 | 14 |
| 2014 | 21 | 28 |
| 2015 | 39 | 30 |
| 2016 | 36 | 19 |
| 2017 | 36 | 24 |
| 2018 | 22 | 15 |
| 2019 | 24 | 23 |
| 2020 | 34 | 25 |
| 2021 | 24 | 14 |
| 2022 | 16 | 20 |
| 2023 | 15 | 16 |
| 2024 | 12 | 13 |
| 2025 | 14 | 10 |
| 2026 | 13 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Reducing non-linearity in a digital-to-time converter (DTC) when an input clock changes between lower and higher periods8 Sep 2026US 12,732,199 B2Ningbo Aura Semiconductor Co., Limited
- Delta-sigma modulators with downsampled digital integrators25 Aug 2026US 12,719,495 B2NXP B. V.
- Sigma-delta modulator and method for operating a sigma-delta modulator28 Jul 2026US 12,695,464 B2Robert Bosch GmbH
- Differential IDAC for PPG applications19 May 2026US 12,633,941 B2STMicroelectronics International N. V.
- High frequency, low power, N-path sigma-delta modulator28 Apr 2026US 12,615,058 B2Beyond Semiconductor, D.O.O.
- Delta-sigma sensing device8 Oct 2026US 2026/0312600 A1Consejo Superior De Investigaciones Cientificas (Csic)
- Noise-shaping sar-nested dsm for wide input signal range and input impedance boosting for bio-signal recording13 Aug 2026US 2026/0238225 A1Korea Advanced Institute of Science and Technology
- Incremental delta-sigma modulator23 Jul 2026US 2026/0213766 A1Asahi Kasei Microdevices Corporation
- Dynamic element matching for multi-bit digital-to-analog converter in continuous-time delta sigma modulators9 Jul 2026US 2026/0197013 A1NXP USA, Inc.
- High frequency, low power, n-path sigma-delta modulator2 Jul 2026US 2026/0189245 A1Beyond Semiconductor, D.O.O.
Most cited
By later US patents
- Analogue and digital convertors using pulse edge modulators with non-linearity error correction212US 5,548,286 AB & W Loudspeakers Limited · 1996
- Digital data converter166US 5,155,743 ANuance DesignWorks, Inc. · 1992
- Sigma-delta digital-to-analog converter with reduced noise163US 5,323,157 AMotorola, Inc. · 1994
- Analogue and digital convertors146US 6,232,899 B1Cirrus Logic, Inc. · 2001
- Current-to-voltage converter with controllable gain, and signal processing circuit comprising such a converter138US 6,545,620 B2Koninklijke Philips Electronics N. V. · 2003