The digital single-chip solution of the M117 temperature sensor

High-precision temperature detection applications generally use the RTD (Platinum Resistance Temperature Detector) solution, but to achieve the high precision of the RTD, it needs to be implemented with precision components or special processing chips. The resistance mismatch generated during the PCB layout will also affect the measurement accuracy. , Finally, a complex calibration algorithm is required. After complicated software and hardware design, the RTD scheme error can reach ±0.03℃, but most high-precision temperature detection ±0.1℃ can be satisfied. In response to this need, the calibrated digital high-precision temperature sensor chip-M117, which is represented by, with a digital I2C interface, plug, and play, greatly simplifies the design.

As a domestic supplier of temperature and humidity sensor chips, focuses on the design of temperature detection solutions. The temperature sensor chip is based on the characteristic relationship between the PN junction temperature of the CMOS semiconductor and the bandgap voltage and directly outputs temperature information through I2C after front-end processing and digital calibration. Each chip is fitted with calibration coefficients according to the temperature error characteristics before leaving the factory, stored in the chip EEPROM, and the chip is automatically invoked and output after compensation when it is working. At the same time, due to the use of semiconductor technology, the chip also has the characteristics of fast temperature measurement and low power consumption.

In summary, the digital temperature sensor chip M117 represented by is very suitable for high-precision temperature acquisition applications in the Internet of Things, smart wearables, and consumer electronics because of its fast acquisition speed and low power consumption. If you have already used TI's TMP117, you can also consider this domestic chip, which is a completely PIN2PIN replacement.