TIDA-01580
Wireless ECG, SpO2, PTT and heart rate monitor reference design for medical and consumer wearables
TIDA-01580
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
Industrial
- Clinical digital thermometer
- Digital stethoscope
- ECG patch
- Electric shaver
- Electrocardiogram (ECG)
- Epilator & hair removers
- Hair groomers
- Multiparameter patch
- Patient monitor - CO2 capnography module
- Patient monitor - ECG module
- Patient monitor - IBP module
- Patient monitor - SPO2 module
- Patient monitor - subsystems module
- Patient monitor - temperature sensor module
- Patient monitor - wireless module
- Pulse oximeter - clinical
- Pulse oximeter - personal
- Sleep diagnostics
- Temperature sensor patch
- Treadmill
- Wearable fitness & activity monitor
Personal electronics
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
AFE4900 — Ultra-low-power integrated AFE for wearable optical, electrical biosensing
Data sheetBluetooth products
CC2640R2F — SimpleLink™ 32-bit Arm® Cortex®-M3 Bluetooth® 5.1 Low Energy wireless MCU with 128-kB flash
Data sheetBoost converters (integrated switch)
TPS61099 — 0.7Vin Synchronous Boost Converter with 800 nA Ultra-Low Quiescent Current
Data sheetBuck-boost, inverting & split-rail converters (integrated switch)
TPS63036 — High Efficient Single Inductor Buck-Boost Converter with 1-A Switches
Data sheetBuck-boost, inverting & split-rail converters (integrated switch)
TPS63900 — 1.8-V to 5.5-V, 75-nA IQ buck-boost converter with input current limit and Dynamic Voltage Scaling
Data sheetESD & surge protection ICs
TPD1E10B06 — 12-pF, ±5.5V, ±30-kV ESD protection diode in 0402 and SOD-523 package
Data sheetStart development
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 |
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