HTS221：Capacitive digital sensor for relative humidity and temperature
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.
Key Features
- 0 to 100% relative humidity range
- Supply voltage: 1.7 to 3.6 V
- Low power consumption: 2 μA @ 1 Hz ODR
- Selectable ODR from 1 Hz to 12.5 Hz
- High rH sensitivity: 0.004% rH/LSB
- Humidity accuracy: ± 3.5% rH, 20 to +80% rH
- Temperature accuracy: ± 0.5 °C,15 to +40 °C
- Embedded 16-bit ADC
- 16-bit humidity and temperature output data
- SPI and I²C interfaces
- Factory calibrated
- Tiny 2 x 2 x 0.9 mm package
- ECOPACK®
compliant
Product Specifications
Application Notes
Technical Notes & Articles
STM32 Open Development Environment
| Part Number | Manufacturer | Description |
|---|
| X-NUCLEO-IKS01A1 | ST | Motion MEMS and environmental sensor expansion board for STM32 Nucleo |
| X-NUCLEO-IKS01A2 | ST | Motion MEMS and environmental sensor expansion board for STM32 Nucleo |
MEMS and Sensors Software
| Part Number | Manufacturer | Description |
|---|
| STSW-MEMS035 | ST | Platform-independent device driver for HTS221 |
Product Evaluation Tools
| Part Number | Manufacturer | Description |
|---|
| STEVAL-MKI141V2 | | HTS221 humidity sensor adapter board for standard DIL24 socket (full pinout) |
Solution Evaluation Tools
| Part Number | Manufacturer | Description |
|---|
| STEVAL-IDI001V1 | ST | A premium developer's tool for sensor hub applications |
| STEVAL-IDI003V2 | ST | Multi-sensor RF platform sensors board |
Sample & Buy
| Part Number | Quantity | Unit Price (US$)
* | Package | Packing Type | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | ECCN (EU) | ECCN (US) | Country of Origin |
|---|
| HTS221TR | 1000 | 1.4 | HLGA-6L 2X2X0.9 | Tape And Reel | -40 | 120 | NEC | EAR99 | - |
Quality & Reliability
