TIDA-010267

Single-chip pulse oximeter reference design with 90dB dynamic range for lower perfusion index

TIDA-010267

Design files

Overview

This reference design demonstrates the analog capabilities of the MSPM0L1306 in a low-cost, single chip pulse oximeter design. The operational amplifiers within the MSPM0L1306 serve as the transimpedance amplifier and current control driver with zero-drift, low-noise capabilities. The integrated high-speed, analog-to-digital converter (ADC) provides the ability to oversample and achieve high levels of dynamic range. This design features a GUI to visualize photoplethysmography (PPG) waveforms and vitals measurements of heart rate in beats per minute (BPM) and peripheral oxygen saturation (%SpO2).

Features
  • Achievable heart rate range of 30 to 240 BPM and perfusion index (PI) range of 0.1% to 20% for a wide variety of pulse strengths and greater reliability
  • 90dB dynamic range achievable from internal 12-bit ADC through oversampling
  • Standard display resolution of 1BPM and 1% SpO2 for accurate vital readings
  • Longer battery life with ultra-low (< 83nA) shutdown current during device off-time
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

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

PDF | HTML
TIDUF16.PDF (1301 KB)

Reference design overview and verified performance test data

TIDMCF0.PDF (190 KB)

Detailed overview of design layout for component placement

TIDMCE9.PDF (154 KB)

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

TIDMCF2.ZIP (1925 KB)

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

TIDCGL2.ZIP (473 KB)

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

TIDMCF1.PDF (523 KB)

PCB layer plot file used for generating PCB design layout

TIDMCE8.PDF (383 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

Arm Cortex-M0+ MCUs

MSPM0L130632-MHz Arm® Cortex®-M0+ MCU with 64-KB flash, 4-KB SRAM, 12-bit ADC, comparator, OPA

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide Single-Chip Pulse Oximeter Reference Design With 90-dB Dynamic Range for Lower PI PDF | HTML Dec 18, 2023
Product overview MSPM0-Based Low-Cost Single-Chip Pulse Oximeter Reference Design PDF | HTML Jul 25, 2023

Related design resources

Software development

SOFTWARE DEVELOPMENT KIT (SDK)
MSPM0-SDK MSPM0 software development kit (SDK)

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