Product Details

describe:

The LMT70 is an ultra-small, high-accuracy, low-power CMOS analog temperature sensor with an output enable pin. Applications for the LMT70 include virtually any type of ADP1715ARMZ-R7 temperature sensor that requires cost-effective, high-accuracy, and low-power consumption, such as Internet of Things (IoT) sensor nodes, medical thermometers, high-precision instruments, and battery-powered devices. The LMT70 is also an excellent replacement for RTDs and precision NTC/PTC thermistors.

Its output enable pin allows multiple LMT70s to share a single ADC channel, simplifying ADC calibration and reducing overall system cost for precision temperature sensing. The LMT70 also features linear and low-impedance outputs for seamless interfacing with off-the-shelf MCUs/ADCs. The LMT70 consumes less than 36μW and has ultra-low self-heating, supporting its high accuracy over a wide temperature range.

The LMT70A provides unmatched 0.1°C (max) temperature matching performance for two adjacent LMT70As picked from the same reel. Therefore, the LMT70A is an ideal solution for energy metering applications requiring heat transfer calculations.

characteristic:

●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 LMT70As on tape and reel: 0.1°C (max) at 30°C

● Ultra-linear analog temperature sensor with output enable pin

●NTC output slope: -5.19 mV/°C

Output on/off switch when RDS on < 80 Ω

●Wide power supply range: 2.0V to 5.5V

●Low supply current: 9.2 μA (typ.) 12 μA (max.)

Ultra-small 0.88 mm x 0.88 mm 4-bump WLCSP (DSBGA) package

parameter:

Local Sensor Accuracy (Max) (+/- C): 0.1

Operating temperature range (°C): -55 to 150

Power supply voltage (Min) (V): 2

Power supply voltage (Max) (V): 5.5

Supply Current (Max) (uA): 12

Interface type: analog output

Sensor Gain (mV/Deg C): -5.19