상세정보
등록 저전압 밴드갭 기준전압 발생기
- 출원번호
- 11945708 (2007.11.27)
- 공개번호
- 20080136504 (2008.06.12)
- 등록번호
- 7808305 (2010.10.05)
- 출원국
- 미국
- 협약과제
- 06MB1800, 초저전력 RF/HW/SW 통합 SoC, 현석봉
- 초록
- A low-voltage band-gap reference voltage bias circuit is provided. In the low-voltage band-gap reference voltage bias circuit, a proportional-to-absolute temperature (PTAT) current is copied to two nodes, respectively, to generate a first voltage having a negative slope with respect to temperature variation, and a second voltage having a positive slope with respect to temperature variation, and first and second elements having high impedances are serially connected to each other between the two nodes, such that the sum of the negative slope of the first voltage and the positive slope of the second voltage is zero and an average voltage between the two nodes is extracted to output the extracted result as a reference voltage. Accordingly, a stable reference voltage of 1V or lower regardless of a power supply voltage and temperature variation can be supplied.