| 摘要 |
<p>Integrated temperature limit sensors which may be used as stand alone devices or as part of a larger integrated circuit to provide a logic signal change upon a temperature rise to a predetermined level, or alternatively, upon a temperature drop to a predetermined level. The temperature limit sensor generates a voltage proportional to absolute temperature and compares that voltage with a voltage proportional to the voltage across a forward biased pn junction, or a base-emitter voltage of a transistor. The combination of the increasing voltage proportional to absolute temperature and the decreasing pn junction voltage with absolute temperature provides enhanced sensitivity and reliable and repeatable performance.</p> |
