6462011 datasheet(3/68 Pages) TI1

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Dedicated Reference and Bias Electrode

.............................................................................. 33

Programmable reference and bias electrode

.......................................................................... 34

Settings for Normal Electrode

............................................................................................ 35

Configuring BIASREF and Bias Drive Buffer

.......................................................................... 35

Setting up the Bias Drive Loop

.......................................................................................... 36

Setting the LOFF Register Bits

.......................................................................................... 37

Configuring the Lead Off Comparator

.................................................................................. 37

Lead off Status Registers

................................................................................................ 37

Scope tab for Impedance Measurement at 31.25Hz

................................................................. 38

FFT Analysis for Impedance Measurement at 31.25Hz

.............................................................. 39

Scope Tab for Impedance Measurement at fDR/4 (DR = 4ksps)

................................................... 40

Multiplexer Setting for Calibration with Electrode Disconnected

.................................................... 41

Multiplexer Setting with Positive Electrode Connected to Test Signal

............................................. 42

Multiplexer Setting with Both Electrodes Connected to Test Signal

................................................ 42

Channel Setting for Input Short Test

.................................................................................... 43

Global Register Settings for Input Short Test

.......................................................................... 43

Scope Tab for Input Short Test

.......................................................................................... 44

Global Register Settings for External Input Short Test

............................................................... 45

Scope Showing Noise for Input Short with 5k Resistors

............................................................. 45

MISC1 Register Setting for SRB1

....................................................................................... 46

Noise with Negative Input Connected to SRB1 Pin

................................................................... 47

Noise with OPA376 in SRB1 Path

...................................................................................... 48

Scope Tab with Sinusoidal Inputs on AIN1

............................................................................ 49

ADS1299EEG-FC Schematic

........................................................................................... 50

ADS1299EEG-FC Jumper Schematic

................................................................................. 51

ECG Power Supplies

..................................................................................................... 52

External Reference Drivers (Not Installed)

............................................................................ 53

ECG MDK Board Interface Adapter

..................................................................................... 53

ADS1299EEG-FE Top Assembly

....................................................................................... 54

ADS1299EEG-FE Top Layer

............................................................................................ 54

ADS1299EEG-FE Internal Layer (1)

.................................................................................... 55

ADS1299EEG-FE Internal Layer (2)

.................................................................................... 55

ADS1299EEG-FE Bottom Layer

........................................................................................ 56

ADS1299EEG-FE Bottom Assembly

.................................................................................... 56

Recommended Power Supply for ADS1299EEG-FE

................................................................. 59

List of Tables

Factory Default Jumper Settings

.......................................................................................... 6

Power Supply Test Points

................................................................................................ 15

Analog Supply Configurations

........................................................................................... 15

Digital Supply Configurations

............................................................................................ 15

Clock Jumper Options

.................................................................................................... 15

External Reference Jumper Options

.................................................................................... 16

Test Signals

................................................................................................................ 16

Serial Interface Pin Out

................................................................................................... 16

Dedicated Reference Drive Options through REF_ELEC

............................................................ 33

Bill of Materials

............................................................................................................. 57

SLAU443 – May 2012

EEG Front-End Performance Demonstration Kit

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