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Nanochip offers a two-pin digital output temperature sensor that can directly replace NTC

Tuesday, September 25, 2018

Suzhou Nanochip Microelectronics Co., Ltd., a leading provider of signal chain chips and solutions in China, announced the availability of the high-precision dual-pin digital output temperature sensor chip NST1001.

The NST1001 features a pulse-count digital output and high accuracy over a wide temperature range. It can be used directly with the MCU to ensure measurement accuracy while reducing MCU overhead and reducing cost. The NST1001's temperature range is from -50°C to 150°C, meeting the temperature requirements for cold chain transportation, grain monitoring, household appliances, and industrial Internet of Things. Compared with the traditional NTC thermistor, the NST1001 has simpler, more accurate and more stable characteristics. The maximum error is ±0.5°C in the temperature range of -20°C to 85°C, and the maximum error is over the full temperature range. ±0.75 ° C, resolution up to 0.0625 ° C. In addition, the NST1001 offers a high-resolution version of the NST1001_H with a temperature range of -20°C to 80°C and an extremely high resolution of 0.03125°C.

Traditional NTC thermistors are low cost, simple to connect, and easy to use as temperature probes. They are widely used in consumer electronics, home appliances, industrial and Internet of Things. However, NTC thermistors are usually very nonlinear, guaranteeing a certain accuracy only over a narrow temperature range, and the measurement accuracy in a slightly larger temperature range is greatly reduced.

NST Microelectronics' low-power digital output temperature sensor chip NST1001 has only two pins -- GND and DQ -- that can be used to directly replace traditional NTC resistors without changing the peripheral circuitry. When the chip is working, after the DQ is connected through a pull-up resistor, the pulse signal is sent periodically on the DQ pin. The MCU can directly obtain the temperature reading by counting the pulse signal through a GPIO, which greatly simplifies the circuit. Hardware facilities.

 

Author:Brittany Antonia (The author of article owns the copyright.)

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