The DS18B20-PAR digital thermometer provides 9 to 12-bit centigrade temperature measurements and has an alarm function with nonvolatile user-programmable upper and lower trigger points. The DS18B20-PAR does not need an external power supply because it derives power directly from the data line ("parasite power"). The DS18B20-PAR communicates over a 1-Wire® bus, which 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 +100°C and is accurate to ±0.5°C over a range of -10°C to +85°C. Each DS18B20-PAR has a unique 64-bit identification code, which allows multiple DS18B20-PARs to function on the same 1-wire bus; thus, it is simple to use one microprocessor to control many DS18B20-PARs 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.
Key Features
| Applications/Uses
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| title | Download file |
|---|---|
| DS18B20-PAR Data Sheet | DS18B20-PAR.pdf |
| Part Number | Sensor Type | Interface | Channels | Accuracy (±°C) | Parasite Pwr. | Temp. Thresh. | Temp. Resolution (bits) | Multi Droppable | Oper. Temp. (°C) | Package/Pins | Budgetary Price |
|---|---|---|---|---|---|---|---|---|---|---|---|
| See Notes | |||||||||||
| DS18B20-PAR | Local | 1-Wire | One | 0.5 | Yes | Programmable (NV) | 9 10 11 12 | Yes | -55 to +100 | TO92/3 | $2.40 @1k |
| Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
|---|---|---|---|---|---|
| DS18B20-PAR | No Longer Available | DS18B20+T&R | TO92,;3 pin;19.5 mm² | -40°C to +85°C | No |
| DS18B20-PAR+T&R | Active | TO92,;3 pin;27.6 mm² | -40°C to +85°C | Lead Free | |
| DS18B20-PAR/T&R | No Longer Available | DS18B20+PAR | TO92,;3 pin;27.6 mm² | -40°C to +85°C | No |
