发明名称 |
Circuit for generating a temperature-compensated voltage reference, in particular for applications with supply voltages lower than 1V |
摘要 |
An embodiment of a circuit is described for the generation of a temperature-compensated voltage reference of the type comprising at least one generator circuit of a band-gap voltage, inserted between a first and a second voltage reference and including an operational amplifier, having in turn a first and a second input terminal connected to an input stage connected to these first and second input terminal and comprising at least one pair of a first and a second bipolar transistor for the generation of a first voltage component proportional to the temperature. The circuit also comprises the control block connected to the generator circuit of a band-gap voltage in correspondence with at least one first control node which is supplied with a biasing voltage value comprising at least one voltage component which increases with the temperature for compensating the variations of the base-emitter voltage of the first and second bipolar transistors and ensure the turn-on of a pair of input transistors of the operational amplifier. The circuit has an output terminal suitable for supplying a temperature-compensated voltage value obtained by the sum of the first voltage component proportional to the temperature and of a second component inversely proportional to the temperature. |
申请公布号 |
US8120415(B2) |
申请公布日期 |
2012.02.21 |
申请号 |
US20090464481 |
申请日期 |
2009.05.12 |
申请人 |
CONTE ANTONINO;MICCICHE' MARIO;GRASSO ROSARIO ROBERTO;STMICROELECTRONICS S.R.L. |
发明人 |
CONTE ANTONINO;MICCICHE' MARIO;GRASSO ROSARIO ROBERTO |
分类号 |
G05F1/10;G05F3/02 |
主分类号 |
G05F1/10 |
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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