CIRCUIT FOR PROVIDING POSITIVE TEMPERATURE COEFFICIENT CURRENT, CIRCUIT FOR PROVIDING NEGATIVE TEMPERATURE COEFFICIENT CURRENT AND CURRENT REFERENCE CIRCUIT USING THE SAME

摘要

Increase as the temperature increases from the reference current generation circuit providing a first current generation unit and the first sub-current which decreases as temperature decreases, and decrease when the temperature increases and generates a reference voltage which increases when the temperature decreases. In the second current generator and a reference voltage by using a MOS transistor operating in the linear region to generate the second sub-electric current to decrease when the temperature increases and increases as the temperature decreases. Summing the first sub-electric current and the second sub-electric current from the synthesis unit and provides the reference current. Thus, it is possible to provide a reference current receiving less influence of the temperature, voltage or process changes.