Contactless integrated circuit comprising a charge pump
US5982647A · kind A · utility
8Cited by
13References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1999 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Jan 26, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C5/142
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An integrated circuit (30) for non-contact operation by means of at least one coil (L) forming a tuned resonant circuit with a tuning capacitor (C.sub.A), including a charge pump (10) with two clock inputs (E.sub.1 E.sub.2), wherein the clock inputs (E.sub.1 E.sub.2) of the charge pump (10) are constantly connected to the terminals of the coil (L), at least during the periods of non-contact operation of the integrated circuit, whereby the charge pump, seen from the clock inputs thereof, is a constant component of the tuning capacitor of the tuned resonant circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.