RTD and Precision NTC Thermistor IC
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LMT70, LMT70A
SNIS187A – MARCH...
Description
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LMT70, LMT70A
SNIS187A – MARCH 2015 – REVISED JULY 2015
LMT70, LMT70A ±0.05°C Precision Analog Temperature Sensor, RTD and Precision NTC Thermistor IC
1 Features
1 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
2 Applications
Internet of Things (IoT) Sensor Nodes Industrial RTD (Class AA) or Precision NTC/PTC
Thermistor Replacement Medical/Fitness Equipment Medical Thermometer Human Body temperature monitor Metering Temperature Compensation
3 Description
The LMT70 is an ultra-small, high-precision, lowpower CMOS analog temperature sensor with an output enable pin. Applications for the LMT70 include virtually any type of temperature sensing where costeffective, 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 rep...
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