AN7487: Power Supply SubSystem for MAX30001-Based ECG Remote Patient Vital Sign Monitor


This application note is part of a series providing guidance for its readers to implement and validate a proven switch-mode power supply circuit for use in remote vital sign monitoring devices using Maxim Biosensing Analog Front Ends (AFEs). This document focuses on a vital sign monitor using the MAX30001 ECG AFE. Within this application note, readers will find reference schematics and layout (in popular EDA and PDF formats), validation check lists, and trouble-shooting guideline.

The figure below, shows a block diagram where the MAX30001 AFE device requires two power channels to power the digital supply, analog supply, and the OVDD (Logic Interface Voltage) supply.

This subsystem passes the performance limit criteria as specified by IEC60601 System Noise testing.

Please see the App Note 7487 page for:

  • MAX38640A Reference Design Files

  • MAX77642 Reference Design Files

  • 1.8V SMPS Circuit Validation Checklist

  • 1.8V SMPS Circuit Troubleshooting Guide


Manufacturer Maxim Integrated
Category AC/DC and DC/DC Conversion
Sub-Category Specific Power Solutions
Eval Board Board not Stocked
Processor MAX30001
Features Single or Dual DC/DC Solutions
Design Author Maxim Integrated Products
Main I.C. Base Part MAX20343
Date Created By Author 2021-07
Date Added To Library 2021-07