Increase accuracy and reduce power consumption
Suitable for pharmaceutical cold chains


Accuracy, low power consumption, and simple design are key goals in pharmaceutical cold chains, medical monitors, and industrial automation applications. This is because even a small deviation of 2°C can have a negative impact on products and processes.

Maxim Integrated Korea released the MAX31889 and MAX31825 temperature sensor ICs on the 3rd.

The MAX31889 ^I2C temperature sensor has an accuracy of ±0.25°C in the range of -20 to 105°C and ±0.65°C in the range of -40 to 125°C. The operating voltage is 1.7 to 3.6V, the operating current during measurement is 68µA, and the standby current is 0.55µA.

It is available in a 2×2×0.8mm 6-pin µDFN package, with 4 ^I2C addresses available, and more addresses available upon request to Maxim.

The MAX31825 1-wire temperature sensor has an accuracy of ±1°C in the range of 0 to 70°C and ±1.75°C in the range of -45 to 145°C. The power supply range is 1.6 to 3.6V when using external power and 2.3 to 3.6V when using parasitic power, and it is provided in a 6-bump WLP package.

Each product has a unique 64-bit serial code, allowing up to 64 MAX31825 ICs to be placed on a single 1-wire bus. Additionally, it includes two address input pins that can identify the physical location of other sensors relative to one of the sensors.