Overview
The SensorWorks DS18B20 is identified as a DS18B20 digital temperature sensor using the 1-Wire communication protocol. The DS18B20 device family provides digitally converted Celsius temperature measurements, programmable resolution, and multidrop operation using a unique device identification code.
Temperature Measurement
The DS18B20 supports a temperature measurement range of -55°C to +125°C and provides ±0.5°C accuracy from -10°C to +85°C. Resolution can be programmed from 9 bits through 12 bits, with 12-bit operation providing 0.0625°C temperature increments.
1-Wire Communication
The sensor communicates over a 1-Wire bus using a single data line plus ground. Each DS18B20 contains a unique 64-bit serial code, allowing multiple sensors to share the same bus and be individually addressed by a host controller.
Power and Alarm Functions
The DS18B20 operates from a 3.0V to 5.5V supply and supports parasite-power operation. Nonvolatile programmable upper and lower temperature alarm thresholds allow the device to identify temperature conditions outside configured limits.
Key Features
- 9-bit to 12-bit programmable temperature resolution
- -55°C to +125°C measurement range
- ±0.5°C accuracy from -10°C to +85°C
- 1-Wire digital communication interface
- Unique 64-bit identification for multidrop sensor networks
Applications
- Temperature monitoring systems
- HVAC environmental controls
- Equipment and machinery monitoring
- Process monitoring and control
- Embedded and distributed temperature sensing
DC Supplies Product Note
Because the exact SensorWorks package configuration could not be independently verified, package-specific dimensions, weight, cable configuration, and included accessories should be confirmed against the supplied unit before ordering.
Specifications
| Specification | Details |
|---|
| Brand | SensorWorks |
| Part Number / MPN | DS18B20 |
| Product Type | Digital Temperature Sensor |
| Interface | 1-Wire |
| Temperature Range | -55°C to +125°C |
| Accuracy | ±0.5°C from -10°C to +85°C |
| Resolution | 9-bit to 12-bit programmable |
| 12-Bit Resolution | 0.0625°C |
| Supply Voltage | 3.0V to 5.5V |
| Power Mode | External supply or parasite power |
| Device Identification | Unique 64-bit serial code |
| Alarm Function | Programmable nonvolatile upper and lower temperature thresholds |
Frequently Asked Questions
What is the SensorWorks DS18B20?
It is identified by the DS18B20 MPN and provides digital temperature measurement using the 1-Wire communication protocol.
What temperature range does the DS18B20 support?
The DS18B20 supports temperature measurements from -55°C to +125°C.
Can multiple DS18B20 sensors share one bus?
Yes. Each device has a unique 64-bit serial code, allowing multiple sensors to operate on the same 1-Wire bus.
What resolution does the DS18B20 provide?
The resolution is programmable from 9 bits to 12 bits, with 12-bit operation providing 0.0625°C increments.
