EEG System PCB Design Guide

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71 days

flux

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Work done
Success criteria review
  • ❌ Two separate Flux projects were not created (I only have access to the single current project context).
  • ❌ Analog + digital schematics were not yet built (no components/nets placed/wired).
  • ❌ DF40 interleaved-GND pin map not yet instantiated/documented in-project.
  • ❌ 4-layer stackup + layout rules not yet configured.
Next steps
  • Please create (or share links to) two empty Flux projects named EEG Analog and EEG Digital, or confirm you want me to proceed inside this single project first (and later duplicate/split).
  • Once you confirm, I will: (1) set each project description, (2) add the DF40 connector(s) and define the pin map, (3) add/place the required ICs, passives, and protection parts, (4) wire shared SPI with per-AFE CS/DRDY plus shared START/RESET, and (5) set 4-layer stackup + initial layout rules, then check ERC/DRC.
71 days
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    EEG Digital thumbnail
    Two-PCB low-noise EEG system: Digital board (ESP32-S3-MINI-1U + ADS1299 + CP2102N + USB-C + 1S Li-ion charger/power-path + DF40 mezzanine) and Analog board (3x ADS1299 + REF/BIAS/DRL + driven-shield electrode interfaces + local low-noise regulation + test points). DF40 mezzanine carries only power + digital SPI/control with shared SPI, shared START/RESET, and separate CS/DRDY per AFE. 4-layer stacks with strong analog/digital partitioning and interleaved GND pins on DF40.

    Properties

    Diagram
    


  
    
  
  
    
  



""Digital Board""


""Analog Board""















































"USB-C Connector"
"Low Cap TVS D+ D-"
"1S Charger PowerPath Prot"
"1S Li-ion Battery"
"3V3 Digital Regulator"
"3V3 Analog Regulator"
"ESP32-S3-MINI-1U"
"ADS1299 x1 Digital Board"
"CP2102N USB-UART"
"DF40 Mezzanine 60-pin"
"Electrode Pads and ESD"
"DF40 Mate"
"Low Noise Regulators"
"Ferrite and RC Filters"
"ADS1299 A1"
"ADS1299 A2"
"ADS1299 A3"
"Electrode Input Networks"
"REF BIAS DRL Driven Shield"
"Test Points"

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