Systems and methods for calibrating impedance of a low power voltage-mode transmitter driver
US10855254B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2019 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | Jan 31, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/04
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Systems for calibrating impedances caused by a first component and a second component of a voltage-mode transmitter driver are described herein. The first component includes a first transistor and a first resistor connected to the first transistor, wherein the first component is connected to a voltage source and an output end of the voltage-mode transmitter driver, respectively. The second component includes a second transistor and a second resistor connected to the second transistor, wherein the second component is connected to the output end of the voltage-mode transmitter driver, and a third transistor, respectively. A first gate of the third transistor is applied with a first tunable gate voltage, and the first tunable gate voltage is configured to be tuned to calibrate a first impedance between the output end and a ground to match with a second impedance between the voltage source and the output end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.