| 摘要 |
PROBLEM TO BE SOLVED: To provide an addition comparator having one or more temperature- compensated input by providing at least one differential pair for respectively receiving a difference voltage input regardless of temperature and at least one differential pair for respectively receiving a differential voltage input depending on the temperature. SOLUTION: An input means is provided with three differential pairs 14, 16 and 18 for receiving three difference voltages Vid1, Vid2 and Vid3. The differential pair 14 is biased by a current source 20 having a current I1 and the differential pair 16 is biased by a current source 22 having a current I2 . The current sources 20 and 22 respectively generate the currents I1 and I2 . The differential pair 18 for driving the input means with the voltage to be fluctuated by the temperature is structured for generated a constant current source 24 having a current I3 regardless of the temperature, on the other hand. Concerning three pairs of transistors, their collectors are further mutually connected and next coupled through resistor to the positive supplied voltage. |
