| US 7,514,706 B2 | ||
| Voltage reference circuit using programmable metallization cells | ||
| Nad Edward Gilbert, Higley, Ariz. (US) | ||
| Assigned to Adesto Technologies, Sunnyvale, Calif. (US) | ||
| Filed on Oct. 16, 2006, as Appl. No. 11/549,964. | ||
| Claims priority of provisional application 60/726905, filed on Oct. 14, 2005. | ||
| Prior Publication US 2007/0115749 A1, May 24, 2007 | ||
| Int. Cl. G11C 11/00 (2006.01) | ||
| U.S. Cl. 257—3 [365/148; 365/158] | 11 Claims |
| 1. A method of operating a programmable variable resistance cell voltage reference, said method comprising:
forcing a programming current into a programmable variable resistance cell for a predetermined period of time, wherein the
programming current instigates a change of resistance in the programmable variable resistance cell;
causing the programming current in the programmable variable resistance cell to produce a reduced current and to stop programming
after said predetermined programming period; and
buffering the resulting voltage across the programmable variable resistance cell with a voltage amplifier,
wherein the resulting voltage across the programmable variable resistance cell is the difference between the potentials of
the first terminal and the second terminal of said programmable variable resistance cell.
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