●The LMT70 is an ultra-small, high-precision, low-power CMOS analog temperature sensor with an output enable pin. Applications for the LMT70 include virtually any type of temperature sensing where cost-effective, high precision and low-power are required, such as Internet of Things (IoT) sensor nodes, medical thermometers, high-precision instrumentation and battery powered devices. The LMT70 is also a great replacement for RTD and precision NTC/PTC thermistors.
●Its output enable pin allows multiple LMT70s to share one ADC channel, thus simplifying ADC calibration and reducing the overall system cost for precision temperature sensing. The LMT70 also has a linear and low impedance output allowing seamless interface to an off-the-shelf MCU/ADC. Dissipating less than 36µW, the LMT70 has ultra-low self-heating supporting its high-precision over a wide temperature range.
●The LMT70A provides unparalleled temperature matching performance of 0.1°C (max) for two adjacent LMT70A"s picked from the same tape and reel. Therefore, the LMT70A is an ideal solution for energy metering applications requiring heat transfer calculations.
● Accuracy:
● ±0.05°C (typ) or ±0.13°C (max) from 20°C to 42°C
● ±0.2°C (max) from -20°C to 90°C
● ±0.23°C (max) from 90°C to 110°C
● ±0.36°C (max) from -55°C to 150°C
● Wide Temperature Range: −55°C to 150°C
● Matching of Two Adjacent LMT70A on Tape and Reel: 0.1°C (max) at 30°C
● Very Linear Analog Temperature Sensor with Output Enable Pin
● NTC Output Slope: -5.19 mV/°C
● Output On/Off Switch with RDS on < 80 Ω
● Wide Power Supply Range: 2.0 V to 5.5 V
● Low Power Supply Current: 9.2 µA (typ)12 µA (max)
● Ultra Small 0.88 mm by 0.88 mm 4-bump WLCSP (DSBGA) Package
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