| 摘要 |
<p>A circuit for generating an output voltage which is proportional to temperature with a required gradient is disclosed. The circuit relies on the principle that the difference in the base emitter voltage of two bipolar transistors with differing areas, if appropriately connected, can result in a current which has a positive temperature coefficient, that is a current which varies linearly with temperature such that as the temperature increases the current increases. It is important to maintain a stable internal line voltage in the face of significant variations in a supply voltage to the circuit. This is achieved herein by providing control elements appropriately connected to a differential amplifier. The stable internal supply voltage can be used to power a subsequent stage of the circuit for fine control of the gradient of the voltage proportional to temperature. <IMAGE></p> |
