Maxim Integrated DS18B20+ Programmable Resolution 1-Wire Digital Thermometer

The DS18B20+ from Maxim Integrated is a highly precise digital thermometer that offers a convenient solution for temperature sensing applications. This compact sensor provides 9-bit to 12-bit Celsius temperature measurements and has an alarm function with nonvolatile user-programmable upper and lower trigger points.

The DS18B20+ operates over a wide temperature range of -55°C to +125°C with an accuracy of ±0.5°C over the range of -10°C to +85°C. Its unique 1-Wire interface requires only one data line (and ground) for communication with a central microprocessor, making it ideal for situations where limited pins are available and multiple sensors need to be connected on the same data line.

Key features of the DS18B20+ include:

• Programmable resolution from 9 bits to 12 bits, allowing users to balance measurement resolution and conversion time.
• Power supply range of 3.0V to 5.5V, making it suitable for many digital devices.
• The ability to be powered from data line; power supply is not required for each sensor because the DS18B20+ can derive power directly from the data line ("parasite power"), simplifying the wiring.
• Each device has a unique 64-bit serial code stored in an onboard ROM, enabling multiple sensors to be used on the same 1-Wire bus.
• Multi-point capability allowing multiple DS18B20+ devices to be connected over long distances with reduced wiring complexity.

Applications for the DS18B20+ are diverse and include HVAC environmental controls, temperature monitoring systems inside buildings, equipment, or machinery, and process monitoring and control systems. Its robust design and ease of integration make it a preferred choice for professionals and hobbyists alike.

Maxim Integrated provides detailed technical documentation, making the integration of the DS18B20+ into your projects straightforward. Whether you are designing a sophisticated climate control system or simply need to monitor temperature, the DS18B20+ offers a reliable and cost-effective solution.