| 摘要 |
PROBLEM TO BE SOLVED: To provide a reference voltage generating circuit that employs a new resistor, indicating a stabler resistor value with respect to changes in the temperature of the environment, thereby outputting the reference voltage Vref of stabler values to temperature changes. SOLUTION: In the reference voltage generating circuit, including a resistive dividing circuit containing, a plurality of resistors connected in series, wherein the reference voltage generating circuit is particularly a reference voltage generating circuit of type that countervails the mutual positive and negative temperature coefficients, by combining circuits having the positive and negative temperature coefficients to the changes in temperature of the environment; and particularly, it is as the resistance dividing circuit, comprising a plurality of the resistors connected between gates of first MOSFETs connected to first power supply circuits, between the drains and the grounds of the first MOSFETs and between a source and a power supply voltage Vcc, in a reference voltage generating circuit that employs a source follower circuit which regulates the gradients of negative temperature coefficients in the voltages outputted by the first power supply source, a plurality of the resistors comprise thin metallic films. COPYRIGHT: (C)2006,JPO&NCIPI
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