Maxim Integrated DS18S20+ Programmable Resolution 1-Wire Digital Thermometer
The DS18S20+ is a versatile and compact digital thermometer from Maxim Integrated that provides 9-bit to 12-bit Celsius temperature measurements and has an alarm function with nonvolatile user-programmable upper and lower trigger points. This high-performance temperature sensor is an ideal solution for a wide range of temperature monitoring applications.
Designed to communicate over a 1-Wire bus that requires only one data line (and ground) for communication with a central microprocessor, the DS18S20+ simplifies system design by minimizing the number of wires needed for sensor networks. Each DS18S20+ has a unique 64-bit serial code, which allows multiple DS18S20+ sensors to function on the same 1-Wire bus. This feature makes it simple to deploy systems with multiple temperature points monitored over a single wire.
The DS18S20+ operates over a wide temperature range of -55°C to +125°C with ±0.5°C accuracy from -10°C to +85°C. This precision, combined with the programmable resolution and the ability to perform conversions at user-defined intervals, makes it highly adaptable for various temperature sensing requirements.
Key features of the DS18S20+ include:
- Unique 1-Wire interface requires only one port pin for communication
- Each device has a unique 64-bit serial code stored in an onboard ROM
- Can be powered from data line; power supply range is 3.0V to 5.5V
- Measures temperatures from -55°C to +125°C (-67°F to +257°F)
- ±0.5°C accuracy from -10°C to +85°C
- User-definable nonvolatile (NV) alarm settings
- Alarm search command identifies devices with temperatures outside of programmed limits
- Optional 3.3V version available; DS18S20+PAR
The DS18S20+ is available in a convenient TO-92 package, making it easy to integrate into your design. Whether you're developing home automation systems, environmental controls, or industrial process equipment, the DS18S20+ offers a reliable and cost-effective solution for your temperature sensing needs.
