HTS221
Ultra-compact humidity and temperature sensor with digital output for environmental monitoring applications.
Product Overview
Description
The HTS221 is an ultra-compact sensor for relative humidity and temperature. It includes a sensing element and a mixed signal ASIC to provide the measurement information through digital serial interfaces.
The sensing element consists of a polymer dielectric planar capacitor structure capable of detecting relative humidity variations and is manufactured using a dedicated ST process.
The HTS221 is available in a small top-holed cap land grid array (HLGA) package guaranteed to operate over a temperature range from -40 °C to +120 °C.
With its factory calibration and embedded compensation algorithms, the HTS221 provides accurate and stable measurements without requiring customer calibration.
Product Series
Primary Application
Key Features
- Factory calibrated, no customer calibration needed
- Ultra-compact 2x2x0.9 mm package
- Low power consumption
- 16-bit humidity and temperature output
- Embedded FIFO for burst readings
- One-shot and continuous conversion modes
Specifications
| Humidity Range | 0% to 100% RH |
|---|---|
| Humidity Accuracy | ±3.5% RH (20-80% RH) |
| Temperature Range | -40°C to +120°C |
| Temperature Accuracy | ±0.5°C (15-40°C) |
| Interface | I2C/SPI |
| Operating Current | 2 μA (one-shot) |
| Package | HLGA-6L (2x2x0.9 mm) |
| Operating Temperature | -40°C to +120°C |
| Qualification | Industrial |
| Supply Voltage | 1.7V to 3.6V |
| Accelerometer Range | N/A |
| Gyroscope Range | N/A |
| Accelerometer ODR | N/A |
| Gyroscope ODR | N/A |
| Current (Combo) | N/A |
| Current (Accel Only) | N/A |
| Pressure Range | N/A |
| Pressure Resolution | N/A |
| Absolute Accuracy | N/A |
| ODR Range | N/A |
| Current (Low) | N/A |
| Current (High) | N/A |
| Voltage Rating | N/A |
| Current Rating | N/A |
| Measurement Range | N/A |
| Sensitivity | N/A |
| Operating Voltage | N/A |
| Output Data Rate | N/A |
Applications
HVAC systems and climate control
Industrial application for Capacitive Digital Humidity and Temperature Sensor
Smart home and building automation
Industrial application for Capacitive Digital Humidity and Temperature Sensor
Industrial process control
Industrial application for Capacitive Digital Humidity and Temperature Sensor
Weather stations
Industrial application for Capacitive Digital Humidity and Temperature Sensor
Food storage monitoring
Industrial application for Capacitive Digital Humidity and Temperature Sensor
Medical equipment
Industrial application for Capacitive Digital Humidity and Temperature Sensor
FAE Expert Insights
"The HTS221 is an excellent choice for environmental monitoring applications requiring both humidity and temperature measurements. The factory calibration eliminates the need for customer calibration, saving development time and cost. The tiny 2x2mm package is perfect for space-constrained designs. I have successfully used this sensor in HVAC controllers, smart thermostats, and weather monitoring stations."
Factory-calibrated ultra-compact humidity and temperature sensor
— Jennifer Wu, BeiLuo
Frequently Asked Questions
What are the key specifications and features of HTS221?
The HTS221 is a high-performance component designed for Sensors applications. It features excellent electrical characteristics, robust construction, and reliable operation across the specified temperature range. Please refer to the datasheet for detailed specifications.
Review the datasheet for detailed specifications. Contact FAE for application-specific guidance.
How do I properly use HTS221 in my design?
For optimal performance with HTS221: 1) Follow the recommended PCB layout guidelines in the datasheet, 2) Ensure proper power supply decoupling and filtering, 3) Consider thermal management requirements, 4) Implement appropriate protection circuits, 5) Validate the design under all operating conditions. Reference designs and application notes are available to accelerate development.
Start with reference designs. Contact FAE for design review and optimization support.
How does HTS221 compare to competitive solutions?
The HTS221 offers competitive advantages including high quality, reliable performance, and excellent price-performance ratio. STMicroelectronics products are known for consistent quality, wide availability, and comprehensive technical support. Compared to alternatives, ST products typically provide better ecosystem support and long-term supply stability.
Evaluate based on your specific requirements for performance, cost, and support. Request samples for direct comparison.
What are the typical applications for HTS221?
The HTS221 is designed for Sensors applications in industrial control, automotive systems, consumer electronics, and IoT devices. Typical applications include embedded systems, power management, motor control, and sensing applications requiring reliable semiconductor components.
Ideal for Sensors applications. Verify specifications match your requirements.
What is the lead time, MOQ, and availability for HTS221?
Standard lead time for HTS221 is 8-12 weeks for production orders. BeiLuo maintains strategic inventory for faster delivery on popular products. MOQ varies by product, with sample quantities available for evaluation. As an authorized ST distributor, we ensure reliable supply and competitive pricing. Contact sales for current stock status.
Contact sales for current lead times and availability. Plan for standard production lead times.