发明名称 |
Current generator and method of operating |
摘要 |
A current generator includes an op-amp having a negative terminal arranged to be coupled to an input voltage, a resistance selection circuit having at least one tunable resistor connected with each other, and at least one power transistor. A gate of the at least one power transistor is coupled to an output of the op-amp, and a drain of the at least one power transistor is coupled to the at least one tunable resistor or a load. The resistance selection circuit is configured to select a node of the at least one tunable resistor based on the input voltage for coupling from a positive terminal of the op-amp. The at least one tunable resistor is configured to adjust a resistance setting to control a current level of the current generator based on a power supply voltage or a current of a reference resistor. |
申请公布号 |
US8610421(B2) |
申请公布日期 |
2013.12.17 |
申请号 |
US20100976504 |
申请日期 |
2010.12.22 |
申请人 |
HUANG MING-CHIEH;CHERN CHAN-HONG;LIN CHIH-CHANG;TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD. |
发明人 |
HUANG MING-CHIEH;CHERN CHAN-HONG;LIN CHIH-CHANG |
分类号 |
G05F1/648 |
主分类号 |
G05F1/648 |
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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