RT18B20 is a high precision digital temperature sensor with a single bus interface and a configurable temperature resolution of 9 to 12 bits.
Each chip has a unique 64-bit code and 3 bytes of non-volatile memory. The 64-bit unique ID facilitates RT18B20 networking.
In distributed applications, multiple RT18B20s can be soldered on a single bus to work simultaneously.
One of the non-volatile memories can be configured with programming information for the upper and lower temperature alarm limits and resolution.
The chip requires almost no peripheral devices and the circuit is simple.
- Single bus interface saves resources.
- Highly integrated, no peripherals required.
- Temperature measurement range: from -55℃ to 125℃ with full temperature range accuracy of ±0.5℃.
- Parasitic power supply mode only requires DQ and GND pins.
- 64-bit unique ROM code for distributed temperature measurement system applications, ROM code can also be customized according to customer needs.
- Customizable alarm thresholds.
- Temperature transition time: 500ms.
- Compatible with 3.3V and 5V operating voltages
Grain monitoring
Control Panel Temperature Measurement
Cold chain logistics and storage temperature measurement
Distributed network temperature measurement system
| Model | Accuracy | Interface Type | Resolution | Operating Temperature | Operating Voltage | Package Type | Status |
| RT18B20ACB | ±0.5@﹣10℃~﹢85℃ | one-wire | 9-12 bit | ﹣55℃~﹢125℃ | 3V~5.5V | TO-92 | MP |
Grain monitoring
The temperature detection device of granary established based on RT18B20 can realize the digitization and intelligence of grain storage temperature control system, and protect the safety of grain.
Cold chain logistics and storage temperature measurement
Temperature sensor series developed by Runchip have high accuracy and undergo strict high temperature aging tests, providing reliable temperature data for cold chain logistics and storage temperature monitoring systems.
