Chopper stabilized bias unit element with binary weighted charge transfer capacitors
US11687738B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2021 |
| Grant date | Jun 27, 2023 |
| Priority date | — |
| Expiry date | Jun 10, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A Bias Unit Element (UE) has a digital input, a sign input, and a chop clock. The sign input is exclusive ORed with the chop clock to generate a signed chop clock. Each Bias UE comprises a positive Bias UE and a negative Bias UE, each comprising groups of NAND gates generating an output and a complementary output, each of which are coupled to differential charge transfer lines through binary weighted charge transfer capacitors to a differential charge transfer bus comprising a positive charge transfer line and a negative charge transfer line. The chopped sign input enables the positive Bias UE when the sign bit is positive and enables the negative Bias UE when the sign bit is negative.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.