HTS221TR

Product Overview

The HTS221TR belongs to the category of environmental sensors and is specifically designed for measuring relative humidity and temperature. This sensor is commonly used in various applications such as weather stations, HVAC systems, and industrial automation. The HTS221TR is known for its high accuracy, low power consumption, and small package size. It is typically available in a surface-mount package and is essential for monitoring and controlling environmental conditions.

Package and Quantity

The HTS221TR is packaged in a compact and durable surface-mount package, making it suitable for integration into various electronic devices. It is often available in reels containing multiple units, providing convenience for mass production and assembly processes.

Specifications

• Humidity Measurement Range: 0 to 100% RH
• Temperature Measurement Range: -40°C to 125°C
• Accuracy: ±3.5% RH, ±0.5°C
• Supply Voltage: 1.7V to 3.6V
• Low Power Consumption: 2 µA average in active mode
• Interface: I2C or SPI

Detailed Pin Configuration

The HTS221TR features a standard pin configuration with specific pins dedicated to power supply, communication interface, and sensor output. The detailed pinout is as follows:

| Pin Name | Function | |----------|----------------| | VDD | Power Supply | | GND | Ground | | SDA | I2C Data Line | | SCL | I2C Clock Line | | DRDY | Data Ready |

Functional Features

• High Accuracy: The HTS221TR offers precise measurement of relative humidity and temperature, ensuring reliable environmental monitoring.
• Low Power Consumption: With an average current consumption of 2 µA in active mode, the sensor is energy-efficient and suitable for battery-powered applications.
• Compact Size: The small form factor of the HTS221TR enables seamless integration into space-constrained designs.

Advantages and Disadvantages

Advantages

• Accurate and reliable measurements
• Low power consumption
• Compact and surface-mount package

Disadvantages

• Limited temperature range compared to some alternative models
• Sensitivity to contaminants in certain environments

Working Principles

The HTS221TR utilizes a capacitive sensing element to measure relative humidity, while a built-in temperature sensor provides accurate temperature readings. The sensor's internal circuitry processes the capacitance changes and temperature data to provide digital outputs via the I2C or SPI interface.

Detailed Application Field Plans

The HTS221TR finds extensive use in various applications, including: - Weather stations for monitoring local climate conditions - HVAC systems for maintaining optimal indoor air quality - Industrial automation for controlling environmental parameters in manufacturing facilities

Detailed and Complete Alternative Models

Some alternative models to the HTS221TR include: - SHT31: Offers a wider temperature range and enhanced resistance to contaminants - BME280: Provides additional pressure sensing capabilities along with humidity and temperature measurements - HDC2080: Features ultra-low power consumption and high accuracy for demanding applications

In conclusion, the HTS221TR is a versatile environmental sensor that excels in providing accurate and reliable measurements of relative humidity and temperature. Its compact size, low power consumption, and high accuracy make it an ideal choice for a wide range of applications.

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