DS18B20 Programmable Resolution 1-Wire Temperature Sensor
The DS18B20 digital thermometer provides 9 to 12-bit resolution temperature measurements, with programmable non-volatile alarm settings for upper and lower temperature thresholds. It communicates via a single-wire protocol, requiring only one data line and a ground line. The temperature measurement range is -55C to +125C (-67F to +257F), with an accuracy of 0.4C in the range of -10C to 70C. It can also operate in parasite power mode, drawing power directly from the data line, eliminating the need for an external power supply. Each DS18B20 has a unique 64-bit serial number, allowing multiple sensors to be connected in a network on the same bus, controlled by a single processor. This networking capability is ideal for applications such as HVAC, building and equipment monitoring, grain temperature monitoring, and industrial process control.
Product Attributes
- Brand: Msksemi
- Origin: China (implied by copyright and website)
Technical Specifications
| Feature | Specification |
| Interface | 1-Wire |
| Unique ID | 64-bit serial number per chip |
| Multi-drop Capability | Yes, without external components |
| Power Supply | 2.5V to 5.5V (via data line or VDD pin) |
| Temperature Range | -55C to +125C (-67F to +257F) |
| Accuracy | 0.4C in the range of -10C to 70C |
| Temperature Resolution | 9-12 bits selectable |
| Conversion Speed | < 750ms at 12-bit resolution |
| Alarm Function | User-definable non-volatile temperature alarm settings |
| ESD Protection | HBM 8000V, MM 800V |
| Package Types | MSOP8, SOP8 (SMD); TO-92, TO-92S (3-pin) |
| Parasite Power Mode | Supported (VDD pin must be connected to ground) |
| Configuration Register | Sets resolution (9, 10, 11, or 12 bits) |
| CRC Generator | For data integrity checking |
Application Scenarios
- Temperature Control
- Industrial Systems
- Consumer Products
- Grain Temperature Monitoring
- Thermometers
- Any heat-sensing system
2405081538_MSKSEMI-DS18B20-MS_C5379069.pdf
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