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HTU21D

Name: HTU21D
Rating: 4.7 (12 reviews)

Board Mount Humidity Sensors I.C 21DF RH/T DIGITAL MODULE

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資料表 HTU21D DataSheet
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規格

Packaging	MouseReel
Standard Pack Qty	400

概述

Description

The HTU21D is a digital humidity and temperature sensor developed by TE Connectivity. It provides precise measurements of relative humidity (RH) and temperature, making it suitable for various applications such as environmental monitoring, HVAC systems, and consumer electronics. The sensor operates on the I2C communication protocol, allowing easy integration with microcontrollers and other devices.
The HTU21D features a small form factor, low power consumption, and a wide operating range, with humidity measurements spanning from 0% to 100% RH and temperature measurements from -40°C to 125°C. Its accuracy is typically ±2% RH and ±0.3°C, ensuring reliable data for various applications. The device is designed to be robust and reliable, with a built-in heater to mitigate the effects of condensation.
Overall, the HTU21D is a compact, efficient, and user-friendly sensor ideal for projects requiring accurate environmental data.

Features

The HTU21D is a digital humidity and temperature sensor designed for high precision and low power consumption. Key features include:
1. Measurement Range: Humidity: 0 to 100% RH; Temperature: -40 to 125°C.
2. Accuracy: Humidity ±2% RH (typical); Temperature ±0.3°C (typical).
3. Resolution: 14-bit humidity and temperature readings.
4. I2C Interface: Easy integration with microcontrollers and other devices.
5. Low Power Consumption: Ideal for battery-operated devices with low standby current.
6. Fast Response Time: Quick measurement with a typical response time of 10 seconds.
7. Compact Size: Small footprint suitable for space-constrained applications.
8. Calibration: Factory-calibrated, ensuring reliable performance without the need for user calibration.
Overall, the HTU21D is widely used in HVAC, weather stations, and environmental monitoring applications due to its accuracy, ease of use, and robust performance.

Package

The HTU21D sensor is typically packaged in a compact 4-pin LGA (Land Grid Array) format. This surface-mount package allows for easy integration into various electronic systems while maintaining a small footprint, making it suitable for applications requiring humidity and temperature sensing.

Pinout

The HTU21D is a digital humidity and temperature sensor that communicates via the I²C interface. It has a total of 6 pins, which are:
1. VCC (Pin 1) - Power supply (1.5V to 3.6V).
2. GND (Pin 2) - Ground.
3. SDA (Pin 3) - Serial Data Line for I²C communication.
4. SCL (Pin 4) - Serial Clock Line for I²C communication.
5. NC (Pin 5) - No Connect, not used.
6. NC (Pin 6) - No Connect, not used.
The HTU21D provides high-accuracy measurements of relative humidity (±2% RH) and temperature (±0.3°C). It is designed for applications in environmental monitoring, HVAC systems, and other projects requiring precise humidity and temperature data.

Manufacturer

The HTU21D is manufactured by TE Connectivity, a global technology company that specializes in connectivity and sensor solutions. TE Connectivity designs and manufactures components and systems that are used in a wide range of applications, including automotive, industrial, telecommunications, and consumer electronics. The company is known for its expertise in advanced sensors, which includes temperature and humidity sensors like the HTU21D. TE Connectivity operates in various sectors, providing innovative solutions that enhance efficiency, reliability, and performance in numerous industries.

Application

The HTU21D is a digital humidity and temperature sensor commonly used in various applications, including HVAC systems, environmental monitoring, weather stations, and smart home devices. It also finds use in industrial automation, agricultural systems for crop management, and consumer electronics for improved user comfort. Its compact size and high accuracy make it suitable for portable devices and IoT applications as well.

Equivalent

Equivalent products to the HTU21D chip include the SHT21, SHT30, and SHT31 from Sensirion, as well as the AM2302 (DHT22) and BME280 from Bosch for temperature and humidity sensing. These alternatives offer similar functionalities but may differ in accuracy, response time, and communication protocols.