SOURCE OF ELECTRIC SIGNAL PROPORTIONAL TO ABSOLUTE TEMPERATURE Russian patent published in 1998 - IPC

FIELD: microelectronic temperature sensitive elements, sources of reference voltage. SUBSTANCE: for exclusion of necessity of use of ohmic resistors with low temperature coefficient of resistance and outside resistor for conversion of current to voltage proposed source of electric signal proportional to absolute temperature has heat-sensitive couple composed of two transistors T, current density in first one being less than in second one, ohmic resistor R placed in current circuit TI, controlled current sources connected to output electrodes of transistors. Inputs of single- stage differential amplifier are connected to transistors. Transistor in diode connection placed as driving one by circuit of current mirror with transistor is load to differential amplifier on side of inverting input. Source is inserted with additional current source which currents are proportional to currents in transistors and ohmic resistor R having same temperature coefficient of resistance as R has. EFFECT: improved functional reliability of source. 3 cl, 6 dwg