Overview
The HDC2080DMBT from Texas Instruments is a highly integrated digital humidity and temperature sensor designed for high accuracy measurements with very low power consumption. This device is encapsulated in a small 6-pin WSON package, making it ideal for applications where space is critical. The HDC2080 incorporates both humidity and temperature sensing elements, an analog-to-digital converter, calibration memory, and an I2C interface. It is particularly suited for environmental monitoring and Internet of Things (IoT) applications such as smart thermostats, smart home assistants, and other battery-operated systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Relative Humidity Range | 0% to 100% | %RH |
| Humidity Accuracy | ±2% (typical), ±3% (maximum) | %RH |
| Temperature Accuracy | ±0.2°C (typical), ±0.4°C (maximum) | °C |
| Operating Temperature Range | –40°C to 85°C | °C |
| Functional Temperature Range | –40°C to 125°C | °C |
| Supply Voltage Range | 1.62 V to 3.6 V | V |
| Sleep Mode Current | 50 nA (typical), 100 nA (maximum) | nA |
| Average Supply Current (1 measurement/second) | 300 nA: RH% only (11 bit), 550 nA: RH% (11 bit) + temperature (11 bit) | nA |
| Package Type | WSON (DMB) 6 pins | |
| Package Size | 3.00 mm × 3.00 mm | mm |
| I2C Interface Compatibility | Yes |
Key Features
- High accuracy measurements for relative humidity and temperature.
- Very low power consumption, with a typical sleep mode current of 50 nA.
- Programmable interrupt thresholds to provide alerts and system wake-ups without continuous microcontroller monitoring.
- Programmable sampling intervals and auto measurement mode to optimize power consumption.
- Integrated heating element to prevent or remove condensation in high humidity environments.
- Support for a 1.8-V supply voltage, making it suitable for battery-operated systems.
- I2C interface compatibility for easy communication with microcontrollers.
- Factory-calibrated to ensure high accuracy for both temperature and humidity measurements.
Applications
- Smart thermostats and smart home assistants.
- Washer/dryers and HVAC systems.
- Inkjet printers.
- Environmental monitoring and Internet of Things (IoT) applications.
- Battery-operated systems where power budget is critical.
Q & A
- What is the relative humidity range of the HDC2080?
The relative humidity range of the HDC2080 is from 0% to 100% RH.
- What is the typical humidity accuracy of the HDC2080?
The typical humidity accuracy is ±2% RH, with a maximum accuracy of ±3% RH.
- What is the operating temperature range of the HDC2080?
The operating temperature range is from –40°C to 85°C, with a functional range from –40°C to 125°C.
- What is the supply voltage range for the HDC2080?
The supply voltage range is from 1.62 V to 3.6 V.
- Does the HDC2080 support auto measurement mode?
Yes, the HDC2080 supports auto measurement mode, allowing it to initiate measurements periodically without the need for microcontroller intervention.
- What is the typical sleep mode current of the HDC2080?
The typical sleep mode current is 50 nA, with a maximum of 100 nA.
- Is the HDC2080 compatible with I2C interface?
Yes, the HDC2080 is compatible with the I2C interface.
- What is the purpose of the integrated heating element in the HDC2080?
The integrated heating element is used to prevent or remove condensation in high humidity environments and to verify the functionality of the temperature sensor.
- Can the HDC2080 be used in battery-operated systems?
Yes, the HDC2080 is designed for battery-operated systems due to its low power consumption and support for a 1.8-V supply voltage.
- What are some common applications of the HDC2080?
Common applications include smart thermostats, smart home assistants, washer/dryers, HVAC systems, and environmental monitoring.
