Overview
The DS18B20+TCNH, produced by Analog Devices Inc./Maxim Integrated, is a highly versatile and accurate digital temperature sensor. It is part of the DS18B20 series, known for its single-bus interface and low power consumption. This sensor is designed to provide precise temperature measurements with a built-in 12-bit analog-to-digital converter (ADC) and can be easily integrated with microcontrollers such as Arduino.
The DS18B20+TCNH features a unique 64-bit serial code, allowing multiple sensors to be connected on the same 1-Wire bus, making it ideal for multi-point temperature measurement applications. It operates over a wide temperature range of -55°C to 125°C and offers high accuracy, particularly within the range of -10°C to 85°C, where it maintains an accuracy of ±0.5°C.
Key Specifications
| Specification | Value |
|---|---|
| Temperature Range | -55°C to 125°C |
| Accuracy | ±0.5°C (-10°C to 85°C) |
| Resolution | 9-bit to 12-bit |
| Communication Interface | 1-Wire bus |
| Power Supply | Parasite power from data line or external power |
| Unique Identifier | 64-bit serial code |
| Alarm Function | Nonvolatile user-programmable upper and lower trigger points |
| Query Time |
Key Features
- Single-Wire Interface: Communicates over a 1-Wire bus, requiring only one data line and ground for communication and power supply.
- High Accuracy: Provides temperature measurements with an accuracy of ±0.5°C within the range of -10°C to 85°C.
- Unique Hardware Address: Each sensor has a unique 64-bit hardware address, enabling multiple sensors to be connected on the same bus.
- Digital Output: Outputs digital temperature values, eliminating the need for analog signal conversion.
- Alarm Function: Features nonvolatile user-programmable upper and lower trigger points for temperature alarms.
- Multi-Point Measurement: Allows multiple sensors to be connected for multi-point temperature measurement.
- Low Power Consumption: Can derive power directly from the data line, reducing the need for an external power supply.
Applications
- HVAC and Environmental Controls: Ideal for temperature monitoring in heating, ventilation, and air conditioning systems.
- Industrial Process Monitoring: Suitable for monitoring temperatures in industrial processes and equipment.
- Building Automation: Used in temperature monitoring systems inside buildings and machinery.
- Weather Stations and IoT Projects: Can be integrated into weather stations and various IoT projects requiring precise temperature measurements.
- Medical and Scientific Equipment: Applied in medical and scientific devices where accurate temperature monitoring is crucial.
Q & A
- What is the temperature range of the DS18B20+TCNH?
The DS18B20+TCNH operates over a temperature range of -55°C to 125°C.
- What is the accuracy of the DS18B20+TCNH?
The sensor has an accuracy of ±0.5°C within the range of -10°C to 85°C.
- How does the DS18B20+TCNH communicate?
The DS18B20+TCNH communicates over a 1-Wire bus, requiring only one data line and ground.
- Can the DS18B20+TCNH be powered from the data line?
- How many sensors can be connected on the same bus?
Multiple DS18B20+TCNH sensors can be connected on the same 1-Wire bus due to their unique 64-bit serial codes.
- What is the resolution of the DS18B20+TCNH?
The sensor provides 9-bit to 12-bit Celsius temperature measurements.
- Does the DS18B20+TCNH have an alarm function?
- How long does it take to query the temperature?
The query time is less than 750 milliseconds.
- Can the DS18B20+TCNH be used in wet or damp conditions?
- What libraries are needed to use the DS18B20+TCNH with an Arduino?
The OneWire and DallasTemperature libraries are required to use the DS18B20+TCNH with an Arduino.
