DS18B20 TO-92 temperature sensor
The DS18B20 TO-92 Temperature Sensor is a high-precision digital thermometer that communicates through a 1-Wire® interface, requiring only a single microcontroller pin for data transmission. Each sensor contains a unique 64-bit serial number, allowing multiple sensors to operate on the same bus. It measures temperatures from -55°C to +125°C with an accuracy of ±0.5°C over the range of -10°C to +85°C. The sensor operates from 3.0V to 5.5V, supports parasite power mode, and offers programmable resolutions from 9 to 12 bits, making it ideal for industrial, consumer, and embedded temperature monitoring applications.
يُعد حساس الحرارة الرقمي DS18B20 بحزمة TO-92 مستشعرًا عالي الدقة لقياس درجة الحرارة يعتمد على واجهة 1-Wire® التي تحتاج إلى منفذ واحد فقط للتواصل مع المتحكم الدقيق. يحتوي كل حساس على رقم تسلسلي فريد مكون من 64 بت، مما يسمح بتوصيل عدة حساسات على نفس خط البيانات. يقيس درجات الحرارة ضمن المجال من -55°C إلى +125°C بدقة تصل إلى ±0.5°C ضمن المجال من -10°C إلى +85°C. يعمل بجهد 3.0V إلى 5.5V، ويدعم التغذية من خط البيانات، كما يوفر دقة قابلة للبرمجة من 9 إلى 12 بت، مما يجعله مناسبًا للأنظمة الصناعية والاستهلاكية وتطبيقات مراقبة الحرارة.
The DS18B20 TO-92 is a digital temperature sensor manufactured for accurate and reliable temperature measurement in a wide range of applications. It utilizes the 1-Wire communication protocol, allowing data exchange and optional power delivery through a single data line, significantly reducing wiring complexity.
Each DS18B20 sensor is factory programmed with a unique 64-bit ROM code, enabling multiple sensors to share the same communication bus without address conflicts. The sensor measures temperatures from -55°C to +125°C and provides an accuracy of ±0.5°C over the range of -10°C to +85°C.
The device supports programmable resolution from 9 to 12 bits, allowing designers to balance measurement precision and conversion speed. At 12-bit resolution, the maximum temperature conversion time is 750 ms.
The DS18B20 can operate from a standard power supply ranging from 3.0V to 5.5V or use parasite power mode, where power is supplied directly from the data line. Additional features include nonvolatile alarm thresholds and an alarm search function that simplifies the detection of sensors operating outside user-defined temperature limits.
Its compact TO-92 package makes it suitable for breadboards, PCB designs, and embedded systems used in industrial, commercial, and educational projects.
Specifications
| Parameter | Value |
|---|---|
| Model | DS18B20 |
| Package Type | TO-92 |
| Sensor Type | Digital Temperature Sensor |
| Communication Interface | 1-Wire® |
| Supply Voltage | 3.0V – 5.5V |
| Power Modes | External Supply or Parasite Power |
| Temperature Range | -55°C to +125°C |
| Temperature Accuracy | ±0.5°C (-10°C to +85°C) |
| Resolution | Programmable 9 to 12 bits |
| Conversion Time | 93.75 ms (9-bit) to 750 ms (12-bit max.) |
| Unique Identifier | 64-bit ROM Serial Number |
| Alarm Function | User Programmable Nonvolatile Alarm |
| Alarm Search Command | Supported |
| Bus Capability | Multiple Devices on Single 1-Wire Bus |
| Software Compatibility | Compatible with DS1822 |
Applications
- Digital thermometers
- Thermostatic control systems
- Industrial temperature monitoring
- Consumer electronic products
- Home automation systems
- Weather stations
- HVAC systems
- Battery and power management systems
- Data loggers
- Arduino, Raspberry Pi, and other microcontroller projects
- Temperature monitoring in thermally sensitive systems