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SNIS177B – MARCH 2013 – REVISED SEPTEMBER 2015 LMT90 SOT-23 Single-Supply Centigrade Temperature Sensor
1 Features 3 Description The LMT90 device is a precision integrated-circuit
temperature sensor that can sense a -40В°C to
+125В°C temperature range using a single positive
supply. The output voltage of LMT90 is linearly
proportional to Celsius (Centigrade) temperature (10
mV/В°C) and has a DC offset of 500 mV. The offset
allows reading negative temperatures without the
need for a negative supply. The ideal output voltage
of the LMT90 ranges from 100 mV to 1.75 V for a
-40В°C to 125В°C temperature range. The LMT90 does
not require any external calibration or trimming to
provide accuracies of В±3В°C at room temperature and
В±4В°C over the full -40В°C to +125В°C temperature
range. Trimming and calibration of the LMT90 at the
wafer level assure low cost and high accuracy. The
linear output, 500-mV offset, and factory calibration of …
