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1. 发明授权

US06346802B2 Calibration circuit for a band-gap reference voltage 有权
标题翻译：带隙参考电压的校准电路
公开(公告)号：US06346802B2
公开(公告)日：2002-02-12
申请号：US09862651
申请日：2001-05-21
申请人： Ernesto Lasalandra , Nicola Bagnalasta
发明人： Ernesto Lasalandra , Nicola Bagnalasta
IPC分类号： G05F316
CPC分类号： G05F3/265
摘要： The present invention relates to a calibration circuit for a band-gap voltage comprising first and second transistors working at different current density, having the base electrodes connected to each other, a first resistance connecting the emitter electrodes of said first and second transistors, said first transistor having a second resistance in series with its emitter electrode, said first and second transistors being connected with a circuitry of transistors, configured as a mirror, characterized by comprising a current source, generating a current in function of the value present in a digital word, composed by “i” bit, connected by means of first and second switches to respective first and second circuit nodes so as to select in which node to insert the current and so as to select the necessary quantity of current to make the calibration.
摘要翻译：本发明涉及一种用于带隙电压的校准电路，包括以不同电流密度工作的第一和第二晶体管，其基极彼此连接，第一电阻连接所述第一和第二晶体管的发射极，所述第一晶体管具有与其发射极电极串联的第二电阻，所述第一和第二晶体管与被配置为反射镜的晶体管电路连接，其特征在于包括电流源，产生电流存在于数字字中的值由“i”位组成，通过第一和第二开关连接到相应的第一和第二电路节点，以选择哪个节点插入电流，并选择必要的电流量进行校准。

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