Introduction to Digital Temperature Sensor DS18B20

rain

Introduction to Digital Temperature Sensor DS18B20 [Copy link]

Introduction to DALLAS's latest single-wire digital temperature sensor DS18B20 The new "one-wire device" is smaller, has a wider applicable voltage, and is more economical. Dallas Semiconductor's digital temperature sensor DS1820 is the world's first temperature sensor that supports the "one-wire bus" interface. The unique and economical characteristics of the one-wire bus allow users to easily build sensor networks and introduce new concepts for the construction of measurement systems. Now, the new generation of "DS1820" is smaller, more economical, and more flexible. It allows you to give full play to the advantages of the "one-wire bus". DS18B20, DS1822 "one-wire bus" digital temperature sensor Like DS1820, DS18B20 also supports the "one-wire bus" interface, measuring temperature range of -55°C~+125°C, within the range of -10~+85°C, the accuracy is ±0.5°C. The accuracy of DS1822 is poor at ±2°C. The field temperature is directly transmitted in digital form of the "one-wire bus", which greatly improves the anti-interference ability of the system. Suitable for on-site temperature measurement in harsh environments, such as: environmental control, equipment or process control, temperature measurement consumer electronics, etc. Unlike the previous generation of products, the new product supports a voltage range of 3V~5.5V, making system design more flexible and convenient. Moreover, the new generation of products is cheaper and smaller in size. Features of DS18B20 and DS1822 DS18B20 can be programmed with a resolution of 9~12 bits and an accuracy of ±0.5°C. A smaller package is available, with a wider voltage range. The resolution setting and the user-set alarm temperature are stored in the EEPROM and are still saved after power failure. The performance of DS18B20 is the best among the new generation of products! The performance-price ratio is also excellent! DS1822 is compatible with DS18B20 software and is a simplified version of DS18B20. The EEPROM for storing user-defined alarm temperature and resolution parameters is omitted, and the accuracy is reduced to ±2°C. It is suitable for applications with low performance requirements and strict cost control, and is an economical product. Following the early products of "One-Wire Bus", DS1820 opened up a new concept of temperature sensor technology. DS18B20 and DS1822 provide more choices of voltage, characteristics and packaging, allowing us to build an economical temperature measurement system that suits us.