| US 7,579,892 B2 | ||
| Accurate timing generator and method therefor | ||
| Petr Kadanka, Valasska Bystrice (Czech Republic) | ||
| Assigned to Semiconductor Components Industries, L.L.C., Phoenix, Ariz. (US) | ||
| Filed on May 26, 2006, as Appl. No. 11/441,328. | ||
| Prior Publication US 2007/0273423 A1, Nov. 29, 2007 | ||
| Int. Cl. G06F 1/04 (2006.01) | ||
| U.S. Cl. 327—291 [327/299] | 16 Claims |
| 9. A timing generator comprising:
a first transistor having a first threshold voltage, a first current carrying electrode, and having a control electrode coupled
to a second current carrying electrode;
a voltage to current converter coupled to the second current carrying electrode of the first transistor, the voltage to current
converter configured to form a current that is representative of a voltage received from the first transistor;
a capacitor coupled to receive a charging current that is representative of the current from the voltage to current converter
and form a time dependent signal;
a second transistor formed to have a second threshold voltage that tracks the first threshold voltage, a first current carrying
electrode, a second current carrying electrode, and a control electrode coupled to receive the time dependent signal; and
a third transistor having a third threshold voltage, a control electrode coupled to receive a bias voltage, a first current
carrying electrode coupled to the second current carrying electrode of the first transistor, and a second current carrying
electrode coupled to receive an input voltage.
|