SKU: SENS-3848
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STMicroelectronics HTS221 Humidity & Temperature Sensor, ±3.5% RH, ±0.5°C, I²C/SPI, LGA-6

₹309.00 (Inclusive of all taxes)
Out of Stock

The STMicroelectronics HTS221 is a factory-calibrated digital humidity and temperature sensor in an ultra-compact LGA-6 package. It provides high-accuracy environmental data via I²C or SPI interfaces, making it ideal for integration into IoT devices, wearables, and industrial monitoring systems with 1.7V to 3.6V logic.

Features

  • High-Accuracy Sensing: Delivers ±3.5% RH humidity and ±0.5°C temperature accuracy for reliable environmental monitoring.
  • Ultra-Low Power Operation: Consumes only 2 µA at a 1 Hz output data rate, optimized for battery-powered applications.
  • Dual Digital Interface: Supports both I²C and SPI communication protocols for flexible system integration.
  • Factory Calibrated: Provides calibrated 16-bit digital output, eliminating the need for user-side calibration.
  • Miniature Footprint: Housed in a compact 2×2×0.9 mm HLGA package suitable for space-constrained designs.

Out of stock

Description

The HTS221 sensor integrates a dedicated capacitive polymer sensing element for humidity and a band-gap sensor for temperature, coupled with a mixed-signal ASIC for signal conditioning and digitization. This architecture ensures stable, high-resolution measurements across a broad operating range from -40°C to +120°C.

Designed for low-power embedded systems, the sensor features selectable output data rates from 1 Hz to 12.5 Hz, allowing for power consumption optimization based on application requirements. Its fully calibrated digital output simplifies design-in, providing immediate access to accurate relative humidity and temperature data without additional signal processing.

Key Features

  • Precise capacitive humidity sensing with 0.004% RH/LSB sensitivity.
  • Integrated temperature sensor with 0.016°C/LSB resolution.
  • Wide supply voltage range from 1.7V to 3.6V for compatibility with various microcontrollers.
  • Embedded 16-bit ADC for high-resolution digital data conversion.
  • Fast response times: 10 seconds for humidity and 15 seconds for temperature.
  • ECOPACK compliant, lead-free package supporting environmentally conscious designs.
  • Robust performance across the full humidity range of 0 to 100% RH.

Applications

  • Smart Thermostats and HVAC Control Systems for precise indoor climate management.
  • Wearable Health and Fitness Monitors tracking environmental conditions affecting user comfort.
  • Industrial IoT Gateways and Data Loggers for remote environmental condition monitoring.
  • Asset Tracking and Logistics ensuring products are transported within specified temperature/humidity thresholds.
  • Portable Weather Stations and Consumer Electronics requiring compact, accurate environmental sensing.

Technical Specifications

Sensor TypeHumidity & Temperature Sensor
Manufacturer Part NumberHTS221
Humidity Range0 to 100% RH
Humidity Accuracy±3.5% RH (20 to 80% RH)
Humidity Sensitivity0.004 %RH/LSB
Temperature Range-40°C to +120°C
Temperature Accuracy±0.5°C (15 to 40°C)
Temperature Sensitivity0.016 °C/LSB
Supply Voltage1.7V to 3.6V
Power Consumption2 µA @ 1 Hz ODR
Output Data Rate (ODR)1 Hz to 12.5 Hz
Output InterfaceI²C, SPI
ADC Resolution16-bit
Response Time (Humidity)10 s
Response Time (Temperature)15 s
Package TypeHLGA (LGA-6)
Package Dimensions2 × 2 × 0.9 mm
ComplianceECOPACK

Frequently Asked Questions

What is the operating voltage range for the HTS221 sensor?

The HTS221 operates from a supply voltage of 1.7V to 3.6V DC. This wide range makes it directly compatible with common 3.3V microcontroller systems and low-voltage battery-powered applications without requiring a level shifter.

Does the HTS221 require manual calibration?

No, the HTS221 is factory calibrated. The sensor outputs fully calibrated 16-bit digital values for both humidity and temperature, eliminating the need for user-side calibration and simplifying integration into your design.

How do I communicate with the HTS221 sensor?

The sensor supports both I²C and SPI digital communication protocols. You can select the interface via hardware configuration. The default I²C address is 0x5F, and the SPI interface supports 3-wire and 4-wire modes for flexible connection to hosts like Arduino, Raspberry Pi, or STM32.

What is the power consumption of the HTS221?

Power consumption is extremely low, typically 2 µA when operating at a 1 Hz output data rate. The ODR is configurable from 1 Hz to 12.5 Hz, allowing you to balance measurement frequency and power draw for battery life optimization.

What is the physical size and package of the HTS221?

The sensor is housed in an ultra-compact HLGA (LGA-6) package measuring just 2.0 mm x 2.0 mm x 0.9 mm. This miniature footprint is designed for high-density PCB layouts in space-constrained applications like smart watches and mobile devices.

Package Includes

  • 1 x STMicroelectronics HTS221 Humidity & Temperature Sensor (LGA-6)

Additional Information

Weight 0.005 kg
Dimensions 0.2 × 0.2 × 0.2 cm