Reference voltage generating circuit having a temperature characteristic correction circuit providing low temperature sensitivity to a reference voltage

A reference voltage generating circuit for generating a reference voltage by using a first voltage supplied by a first voltage source and a second voltage supplied by a second voltage source, said reference voltage generating circuit comprising:

• a reference voltage transistor pair comprising a depletion N-channel field effect transistor and an enhancement N-channel field effect transistor connected in series between said first voltage source and said second voltage source so that the reference voltage is output from a juncture between a gate of said depletion N-channel field effect transistor and a gate of said enhancement N-channel field effect transistor;
• and
• a temperature characteristic correction circuit provided to at least one of said depletion N-channel field effect transistor and said enhancement N-channel field effect transistor,
• wherein said temperature characteristic correction circuit changes temperature sensitivity of the reference voltage by changing an effective gate size of said one of said depletion N-channel field effect transistor and said enhancement N-channel field effect transistor.