The model "HDC1080DMBR" appears to refer to a humidity and temperature sensor produced by Texas Instruments (TI). Specifically, this part number is likely to be associated with a HDC1080 series sensor, which is a highly accurate sensor for measuring humidity and temperature in various applications, particularly for consumer electronics and industrial uses.
Here’s the detailed information for the HDC1080DMBR:
Brand: Texas Instruments (TI)
Package Type:
The HDC1080DMBR is typically packaged in a SMD (Surface-Mount Device) package, specifically in the SOIC-8 package.
Pinout (Pin Functions):
Pin Number Pin Name Pin Function Description 1 VDD Power supply pin. Typically connected to a positive voltage (3.3V or 5V). 2 SCL I2C Clock line (Serial Clock Line). Used for communication via I2C protocol. 3 SDA I2C data line (Serial Data Line). Used for communication via I2C protocol. 4 GND Ground pin. Connects to the system ground. 5 nIRQ Interrupt output pin. It sends a low signal when the sensor’s measurement data is ready or needs attention. 6 VDDIO Supply voltage for I2C interface (typically 3.3V). 7 ADDR Address pin for I2C address selection. 8 RESET Reset pin. Used to reset the sensor to its default state.Detailed Pin Function Descriptions:
VDD (Pin 1): This pin is used to supply the sensor with the required operating voltage. This should typically be a stable 3.3V or 5V, depending on the system's operating voltage. The voltage must be within the acceptable range for proper operation.
SCL (Pin 2): The Serial Clock Line (SCL) is used in I2C communication, which synchronizes the transmission of data between the sensor and the microcontroller.
SDA (Pin 3): The Serial Data Line (SDA) is the data line for I2C communication. It carries the data from the sensor to the microcontroller or vice versa.
GND (Pin 4): Ground is essential for completing the electrical circuit and for the sensor’s operation.
nIRQ (Pin 5): The interrupt request pin is used to alert the microcontroller when the sensor’s measurement is ready. When the sensor is ready, it pulls this pin low. The microcontroller can use this signal to prompt reading of new data.
VDDIO (Pin 6): This pin is the supply voltage for the I2C interface. It’s typically connected to the same voltage as the microcontroller’s I2C bus (commonly 3.3V).
ADDR (Pin 7): This pin allows for selecting the I2C address of the sensor. Typically, you would connect this pin either to GND or VDD to set the address to one of the two predefined I2C addresses.
RESET (Pin 8): The reset pin allows you to force the sensor into its initial state, which can be useful if you need to restart communication or clear any errors.
FAQ (Frequently Asked Questions):
Q: What is the voltage range required for the HDC1080DMBR? A: The HDC1080DMBR requires a supply voltage (VDD) of 2.7V to 3.6V for proper operation. Q: Can I use the HDC1080DMBR with 5V systems? A: No, the HDC1080DMBR is designed to operate with 3.3V systems and should not be used with 5V without additional level shifting components. Q: How do I communicate with the HDC1080DMBR? A: The HDC1080DMBR uses I2C communication protocol via the SCL and SDA pins. Q: What is the typical I2C address of the HDC1080DMBR? A: The I2C address is typically set to 0x40, but it can be configured using the ADDR pin. Q: What should I connect the RESET pin to? A: The RESET pin should be connected to ground to reset the device or left unconnected if not used. Q: How do I handle the nIRQ pin? A: The nIRQ pin is an interrupt output that goes low when the sensor is ready with new data. You can use this to trigger the microcontroller to read the data. Q: What is the maximum data rate for the HDC1080DMBR? A: The maximum data rate for the HDC1080DMBR is 1 Hz, which means you can request new data once every second. Q: How can I set the I2C address for multiple sensors? A: You can set the I2C address by connecting the ADDR pin to either GND or VDD, depending on the desired address. Q: What type of measurements can the HDC1080DMBR take? A: The HDC1080DMBR can measure humidity and temperature.Q: How accurate is the HDC1080DMBR?
A: The HDC1080DMBR has a typical temperature accuracy of ±0.2°C and a humidity accuracy of ±3% RH.Q: Is the HDC1080DMBR suitable for outdoor applications?
A: Yes, the HDC1080DMBR can be used in various environmental conditions, but it should be housed in a weatherproof enclosure if exposed to the elements.Q: What is the power consumption of the HDC1080DMBR?
A: The power consumption is typically very low, around 1.6 µA in low-power mode.Q: Can the HDC1080DMBR work in low-power mode?
A: Yes, the HDC1080DMBR supports low-power modes that can be used to reduce power consumption when the sensor is not actively measuring data.Q: What is the resolution of the temperature and humidity measurements?
A: The temperature resolution is 0.01°C, and the humidity resolution is 0.004% RH.Q: Can I use the HDC1080DMBR without an interrupt (nIRQ)?
A: Yes, the interrupt pin (nIRQ) is optional, and you can poll the sensor periodically for new data if you don't wish to use interrupts.Q: What is the response time of the HDC1080DMBR?
A: The typical response time for the sensor is about 8 ms for temperature and 16 ms for humidity.Q: Is the HDC1080DMBR calibrated?
A: Yes, the HDC1080DMBR is factory calibrated for both temperature and humidity.Q: Can I use the HDC1080DMBR with 1.8V systems?
A: No, the HDC1080DMBR requires at least 2.7V to operate correctly.Q: How do I reset the HDC1080DMBR?
A: You can reset the HDC1080DMBR by pulling the RESET pin low for a short period.Q: What is the output data format of the HDC1080DMBR?
A: The HDC1080DMBR outputs data in a 16-bit format, with the temperature and humidity readings each using 16 bits.This provides a thorough explanation of the pin functions, the packaging, and answers to common queries about the HDC1080DMBR. If you need more detailed specifications or have further questions, feel free to ask!