发明名称 |
BANDGAP VOLTAGE REFERENCE CIRCUITRY |
摘要 |
Bandgap voltage reference circuitry capable of operating at very low power supply voltages is disclosed. The current source for driving the core bandgap voltage reference is implemented with insulated gate field effect transistors (M12, M15) having low threshold voltages. Voltage clamp circuitry (M21, M22, M24) protects the transistors from power supply voltage variations rising above a predetermined clamp voltage. An output amplifier with output biasing circuitry having a circuit structure similar to that of the core bandgap voltage reference ensures that the bandgap reaches the intended steady state of operation. |
申请公布号 |
WO2012097170(A2) |
申请公布日期 |
2012.07.19 |
申请号 |
WO2012US21105 |
申请日期 |
2012.01.12 |
申请人 |
TEXAS INSTRUMENTS INCORPORATED;TEXAS INSTRUMENTS JAPAN LIMITED;VU, LUAN;LUCERO, ELROY |
发明人 |
VU, LUAN;LUCERO, ELROY |
分类号 |
G05F3/02;G05F3/24;G05F3/26 |
主分类号 |
G05F3/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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