TIDA-01580

Wireless ECG, SpO2, PTT and heart rate monitor reference design for medical and consumer wearables

TIDA-01580

Design files

Overview

This reference design is a simple, wearable, multi-parameter, patient monitor that uses a single-chip, biosensing front end, AFE4900, for synchronized electrocardiography (ECG) and photoplethysmography (PPG) measurements. The measured data is transferred to a remote location using CC2640R2F (supporting BLE 4.2 and 5). The reference design is operated using a single CR3032 battery and provides a battery life of 30 days. The raw data is available for the user to calculate heart-rate, oxygen concentration in blood (SpO2), pulse-transit time (PTT), and ECG. Two onboard light-emitting diodes (LEDs) indicate low-battery detection and ECG lead-off detection for users.

Features
  • Simple, wearable, multi-parameter, patient monitor for PPG and ECG
  • Provides raw data to calculate heart rate, SpO2, and PTT
  • Uses single-chip, biosensing front-end AFE4900 for synchronized ECG and PPG measurements
    • PPG (Optical heart-rate monitoring and SpO2) supports four LEDs and three photodiodes (PDs), with digital ambient subtraction to improve signal-to-noise ratio (SNR)
    • ECG (LEAD I) signals
  • Integrated Arm® Cortex®-M3 and 2.4-GHz RF transceiver (CC2640R2F) supports wireless data transfer - BLE 4.2 and 5.0
  • Operated by CR3032 (3-V, 500-mA coin-cell battery), with battery life of 30 days using highly efficient DC/DC converters
  • Small form factor helps with easy adaptation to wearable applications

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUDO6B.PDF (8842 K)

Reference design overview and verified performance test data

TIDRW34A.ZIP (704 K)

Detailed schematic diagram for design layout and components

TIDRW35A.ZIP (184 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRW36A.ZIP (308 K)

Detailed overview of design layout for component placement

TIDRW38A.ZIP (5686 K)

Files used for 3D models or 2D drawings of IC components

TIDCEM2A.ZIP (930 K)

Design file that contains information on physical board layer of design PCB

TIDRW37A.ZIP (1030 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Biosensing AFEs

AFE4900Ultra-low-power integrated AFE for wearable optical, electrical biosensing

Data sheet document-pdfAcrobat PDF open-in-new HTML
Bluetooth products

CC2640R2FSimpleLink™ 32-bit Arm® Cortex®-M3 Bluetooth® 5.1 Low Energy wireless MCU with 128-kB flash

Data sheet document-pdfAcrobat PDF
Boost converters (integrated switch)

TPS610990.7Vin Synchronous Boost Converter with 800 nA Ultra-Low Quiescent Current

Data sheet document-pdfAcrobat PDF open-in-new HTML
Buck-boost, inverting & split-rail converters (integrated switch)

TPS63036High Efficient Single Inductor Buck-Boost Converter with 1-A Switches

Data sheet document-pdfAcrobat PDF open-in-new HTML
Buck-boost, inverting & split-rail converters (integrated switch)

TPS639001.8-V to 5.5-V, 75-nA IQ buck-boost converter with input current limit and Dynamic Voltage Scaling

Data sheet document-pdfAcrobat PDF open-in-new HTML
ESD & surge protection ICs

TPD1E10B0612-pF, ±5.5V, ±30-kV ESD protection diode in 0402 and SOD-523 package

Data sheet document-pdfAcrobat PDF open-in-new HTML

Start development

Software

Firmware

TIDA-01580 Firmware (Rev. A) – TIDCEM3A.ZIP (18908 K)

Support software

TIDA-01580 LabView Application (Rev. A) – TIDCEM4A.ZIP (44744 K)

Technical documentation

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Type Title Date
* Design guide Wireless ECG, SpO2, PTT and Heart Rate Monitor Reference Design (Rev. B) Oct. 05, 2020
Technical article VIDEO: Wearable, wireless patient monitoring demo with Bluetooth 5 Jun. 27, 2019
Technical article Designing compact, efficient and high performing multiparameter patient monitors Jun. 25, 2019
Application note Measuring CC13xx and CC26xx current consumption (Rev. D) Jan. 10, 2019
More literature TIDA-01580 Firmware (Rev. A) Oct. 17, 2018
Technical article No strings attached: Creating next-generation wireless patient monitors Jun. 29, 2018
Technical article 10 lessons learned from 50-plus biometric wearable product development cycles May 21, 2018
Application note How to Design an SpO2 and OHRM System Using AFE4403 Mar. 02, 2015
Application note Understanding Lead-Off Detection in ECG (Rev. A) Jan. 14, 2015

Related design resources

Hardware development

DEVELOPMENT KIT
LAUNCHXL-CC2640R2 SimpleLink™ Bluetooth® Low Energy CC2640R2 wireless MCU LaunchPad™ development kit

Reference designs

REFERENCE DESIGN
TIDA-010029 Wearable, 16-phase multi-sensor SpO2 and heart rate monitor (HRM) reference design with Bluetooth® 5

Support & training

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