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AS7024 Vital Signs Module

Smart Health & Fitness Solution


  • Single module integrated solution - 5 Photo Diodes (4 for PPG, 1 for Prox), 3 LEDs (2 green, 1 IR), Analog Front End
  • Dimension 2.7mm x 6.1mm
  • Low noise Optical Front End (Synchronous demodulators, Programmable sequencer & HP filter)
  • Low noise analog electrical front for ECG and additional measurements
  • Algorithms for HRM, motion compensation, blood pressure


  • Allows small size application e.g. wearable and mobile
  • Reliable PPG and HRM measurement
  • Works reliably with ambient light
  • Off load processor ensuring long operating time
  • Additional information e.g. ECG, Blood Pressure, Temperature
  • 1-stop shop combining Hardware and Algorithm allows quick time to market

Product parameters

Supply Voltage [V] 2.7 to 5.5
I²C Bus I²C Slave, Standard (100kHz) and Fast Mode (400kHz)
Temperature Range [°C] -30 to 70
Packages 20 pins, 6.1mm x 2.7mm x 1mm
LED Configuration 2 Green, 1 IR
Supported Algorithms Blood Pressure, HRM, HRV

General Description

The operation of the AS7024 is based on photoplethysmography (PPG) and electrocardiogram (ECG). PPG is the most used HRM method which measures the pulse rate by sampling light modulated by the blood vessels, which expand and contract as blood pulses through them. ECG is the reference for any measurement of the bio potential generated by the heart.
The AS7024 is supported by algorithms converting the PPG and ECG readings into digital HRM, HRV and Blood Pressure values. The module includes the LEDs, photo-sensor, analog front-end (AFE) and sequencer as well as application software. In addition to HRM/HRV and Blood Pressure, the module also enables skin temperature and skin resistivity measurements by providing interfaces to external sensors.
The AS7024’s low-power design and small from factor is particularly well suited to application in fitness bands, smart watches, sports watches and smart patches, in which board space is limited and in which users look for extended, multi-day intervals between battery recharges.

Not Recommended for New Designs

ams AG does not recommend using AS7024 for new designs. Please see AS7026GG for possible replacement or contact your local sales representative for further information.

This product suits for the following applications:

  • Wearables
  • Smart health
  • Smart patches
  • Smartphones
  • Automotive
  • Health & Wellness


Title Category Headline Buy
Eval Kit AS7024 Application Board Evaluation Kit for AS7024 - Vital Signs
AS7024 Add-On Board Application Board Add-On Board for AS7024 - Vital Signs

Technical Documents

Type Description Language
Datasheet Document version 1-04 English
Application Note AS702x Galvanic Skin Resistance Implementation English
Application Note Using External Temperature Sensors with AS702x English
User Guide AS702x Evaluation SW User Guide English


Type Description Language
EoL Notification AS7000, AS7024 (issued 2019-Jul) English

Other Information

Type Description Language
Block Diagram Block Diagram AS7024 English
Factsheet Vital Signs Module English
Image AS7024 EVK Image English

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The modules are ideal for a wide range of end products including wearable devices, medical monitors, industrial equipment and mobile devices. Biometric sensors from ams are able to achieve the highest accuracy ratings in the industry because of a combination of a low-noise analog and optical front-end and custom ams software and algorithms. Drawing on expertise in optical sensing in mobile devices, ams provides OEMs with electrical, mechanical and optical design guidelines to enable designers to quickly realize a successful implementation.

Watch VivaVita Demo from MWC: Spencer Bai, ams Field Application Engineer, showcases the new VivaVita Blood pressure demonstrator. The device is expected to be granted medical-grade certification mid of 2019, and is able to measure the exact ECG and PPG signal quickly and conveniently.