| US 7,589,513 B2 | ||
| Reference voltage generator circuit | ||
| Ryu Ogiwara, Yokohama (Japan); and Daisaburo Takashima, Yokohama (Japan) | ||
| Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan) | ||
| Filed on Apr. 05, 2007, as Appl. No. 11/783,039. | ||
| Claims priority of application No. 2006-104077 (JP), filed on Apr. 05, 2006. | ||
| Prior Publication US 2007/0241736 A1, Oct. 18, 2007 | ||
| Int. Cl. G05F 3/16 (2006.01) | ||
| U.S. Cl. 323—314 [327/539; 323/316] | 11 Claims |
| 1. A reference voltage generator circuit, comprising:
a first current path formed between an input terminal supplied with a first reference voltage and an output terminal and including
a first diode and a first resistor serially connected from said input terminal;
a second current path formed between said input terminal and said output terminal and including a second diode, a second resistor
and a third resistor serially connected from said input terminal;
a first comparator supplied with a voltage on a first node between said first diode and said first resistor and a voltage
on a second node between said second resistor and said third resistor for comparative amplication; and
a transistor connected between said output terminal and a second reference voltage and having a control terminal to receive
an output from said first comparator.
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