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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
Featured Videos
This video on the SensorTile.box Pro Mode shows you how to use this IoT and wearable sensor development kit to create customized wireless applications using an STM32Cube function pack. Use-case on a Human Activity Recognition algorithm included.
Watch this short tutorial on the Expert mode of the SensorTile.box to learn how to use a graphical wizard to build programs without having to write any code.
The first video in the SensorTile.box series of short tutorials will guide you through the pre-recorded examples in the device firmware to help you use IoT and wearable sensor applications.
All tools & software
All resources
Product Specifications (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 22 Oct 2015 |
22 Oct 2015
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Application Notes (2)
| Resource title | Latest update | |||
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| 17 Nov 2014 |
17 Nov 2014
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| 28 Feb 2020 |
28 Feb 2020
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Technical Notes & Articles (3)
| Resource title | Latest update | |||
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| 30 Oct 2015 |
30 Oct 2015
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| 28 Feb 2020 |
28 Feb 2020
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| 18 Dec 2014 |
18 Dec 2014
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Application Notes for related Tools & Software (3)
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| 17 Nov 2014 |
17 Nov 2014
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| 18 Jun 2019 |
18 Jun 2019
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| 02 Jul 2020 |
02 Jul 2020
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Brochures (2)
| Resource title | Latest update | |||
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| 27 Mar 2020 |
27 Mar 2020
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| 06 Aug 2020 |
06 Aug 2020
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CAD/EDA Symbols, Footprints and Models
Quality and Reliability
| Part Number | Marketing Status | Package | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|
| HTS221TR |
Active
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HLGA-6L 2X2X0.9 | Ecopack2 |
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HTS221TR
Package:
HLGA-6L 2X2X0.9Material Declaration**:
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Order from Distributors | Order from ST | Marketing Status | ECCN (US) | ECCN (EU) | Packing Type | Package | Temperature (°C) | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||
| HTS221TR | 5 distributors | Free Sample Buy Direct |
Active
|
EAR99 | NEC | Tape And Reel | HLGA-6L 2X2X0.9 | -40 | 120 | MALTA | 1.4 / 1k | |
(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors
