TI LMT70AYFQR

The LMT70 is an ultra-small, high-accuracy, low-power CMOS analog temperature sensor with an output enable pin. The LMT70 is suitable for virtually all high-accuracy, low-power, cost-effective temperature sensing applications, such as IoT sensor nodes, medical thermometers, high-precision instrumentation, and battery-powered devices. The LMT70 is also an ideal replacement for RTDs and high-accuracy NTC/PTC thermistors. Multiple LMT70 devices can share a single ADC channel using the output enable pin, simplifying the ADC calibration process and reducing the overall cost of precision temperature sensing systems. The LMT70 also features a linear, low-impedance output for seamless interfacing with off-the-shelf MCU/ADC solutions. With thermal dissipation below 36μW, the LMT70's ultra-low self-heating characteristic enables high accuracy across a wide temperature range. The LMT70A offers excellent temperature matching performance, with a maximum temperature difference of 0.1℃ between two adjacent LMT70A devices taken from the same reel. This makes the LMT70A an ideal solution for energy metering applications that require heat transfer calculation.

• ±0.05°C (typical) or ±0.13°C (maximum) over 20°C to 42°C
• ±0.2°C (maximum) over -20°C to 90°C
• ±0.23°C (maximum) over 90°C to 110°C
• ±0.36°C (maximum) over -55°C to 150°C
• Wide temperature range: -55°C to 150°C
• Temperature matching between two adjacent LMT70A in tape and reel: 0.1°C (maximum) at 30°C
• Ultra-linear analog temperature sensor with output enable pin
• Negative temperature coefficient (NTC) output slope: -5.19mV/°C
• Output on/off switch with RDSon < 80Ω
• Wide supply range: 2.0V to 5.5V
• Low supply current: 9.2μA (typical), 12μA (maximum)
• Ultra-compact 0.88mm×0.88mm 4-bump WLCSP (DSBGA) package

• IoT sensor nodes
• Industrial RTD (Class AA) replacement or precision NTC/PTC thermistor alternative
• Medical/fitness devices
• Medical thermometers
• Body temperature monitors
• Metrological temperature compensation