The DS18B20 digital temperature sensor provides 9-bit to 12-bit celsius temperature measurements and has an alarm function with nonvolatile user-programmable upper and lower trigger points. The DS18B20 communicates over a 1-wire bus that by definition requires only one data line(and ground) for communication with a central microprocessor. It has an operating temperature range of -55ºC to +125ºC and is accurate to ±0.5ºC over the range of -10ºC to +85ºC.
GND is a ground pin.
DQ is 1-Wire Data Bus should be connected to a digital pin on microcontroller.
VDD pin supplies power for the sensor which can be between 3.3 to 5V.
| Typical Applications |
Features |
| • Heat systems |
• Unique 1-Wire® Interface Requires Only One Port Pin for Communication |
| • Measuring Instruments |
• Measures Temperatures from -55°C to +125°C (-67°F to +257°F) |
| • Washing machines |
• ±0.5°C Accuracy from -10°C to +85°C |
| • Over-heating protection |
• Programmable Resolution from 9 Bits to 12 Bits |
| |
• Each Device Has a Unique 64-Bit Serial Code Stored in On-Board ROM |
Technical Data
| Item |
Specification |
| Power supply |
3.0~5.5V |
| Sensor |
DS18B20 |
| Measurement range |
-55ºC ~ +125ºC |
| Accuracy |
±0.5ºC (from -10ºC ~ +85ºC) |
| ±2ºC (from -55ºC ~ +125ºC) |
| Work current |
1.5mA |
| Standby current |
1μA |
| Output pin sink current |
4mA (@ VI/O=0.4V) |
| Response time |
in 750 ms. (Coverts temperature to 12-bit digital word) |
| Output |
Open-drain 1-wire interface pin. |
| Drift |
±0.2ºC on a 1000h stress test at 125ºC with VDD=5.5V |
| Wire |
24AWG/ 26AWG/ Double line wire/ Silicon round jacket/ PTFE/ Fiberglass |
Applications
About us
Focusens are Chinese Sensor Expert that have more than 15 years manufacturing experience. We are committed to provide high quality thermal Components NTC thermistors, PTC thermistors, NTC sensors, PT100 PT1000 RTD sensors ,thermocouples, silicon liner PTC sensors as well as digital sensors.
Our activities covers all over the world. Key players like Bosch, Schneider Samsung as well as Chinese manufacturers like Galanz, Medtronic, Mindray, BYD etc. are among our clients list.
Flexible custom design and prompt delivery are our always advantages. Meanwhile we accept OEM on customers design.
Contact us now for details and improve projects efficiency with our expertise!
All parameters can be customized. Please see below information for your reference, tell us your detailed requirements.
Part A: Sensing Elements
| Item |
Specification |
| Thermistor |
NTC, PTC |
| RTD series |
PT10, PT20, PT100, PT200, PT500, PT1000 |
| Digital series |
DS18B20, STS35, TMP117 etc. |
| Analog series |
LM35 |
Part B: Housings
Part C: Wires
| Item |
Specification |
| AWG |
18, 20, 22, 24, 28 etc. |
| Material |
PVC, Teflon, Silicone, Fiberglass |
| Outer diameter |
2.5mm, 3.0mm, 3.2mm, 4.0mm, 5.0mm, 6.0mm |
Part D: Connectors
What Focusens can provide you:
1. Stable supply capacity. With near 10 years manufacturing experience, over 7 years export experience, Focusens promise you a guaranteed quality, quantity and lead time.
2. Quick products iteration. Focusens possesses multiple production lines, therefore whatever your requirements are, a quickly respond can be provided.
3. Efficient service. Your request will be responded no more than 12 hours.
Certifications
Related Products
FAQ
1. How can I get samples?
Discuss to one of our sales, tell him or her your requirements. After confirmed details, we will arrange samples production. Customer need to pay for shipping cost. (Check with sales whether your samples can be free)
2. When can I receive samples?
Normally it takes 15-30 days to produce samples.
3. How to pay?
We accept Telegraphic Transfer and Trade Assurance. Negotiate with sales if you have questions.
4. Do you accept customized?
Yes, we accept ODM&OEM. Products can be customised upon customer's requirements.
5. How long is your lead time?
Generally, 2-3 weeks for regular products. Sometimes, it needs more time to prepare materials and do more tests to ensure products' accuracy.
Welcome to contact us for much more details!
Focus Sensing and Control Technology Co.,LTD
Account Manager
Rick wei
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