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2. 发明授权

US06836160B2 Modified Brokaw cell-based circuit for generating output current that varies linearly with temperature 失效
标题翻译：用于产生随温度线性变化的输出电流的改进的Brokaw电池电路
公开(公告)号：US06836160B2
公开(公告)日：2004-12-28
申请号：US10299376
申请日：2002-11-19
申请人： Xuening Li
发明人： Xuening Li
IPC分类号： G05F330
CPC分类号： G05F3/265
摘要： A modified Brokaw cell-based circuit produces a current which varies linearly with temperature. The collector-emitter current flow path of a diode-connected transistor is connected in series with the PTAT current produced by a control transistor. The base of the control transistor receives a control voltage whose value defines a limited range of variation of output current with temperature. The output transistor is coupled to an input port of a current mirror, which mirrors the linear collector current from the output transistor. The current through the output transistor is controlled by a composite of a CTAT base-emitter voltage of the diode-connected transistor and a PTAT voltage across a resistor, so that the output transistor produces an output current having a linear temperature coefficient.
摘要翻译：改进的Brokaw电池电路产生随温度线性变化的电流。二极管连接的晶体管的集电极 - 发射极电流流路与由控制晶体管产生的PTAT电流串联。控制晶体管的基极接收其值定义输出电流随温度变化的有限范围的控制电压。输出晶体管耦合到电流镜的输入端口，其反射来自输出晶体管的线性集电极电流。通过输出晶体管的电流由二极管连接的晶体管的CTAT基极 - 发射极电压与电阻之间的PTAT电压的复合控制，使得输出晶体管产生具有线性温度系数的输出电流。

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