Overview
The DS18B20+T&R is a digital temperature sensor produced by Maxim Integrated, now part of Analog Devices Inc. This sensor provides high-accuracy temperature measurements and communicates over a 1-Wire bus, making it a reliable and cost-effective solution for various temperature monitoring applications. It offers a wide temperature measurement range and is known for its versatility and ease of integration with microcontrollers.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Maxim Integrated (Analog Devices Inc.) |
| Operating Voltage | 3V to 5.5V |
| Operating Temperature Range | -55°C to +125°C |
| Resolution | 9-bit to 12-bit (programmable) |
| Accuracy | ±0.5°C (typical) in the -10°C to +85°C range |
| Sensing Temperature Range | -55°C to +125°C |
| Conversion Time | 94ms (9-bit), 188ms (10-bit), 375ms (11-bit), or 750ms (12-bit) |
| Package | TO-92, 8-pin SOIC |
| Communication Interface | 1-Wire |
| Power Mode | Parasitic power capability |
| Unique Address | 64-bit serial code stored in onboard ROM |
Key Features
- Highly accurate and stable temperature measurements with an accuracy of ±0.5°C in the -10°C to +85°C range.
- Programmable resolution from 9 to 12 bits, allowing for adjustable precision based on application needs.
- Alarm function with non-volatile user-programmable upper and lower trigger points for temperature monitoring.
- Unique 1-Wire interface that requires only one digital pin for communication, making it easy to integrate with microcontrollers.
- Parasitic power mode, which allows the sensor to operate without an external power supply by deriving power from the data line.
- Low power consumption, suitable for battery-powered applications.
- Wide operating temperature range of -55°C to +125°C.
- RoHS3 compliant and available in tape and reel packaging for automated assembly.
Applications
- Industrial and commercial temperature monitoring.
- Consumer electronics.
- Heating, ventilation, and air conditioning (HVAC) systems.
- Automotive and transportation applications.
- Medical and scientific instrumentation.
- Temperature monitoring in hard environments such as chemical solutions, mines, or soil.
- Liquid temperature measurement.
- Applications requiring temperature measurement at multiple points.
Q & A
- What is the operating voltage range of the DS18B20+T&R?
The operating voltage range is 3V to 5.5V.
- What is the temperature measurement range of the DS18B20+T&R?
The temperature measurement range is -55°C to +125°C.
- What is the resolution of the DS18B20+T&R?
The resolution is programmable from 9 to 12 bits.
- How accurate is the DS18B20+T&R?
The accuracy is ±0.5°C in the -10°C to +85°C range.
- What communication interface does the DS18B20+T&R use?
The DS18B20+T&R uses a 1-Wire interface.
- Can the DS18B20+T&R operate without an external power supply?
- What is the conversion time for the DS18B20+T&R?
The conversion time is user-selectable: 94ms (9-bit), 188ms (10-bit), 375ms (11-bit), or 750ms (12-bit).
- Is the DS18B20+T&R RoHS compliant?
- What are some common applications of the DS18B20+T&R?
- How many DS18B20+T&R devices can be connected to a single microcontroller?
