Temperature detecting circuit
    2.
    发明申请
    Temperature detecting circuit 审中-公开
    温度检测电路

    公开(公告)号:US20060197581A1

    公开(公告)日:2006-09-07

    申请号:US11370273

    申请日:2006-03-06

    IPC分类号: H01L35/00

    CPC分类号: G01K7/01 G01K2215/00

    摘要: A high precision temperature detecting circuit is disclosed. The temperature detecting circuit includes a first voltage source circuit for generating a voltage VPN that has a negative temperature coefficient using a work function difference of gate electrodes of two field effect transistors, a second voltage source circuit for generating a reference voltage VREF1 that is independent of temperature change using a work function difference of gate electrodes of two or more field effect transistors, an impedance conversion circuit for converting impedance of the voltage VPN and the reference voltage VREF1, and a subtracter circuit, to which the impedance converted voltages VPN and VREF1 are provided, for obtaining a difference voltage between the voltage VPN and the reference voltage VREF1, and for amplifying the difference voltage.

    摘要翻译: 公开了一种高精度温度检测电路。 温度检测电路包括:第一电压源电路,用于使用两个场效应晶体管的栅电极的功函数差产生具有负温度系数的电压VPN;第二电压源电路,用于产生独立的参考电压VREF 1 使用两个或更多个场效应晶体管的栅电极的功函数差,用于转换电压VPN和参考电压VREF 1的阻抗的阻抗转换电路,以及减法电路,阻抗转换电压VPN和 提供VREF1,用于获得电压VPN和参考电压VREF 1之间的差分电压,并用于放大差分电压。