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LM26LV - low voltage temperature sensor / temperature switch

31.10.2007

National Semiconductor has released the LM26LV, a low-voltage micro-power temperature sensor and switch with two outputs. The switching temperature level can be preset to any temperature between 0 and 150°C.

A built-in temperature hysteresis keeps the reading stable in the event of temperature fluctuations. The LM26LV generates a signal when the substrate reaches the Ttrip temperature component. The microcircuit returns to its original state in the event of a temperature drop below Ttrip-Thyst. The analog output Vtemp is set to a voltage inversely proportional to the measured temperature.

When a positive voltage (logic one) is applied to the TRIP TEST input, the following states are set at the outputs: 1) digital outputs go into the test state; 2) the output Vtemp is set to the voltage corresponding to Vtrip. The minimum supply voltage of 1,6 V allows the microcircuit to be used for systems with a low supply voltage level.

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