Calibration of a current source array
US7042374B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 21, 2005 |
| Grant date | May 9, 2006 |
| Priority date | — |
| Expiry date | Mar 21, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/742
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A current source cell includes a current source providing a first current where the first current can be calibrated, first and second switches coupled to steer the first current to respective first and second output terminals in response to respective first and second control signals, and a latch circuit generating the first and second control signals. The latch circuit drives the first and second control signals to a first logical state to cause the first and second switches to open. The first current is then calibrated. After calibration, the latch circuit drives the first and second control signals to have logical states that correspond to a data signal as triggered by a clock signal where the first and second control signals have inverse logical states. One of the first and second switches is closed to steer the first current to a respective one of the first and second output terminals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.