This is a circuit for sensing the temperature. This circuit is simple form circuit of the temperature sensor. This circuit is built by op amp LM20, ADC. This is the figure of the circuit.
Basic fro the figure, the output voltage is transfer function of various analog output temperature sensors. These sensors are available in tiny packages like the SC70 and the 4-bump micro SMD. The LM20 is the smallest, lowest power (10μA max) analog output temperature sensor from National Semiconductor, Inc has released and is available in the SC70 and micro SMD packages. The LM70 and LM74 are MICROWIRE/SPI compatible digital temperature sensors and are available in the LLP and 8-bump micro SMD packages, respectively. The LM70 and LM74 have resolutions of 0.125°C and 0.0625°C, respectively. The LM74 is the most accurate of the two, with an accuracy of better than ±1.25°C.
Basic fro the figure, the output voltage is transfer function of various analog output temperature sensors. These sensors are available in tiny packages like the SC70 and the 4-bump micro SMD. The LM20 is the smallest, lowest power (10μA max) analog output temperature sensor from National Semiconductor, Inc has released and is available in the SC70 and micro SMD packages. The LM70 and LM74 are MICROWIRE/SPI compatible digital temperature sensors and are available in the LLP and 8-bump micro SMD packages, respectively. The LM70 and LM74 have resolutions of 0.125°C and 0.0625°C, respectively. The LM74 is the most accurate of the two, with an accuracy of better than ±1.25°C.
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