Maxim Integrated DS1821S

of DS1821S The DS1821S is a digital temperature sensor from Maxim Integrated (now part of Analog Devices). It provides precise temperature measurements in a 1-wire interface configuration, allowing for easy integration into various systems. The DS1821S is designed for high-resolution temperature measurement and digital data communication, making it suitable for a range of applications. Functions - Temperature Measurement: Provides accurate temperature readings with a resolution of up to 0.5°C. - 1-Wire Interface: Utilizes a single data line for communication, simplifying wiring. - Alarm Features: It has programmable temperature limits that can trigger alarms. - Power Supply Options: Can operate in a parasitic or powered mode. - Checksum for Data Integrity: Ensures data reliability through error checking. Applications - HVAC systems for temperature monitoring and control. - Industrial temperature sensing for equipment monitoring. - Medical devices for environmental control. - Consumer appliances that require temperature regulation. - Environmental monitoring systems. Alternative Parts - DS18B20: Another popular 1-wire digital thermometer with higher resolution. - LM35: An analog temperature sensor for simpler applications (but requires ADC conversion). - MAX31850K: A digital thermocouple interface that offers high-temperature measurement capabilities. Embedded Modules - Modules based on the DS1821S are often available from various suppliers, integrating the sensor with necessary circuitry to simplify integration into projects. Related Q&A Q1: What is the temperature range of the DS1821S? A1: The DS1821S has a temperature measurement range from -55°C to +125°C. Q2: What is the significance of the 1-wire interface on the DS1821S? A2: The 1-wire interface allows multiple DS1821S sensors to be connected to a single data line, reducing wiring complexity and facilitating easier system design. Q3: Can the DS1821S operate in low-power applications? A3: Yes, the DS1821S is designed to be power-efficient, with the capability to operate in parasitic mode, drawing minimal power during operation. Q4: How can temperature alarms be configured on the DS1821S? A4: The DS1821S features programmable temperature limits that can trigger alarms, which can be configured through its digital interface. Q5: What is the typical accuracy of the DS1821S temperature measurements? A5: The DS1821S typically provides an accuracy of ±0.5°C within the range of 0°C to +70°C, making it suitable for various temperature-sensing applications.