| US 7,518,406 B2 | ||
| Current supply circuit, ring oscillator, nonvolatile semiconductor device and electronic card and electronic device | ||
| Katsuaki Isobe, Yokohama (Japan) | ||
| Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan) | ||
| Filed on Feb. 01, 2007, as Appl. No. 11/670,174. | ||
| Application 11/670174 is a division of application No. 10/930801, filed on Sep. 01, 2004, granted, now 7,190,234. | ||
| Claims priority of application No. 2003-310271 (JP), filed on Sep. 02, 2003. | ||
| Prior Publication US 2007/0146010 A1, Jun. 28, 2007 | ||
| Int. Cl. H03K 19/094 (2006.01) | ||
| U.S. Cl. 326—83 [327/108] | 9 Claims |
| 1. A current supply circuit comprising:
a first circuit configured to generate a first current having a positive dependence with respect to a power supply voltage,
the first circuit comprising a first circuit section including a first resistor one terminal of which is connected to the
power supply voltage and through which a first-section current flows, a second circuit section including a second resistor
one terminal of which is connected to a reference voltage and through which a second-section current flows, and a third circuit
section which adds the first-section current and the second-section current to generate said first current having the positive
dependence with respect to the power supply voltage;
a second circuit configured to generate a second current greater than the first current; and
a third circuit configured to subtract the first current from the second current to generate a third current having a negative
dependence with respect to the power supply voltage.
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