ST1VAFE6AX

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Product overview

Description

The ST1VAFE6AX is a biosensor embedding a vAFE channel to detect biopotential signals and a 6-axis IMU featuring a high-performance 3-axis digital accelerometer and 3-axis digital gyroscope for motion tracking.

The device embeds advanced dedicated features and data processing for motion processing like the finite state machine (FSM), sensor fusion low power (SFLP), adaptive self-configuration (ASC), and machine learning core (MLC) with exportable AI features/filters.

The ST1VAFE6AX is available in a small plastic, land grid array (LGA) package of 2.5 x 3.0 x 0.71 mm to address ultracompact solutions.

All features
Dual channels for biopotential signal detection and motion tracking

Biopotential signal detection channel with analog hub

Single-ended or differential input amplifier (vAFE) channel

Digital notch filter to reduce powerline noise (50/60 Hz)

ODR fixed at 240 Hz

Biopotential and motion signals fully synchronized for context-aware analysis

Programmable finite state machine for accelerometer, gyroscope, and vAFE data processing with high rate @960 Hz

Machine learning core with exportable features and filters for AI applications

“Always-on" experience with low power consumption

Smart FIFO up to 4.5 KB

±2/±4/±8/±16 g full scale

±125/±250/±500/±1000/±2000/±4000 dps full scale
SPI / I²C & MIPI I3C^® v1.1 serial interface with main processor data synchronization

Embedded adaptive self-configuration (ASC)

Embedded analog hub for ADC and processing analog input data

Embedded sensor fusion low-power algorithm

Embedded temperature sensor

Analog supply voltage: 1.71 V to 3.6 V

Independent I/O supply (extended range: 1.08 V to 3.6 V)

Compact footprint: 2.5 mm x 3 mm x 0.71 mm

ECOPACK and RoHS compliant
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ST Biosensors: Your gateway to smarter, more responsive, and energy-efficient wearables

Discover how vertical analog front-end technology interacts with the external analog world, detecting biopotential signals for fitness, wellness, healthcare, and gesture recognition in wearable devices. See how these sensors are revolutionizing various industries with real-time, accurate data.

Watch the video (1:09)

What is an ST biosensor?

Explore ST's innovative biosensors! By integrating motion MEMS with a vertical analog front-end (vAFE), they are setting the stage for cutting-edge predictive healthcare solutions.

Watch the video (1:30)

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	Part number	Status	Description	Type	Supplier
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Product evaluation tools

	Part number	Status	Description	Type	Supplier
Worldwide,Asia,Europe,Africa,North America,South America,Oceania,Afghanistan,Bahrain,Bangladesh,Bhutan,Brunei,Burma (Myanmar),Cambodia,China,East Timor,India,Indonesia,Iraq,Japan,Jordan,Kazakhstan,Kuwait,Kyrgyzstan,Laos,Malaysia,Maldives,Mongolia,Nepal,Oman,Pakistan,Philippines,Qatar,Russian Federation,Saudi Arabia,Singapore,South Korea,Sri Lanka,Taiwan,Tajikistan,Thailand,Turkmenistan,United Arab Emirates,Uzbekistan,Vietnam,Yemen,Albania,Andorra,Armenia,Austria,Azerbaijan,Belarus,Belgium,Bosnia and Herzegovina,Bulgaria,Croatia,Cyprus,Czech Republic,Denmark,Estonia,Finland,France,Georgia,Germany,Greece,Hungary,Iceland,Ireland,Israel,Italy,Latvia,Liechtenstein,Lithuania,Luxembourg,Macedonia,Malta,Moldova,Monaco,Montenegro,Netherlands,Norway,Poland,Portugal,Romania,San Marino,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,Turkey,Ukraine,United Kingdom,Vatican City,Algeria,Angola,Benin,Botswana,Burkina,Burundi,Cameroon,Cape Verde,Central African Republic,Chad,Comoros,Democratic Republic of Congo,Djibouti,Egypt,Equatorial Guinea,Eritrea,Ethiopia,Gabon,Gambia,Ghana,Guinea,Guinea-Bissau,Ivory Coast,Kenya,Lesotho,Liberia,Libya,Madagascar,Malawi,Mali,Mauritania,Mauritius,Morocco,Mozambique,Namibia,Niger,Nigeria,Rwanda,Sao Tome and Principe,Senegal,Seychelles,Sierra Leone,Somalia,South Africa,Swaziland,Tanzania,Togo,Tunisia,Uganda,Zambia,Zimbabwe,Antigua and Barbuda,Bahamas,Barbados,Belize,Canada,Costa Rica,Dominica,Dominican Republic,El Salvador,Grenada,Guatemala,Haiti,Honduras,Jamaica,Mexico,Nicaragua,Panama,Saint Kitts and Nevis,Saint Lucia,Saint Vincent and the Grenadines,Trinidad and Tobago,United States,Argentina,Bolivia,Brazil,Chile,Colombia,Ecuador,Guyana,Paraguay,Peru,Suriname,Uruguay,Venezuela,Australia,Fiji,Kiribati,Marshall Islands,Micronesia,Nauru,New Zealand,Palau,Papua New Guinea,Samoa,Solomon Islands,Tonga,Tuvalu,Vanuatu	STDES-ESP01	Active	ST1VAFE6AX and ST1VAFE3BX reference board supporting an electronic skin patch for cardio monitoring	MEMS motion sensor eval boards	ST	STDES-ESP01 Description: ST1VAFE6AX and ST1VAFE3BX reference board supporting an electronic skin patch for cardio monitoring
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Worldwide,Asia,Europe,Africa,North America,South America,Oceania,Afghanistan,Bahrain,Bangladesh,Bhutan,Brunei,Burma (Myanmar),Cambodia,China,East Timor,India,Indonesia,Iraq,Japan,Jordan,Kazakhstan,Kuwait,Kyrgyzstan,Laos,Malaysia,Maldives,Mongolia,Nepal,Oman,Pakistan,Philippines,Qatar,Russian Federation,Saudi Arabia,Singapore,South Korea,Sri Lanka,Taiwan,Tajikistan,Thailand,Turkmenistan,United Arab Emirates,Uzbekistan,Vietnam,Yemen,Albania,Andorra,Armenia,Austria,Azerbaijan,Belarus,Belgium,Bosnia and Herzegovina,Bulgaria,Croatia,Cyprus,Czech Republic,Denmark,Estonia,Finland,France,Georgia,Germany,Greece,Hungary,Iceland,Ireland,Israel,Italy,Latvia,Liechtenstein,Lithuania,Luxembourg,Macedonia,Malta,Moldova,Monaco,Montenegro,Netherlands,Norway,Poland,Portugal,Romania,San Marino,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,Turkey,Ukraine,United Kingdom,Vatican City,Algeria,Angola,Benin,Botswana,Burkina,Burundi,Cameroon,Cape Verde,Central African Republic,Chad,Comoros,Democratic Republic of Congo,Djibouti,Egypt,Equatorial Guinea,Eritrea,Ethiopia,Gabon,Gambia,Ghana,Guinea,Guinea-Bissau,Ivory Coast,Kenya,Lesotho,Liberia,Libya,Madagascar,Malawi,Mali,Mauritania,Mauritius,Morocco,Mozambique,Namibia,Niger,Nigeria,Rwanda,Sao Tome and Principe,Senegal,Seychelles,Sierra Leone,Somalia,South Africa,Swaziland,Tanzania,Togo,Tunisia,Uganda,Zambia,Zimbabwe,Antigua and Barbuda,Bahamas,Barbados,Belize,Canada,Costa Rica,Dominica,Dominican Republic,El Salvador,Grenada,Guatemala,Haiti,Honduras,Jamaica,Mexico,Nicaragua,Panama,Saint Kitts and Nevis,Saint Lucia,Saint Vincent and the Grenadines,Trinidad and Tobago,United States,Argentina,Bolivia,Brazil,Chile,Colombia,Ecuador,Guyana,Paraguay,Peru,Suriname,Uruguay,Venezuela,Australia,Fiji,Kiribati,Marshall Islands,Micronesia,Nauru,New Zealand,Palau,Papua New Guinea,Samoa,Solomon Islands,Tonga,Tuvalu,Vanuatu	STEVAL-MKI249KA	Active	ST1VAFE6AX biosensor evaluation kit	MEMS motion sensor eval boards	ST	STEVAL-MKI249KA Description: ST1VAFE6AX biosensor evaluation kit

Software development tools

	Part number	Status	Description	Type	Supplier
Worldwide,Asia,Europe,Africa,North America,South America,Oceania,Afghanistan,Bahrain,Bangladesh,Bhutan,Brunei,Burma (Myanmar),Cambodia,China,East Timor,India,Indonesia,Iraq,Japan,Jordan,Kazakhstan,Kuwait,Kyrgyzstan,Laos,Malaysia,Maldives,Mongolia,Nepal,Oman,Pakistan,Philippines,Qatar,Russian Federation,Saudi Arabia,Singapore,South Korea,Sri Lanka,Taiwan,Tajikistan,Thailand,Turkmenistan,United Arab Emirates,Uzbekistan,Vietnam,Yemen,Albania,Andorra,Armenia,Austria,Azerbaijan,Belarus,Belgium,Bosnia and Herzegovina,Bulgaria,Croatia,Cyprus,Czech Republic,Denmark,Estonia,Finland,France,Georgia,Germany,Greece,Hungary,Iceland,Ireland,Israel,Italy,Latvia,Liechtenstein,Lithuania,Luxembourg,Macedonia,Malta,Moldova,Monaco,Montenegro,Netherlands,Norway,Poland,Portugal,Romania,San Marino,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,Turkey,Ukraine,United Kingdom,Vatican City,Algeria,Angola,Benin,Botswana,Burkina,Burundi,Cameroon,Cape Verde,Central African Republic,Chad,Comoros,Democratic Republic of Congo,Djibouti,Egypt,Equatorial Guinea,Eritrea,Ethiopia,Gabon,Gambia,Ghana,Guinea,Guinea-Bissau,Ivory Coast,Kenya,Lesotho,Liberia,Libya,Madagascar,Malawi,Mali,Mauritania,Mauritius,Morocco,Mozambique,Namibia,Niger,Nigeria,Rwanda,Sao Tome and Principe,Senegal,Seychelles,Sierra Leone,Somalia,South Africa,Swaziland,Tanzania,Togo,Tunisia,Uganda,Zambia,Zimbabwe,Antigua and Barbuda,Bahamas,Barbados,Belize,Canada,Costa Rica,Dominica,Dominican Republic,El Salvador,Grenada,Guatemala,Haiti,Honduras,Jamaica,Mexico,Nicaragua,Panama,Saint Kitts and Nevis,Saint Lucia,Saint Vincent and the Grenadines,Trinidad and Tobago,United States,Argentina,Bolivia,Brazil,Chile,Colombia,Ecuador,Guyana,Paraguay,Peru,Suriname,Uruguay,Venezuela,Australia,Fiji,Kiribati,Marshall Islands,Micronesia,Nauru,New Zealand,Palau,Papua New Guinea,Samoa,Solomon Islands,Tonga,Tuvalu,Vanuatu	MEMS-Studio	Active	Software solution for MEMS sensors with graphical no-code design of algorithms and development of embedded AI features	Sensor software development tools	ST	MEMS-Studio Description: Software solution for MEMS sensors with graphical no-code design of algorithms and development of embedded AI features

All resources

	Resource title	Version	Latest update

Product Specifications (1)

	Resource title	Version	Latest update
PDF	DS14645 Biosensor with vAFE for biopotential signals and 6-axis IMU (inertial measurement unit) with AI and sensor fusion	2.0	03 Dec 2024	03 Dec 2024 DS14645 Biosensor with vAFE for biopotential signals and 6-axis IMU (inertial measurement unit) with AI and sensor fusion 2.0

Application Notes (4)

	Resource title	Version	Latest update
PDF	AN6120 ST1VAFE6AX: biosensor with vAFE (vertical analog front-end) for biopotential signals and 6-axis IMU (inertial measurement unit) with AI and sensor fusion	1.0	15 Jul 2024	15 Jul 2024 AN6120 ST1VAFE6AX: biosensor with vAFE (vertical analog front-end) for biopotential signals and 6-axis IMU (inertial measurement unit) with AI and sensor fusion 1.0
PDF	AN6155 ST1VAFE6AX: finite state machine	1.0	15 Jul 2024	15 Jul 2024 AN6155 ST1VAFE6AX: finite state machine 1.0
PDF	AN6161 ST1VAFE6AX: machine learning core	1.0	15 Jul 2024	15 Jul 2024 AN6161 ST1VAFE6AX: machine learning core 1.0
PDF	AN6173 Using biosensors for ECG monitoring: guidelines for setting up the adapter boards and MEMS Studio	3.0	13 Jan 2025	13 Jan 2025 AN6173 Using biosensors for ECG monitoring: guidelines for setting up the adapter boards and MEMS Studio 3.0

Technical Notes & Articles (2)

	Resource title	Version	Latest update
PDF	TN0018 Handling, mounting, and soldering guidelines for MEMS devices	8.0	20 Mar 2025	20 Mar 2025 TN0018 Handling, mounting, and soldering guidelines for MEMS devices 8.0
PDF	TN1571 Reference design based on the ST1VAFE6AX and ST1VAFE3BX biosensors for an electronic skin patch used in cardio monitoring	1.0	10 Feb 2025	10 Feb 2025 TN1571 Reference design based on the ST1VAFE6AX and ST1VAFE3BX biosensors for an electronic skin patch used in cardio monitoring 1.0

Presentations (1)

	Resource title	Version	Latest update
PDF	Biosensors for well-being and healthcare	1.0	08 Jan 2025	08 Jan 2025 Biosensors for well-being and healthcare 1.0

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Part Number	Marketing Status	Package	RoHS Compliance Grade	Material Declaration**
ST1VAFE6AXTR	Active	VFLGA2.5X3X.71 14L P.5 L.475X.25	Ecopack2

ST1VAFE6AXTR

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VFLGA2.5X3X.71 14L P.5 L.475X.25

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(**) 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.

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Product Specifications (1)

Application Notes (4)

Technical Notes & Articles (2)

Presentations (1)

EDA Symbols, Footprints and 3D Models

Quality and Reliability

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