سنسور و مبدل سنسور دما سنسور دما با خروجی آنالوگ و دیجیتال

Product Attributes

Introduction

The TMP35/TMP36/TMP37 are low voltage, precision centigrade temperature sensors. They provide a voltage output that is linearly proportional to the Celsius (centigrade) temperature. The TMP35/TMP36/TMP37 do not require any external calibration to provide typical accuracies of ± 1°C at +25°C and ± 2°C over the - 40°C to +125°C temperature range. The low output impedance of the TMP35/TMP36/TMP37 and its linear output and precise calibration simplify interfacing to temperature control circuitry and ADCs. All three devices are intended for single- supply operation from 2.7 V to 5.5V maximum. The supply current runs well below 50 μA providing very low self- heating - less than 0.1°C in still air. In addition, a shutdown function is provided to cut the supply current to less than 0.5μA The TMP35 is functionally compatible with the LM35/LM45 and provides a 250mV output at 25°C. The TMP35 reads temperatures from 10°C to 125°C. The TMP36 is specified from - 40°C to +125°C, provides a 750 mV output at 25°C, and operates to 125°C from a single 2.7 V supply. The TMP36 is functionally compatible with the LM50. Both the TMP35 and TMP36 have an output scale factor of 10mV / °C The TMP37 is intended for applications over the range of 5°C to 100°C and provides an output scale factor of 20mV / °C. The TMP37 provides a 500 mV output at 25°C. Operation extends to 150°C with reduced accuracy for all devices when operating from a 5V supply. The TMP35/TMP36/TMP37 are available in low cost 3 - lead TO - 92, 8 - lead SOIC_N, and 5 - lead SOT - 23 surface - mount packages.

Features

• Low voltage operation (2.7V to 5.5V)
• Calibrated directly in °C (10mV / °C scale factor, 20mV / °C on TMP37)
• +2°C accuracy over temperature (typ)
• ± 0.5°C linearity (typ)
• Stable with large capacitive loads
• Specified - 40°C to +125°C operation, to +150°C
• Less than 50 μA quiescent current
• Shutdown current 0.5μA max
• Low self - heating
• Qualified for automotive applications

Applications

• Environmental control systems
• Thermal protection
• Industrial process control
• Fire alarms
• Power system monitors
• CPU thermal management