DS18b20 Waterproof Temperature Probe

DS18b20 Waterproof Temperature Probe info

DS18b20 Waterproof Temperature Probe provides 9-bit to 12-bit Celsius temperature measurements and has an alarm function with nonvolatile user programmable upper and lower trigger points. DS18b20 Waterproof Temperature Probe communicates over a 1-Wire bus that by definition requires only one data line (and ground) for communication with a central microprocessor. It has an operating temperature range of -55°C to +125°C and is accurate to ±0.5°C over the range of -10°C to +85°C. In addition, the DS18B20 can derive power directly from the data line (“parasite power”), eliminating the need for an external power supply.

Each DS18b20 Waterproof Temperature Probe has a unique 64-bit serial code, which allows multiple DS18B20s to function on the same 1-Wire bus. Thus, it is simple to use one microprocessor to control many DS18B20s distributed over a large area. Applications that can benefit from this feature include HVAC environmental controls, temperature monitoring systems inside buildings, equipment, or machinery, and process monitoring and control systems.

DS18b20 Waterproof Temperature Probe - General Specifications

• Unique 1-wire interface requires only one port pin for communication
• Each device has a unique 64-bit serial code stored in an on-board ROM
• Multidrop capability simplifies distributed temperature-sensing applications
• Requires no external components
• Can be powered from data line

DS18b20 Waterproof Temperature Probe - Technical Specifications

• Operating Voltage: 3.0 - 5.5V DC
• Temperature Measurement Range: -55°C to 125°C
• Accuracy: ±0.5°C (from -10°C to +85°C)
• Conversion Time: 750ms (Max)
• Resolution: Selectable 9 to 12 Bits

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DS18B20 Datasheet