Optical Heart Rate Monitor Reference Design with BLE Connectivity


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This reference design is for a complete Optical Heart Rate Monitor wrist watch (no chest strap!) end equipment featuring TI signal chain, power, and connectivity components. With TI's AFE4400 AFE, you can accelerate and simplify your wrist based HRM design while still ensuring measurement performance needed for serious Fitness designs. This reference design also includes a full BLE connectivity design for easy interface to BLE enabled smartphones, tablets, etc.

  • Features AFE4400 for measuring pulse from veins in wrists
  • MSP430F5528 MCU for holding algorithm and motion cancellation calibration data
  • BLE module connection featuring TI's CC2541
  • This design is tested and provides everything you need to complete your design including Schematics, Layout and Gerber files, and BOM


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Part Number Buy from Texas Instruments or Third Party Status

AFE4403 Watch EVM


TI's Standard Terms and Conditions for Evaluation Modules apply.

TI Devices (8)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
AFE4400  Integrated Analog Front End for Heart Rate Monitors and Low Cost Pulse Oximeters  Analog Front End (AFE)  Sample & Buy View Design Kits & Evaluation Modules
BQ24072  USB-Friendly Li-Ion Battery Charger and Power-Path Management IC, Vout 200mV above Vbat | Linear  Battery Management Products  Sample & Buy View Design Kits & Evaluation Modules
BQ27425-G1  System-Side Impedance Track™ Fuel Gauge With Direct Battery Connection | Gas Gauge Battery  Battery Management Products  Sample & Buy View Design Kits & Evaluation Modules
CC2541  SimpleLink Bluetooth Smart and Proprietary Wireless MCU  Wireless Connectivity  Sample & Buy View Design Kits & Evaluation Modules
MSP430F5528  16-Bit Ultra-Low-Power Microcontroller, 128KB Flash, 8KB RAM, USB, 12Bit ADC, 2 USCIs, 32Bit HW MPY  Low Power + Performance  Sample & Buy View Design Kits & Evaluation Modules
TPS61093  Low Input, 20V/1.1A Step-Up DC/DC Converter with Integrated Power Diode and Input/Output Isolation  Converter (Integrated Switch)  Sample & Buy View Design Kits & Evaluation Modules
TPS736  Single Output LDO, 400mA, Adj.(1.2 to 5.5V), Cap free, Low Noise, Reverse Current Protection  Linear Regulator (LDO)  Not Available View Design Kits & Evaluation Modules
TPS7A4901  Vin 3V to 36V, 150mA, Ultra-Low Noise, High PSRR, Low-Dropout Linear Regulator  Linear Regulator (LDO)  Sample & Buy View Design Kits & Evaluation Modules

Technical Documents
User Guides (1)
Title Abstract Type Size (KB) Date Views
PDF 1476 28 Aug 2013 2,773
White Papers (1)
Title Abstract Type Size (KB) Date Views
PDF 690 04 Aug 2014 1,816
Design Files (4)
Title Abstract Type Size (KB) Date Views
PDF 70 17 Jul 2014 1,696
PDF 223 17 Jul 2014 2,454
ZIP 3708 28 Aug 2013 741
PDF 123 28 Aug 2013 845
Related Tools & Software

Software (1)

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