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HTS221

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Capacitive digital sensor for relative humidity and temperature

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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.

  • All 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
    Read more Read less

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All resources

Expand all categories
Resource title
Latest update

Product Specifications (1)

Resource title
Latest update
DS10329 Capacitive digital sensor for relative humidity and temperature 4.0
09 Apr 2020
09 Apr 2020
DS10329 Capacitive digital sensor for relative humidity and temperature 4.0

Application Notes (2)

Resource title
Latest update
AN4503 Environmental sensors: Hardware abstraction layer for Android 3.0
19 Mar 2021
19 Mar 2021
AN4503 Environmental sensors: Hardware abstraction layer for Android 3.0
AN4722 HTS221 digital humidity sensor: hardware guidelines for system integration 1.0
19 Mar 2021
19 Mar 2021
AN4722 HTS221 digital humidity sensor: hardware guidelines for system integration 1.0

Technical Notes & Articles (3)

Resource title
Latest update
TN1219 HTS221 digital humidity sensor: reference design implementation 2.0
19 Mar 2021
19 Mar 2021
TN1219 HTS221 digital humidity sensor: reference design implementation 2.0
TN1218 Interpreting humidity and temperature readings in the HTS221 digital humidity sensor 4.0
19 Mar 2021
19 Mar 2021
TN1218 Interpreting humidity and temperature readings in the HTS221 digital humidity sensor 4.0
TN1198 Surface mount guidelines for MEMS sensors in HLGA packages 1.0
19 Mar 2021
19 Mar 2021
TN1198 Surface mount guidelines for MEMS sensors in HLGA packages 1.0

Design Notes & Tips (1)

Resource title
Latest update
DT0141 How to import STMems_Standard_C_drivers in an STM32CubeIDE project 1.0
10 Mar 2021
10 Mar 2021
DT0141 How to import STMems_Standard_C_drivers in an STM32CubeIDE project 1.0

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Latest update
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AN5353 How to use a sensor on a DIL 24 socket in X-CUBE-MEMS1 package applications 2.0
24 Mar 2021
24 Mar 2021
AN5353 How to use a sensor on a DIL 24 socket in X-CUBE-MEMS1 package applications 2.0
AN5508 Social Distancing Detection using Bluetooth® Low Energy 1.1
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Brochures (3)

Resource title
Latest update
MEMS and Sensors Quick Reference Guide 2.0
07 Apr 2021
07 Apr 2021
MEMS and Sensors Quick Reference Guide 2.0
MEMS and Sensors Smart Motion tracking, IoT for an enhanced user experience 2.1
06 Aug 2020
06 Aug 2020
MEMS and Sensors Smart Motion tracking, IoT for an enhanced user experience 2.1
ST's Condition Monitoring Solutions brochure 01.21
19 Mar 2021
19 Mar 2021
ST's Condition Monitoring Solutions brochure 01.21

EDA Symbols, Footprints and 3D Models

STMicroelectronics - HTS221

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Quality and Reliability

Part Number Marketing Status Package RoHS Compliance Grade Material Declaration**
HTS221TR
Active
HLGA-6L 2X2X0.9 Ecopack2

HTS221TR

Package:

HLGA-6L 2X2X0.9

Material Declaration**:

More Info

Marketing Status

Active

Package

HLGA-6L 2X2X0.9

RoHS Compliance Grade

Ecopack2

(**) 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
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Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
HTS221TR Available at 1 distributors

Distributor availability ofHTS221TR

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 7660 1 Order Now

Distributor reported inventory date: 2021-04-06

Distributor Name

RS COMPONENTS

Stock

7660

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-06

Active
EAR99 NEC Tape And Reel HLGA-6L 2X2X0.9 -40 120 MALTA 1.4 / 1k

HTS221TR

Marketing Status

Active

ECCN (US)

EAR99
More Info

Budgetary Price (US$)*/Qty

1.4 / 1k

Distributor availability ofHTS221TR

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 7660 1 Order Now

Distributor reported inventory date: 2021-04-06

Distributor Name

RS COMPONENTS

Stock

7660

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-06

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

HLGA-6L 2X2X0.9

Operating Temperature (°C)

(min)

-40

(max)

120

Budgetary Price (US$)* / Qty

1.4 / 1k

Country of Origin

MALTA

(*) 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