Temperature detection circuit and semiconductor device

Details Temperature detection circuit and semiconductor device Temperature detection circuit and semiconductor device

2007-08-01

2011-11-22

Caputo, Lisa (Department: 2855)

Thermal measuring and testing

Temperature measurement

By electrical or magnetic heat sensor

C374S178000

Reexamination Certificate

active

08061894

ABSTRACT:
To provide a temperature detection circuit and a semiconductor device capable of accurately detecting temperatures. A temperature detection circuit10includes a group of diodes11connected in series, a constant current source I1connected to the group of diodes11, a BGR circuit13, an amplifier14for amplifying the BGR voltage, an adder12for subtracting a comparison voltage VD generated by the group of diodes11from a reference voltage serving as an output of the amplifier14, a voltage current converter15for converting the output voltage of the adder12into the current, and a resistor R2for converting its output current into the voltage. The reference voltage VA2is a BGR voltage VBGR amplified by the same voltage as the comparison voltage VD at a predetermined temperature T1.

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