Datasheet
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36 Dedicated Reference and Bias Electrode .............................................................................. 33
37 Programmable reference and bias electrode .......................................................................... 34
38 Settings for Normal Electrode............................................................................................ 35
39 Configuring BIASREF and Bias Drive Buffer .......................................................................... 35
40 Setting up the Bias Drive Loop .......................................................................................... 36
41 Setting the LOFF Register Bits .......................................................................................... 37
42 Configuring the Lead Off Comparator .................................................................................. 37
43 Lead off Status Registers ................................................................................................ 37
44 Scope tab for Impedance Measurement at 31.25Hz ................................................................. 38
45 FFT Analysis for Impedance Measurement at 31.25Hz.............................................................. 39
46 Scope Tab for Impedance Measurement at fDR/4 (DR = 4ksps) ................................................... 40
47 Multiplexer Setting for Calibration with Electrode Disconnected .................................................... 41
48 Multiplexer Setting with Positive Electrode Connected to Test Signal ............................................. 42
49 Multiplexer Setting with Both Electrodes Connected to Test Signal................................................ 42
50 Channel Setting for Input Short Test.................................................................................... 43
51 Global Register Settings for Input Short Test.......................................................................... 43
52 Scope Tab for Input Short Test.......................................................................................... 44
53 Global Register Settings for External Input Short Test ............................................................... 45
54 Scope Showing Noise for Input Short with 5k Resistors ............................................................. 45
55 MISC1 Register Setting for SRB1....................................................................................... 46
56 Noise with Negative Input Connected to SRB1 Pin................................................................... 47
57 Noise with OPA376 in SRB1 Path ...................................................................................... 48
58 Scope Tab with Sinusoidal Inputs on AIN1 ............................................................................ 49
59 ADS1299EEG-FC Schematic ........................................................................................... 50
60 ADS1299EEG-FC Jumper Schematic ................................................................................. 51
61 ECG Power Supplies ..................................................................................................... 52
62 External Reference Drivers (Not Installed) ............................................................................ 53
63 ECG MDK Board Interface Adapter..................................................................................... 53
64 ADS1299EEG-FE Top Assembly ....................................................................................... 54
65 ADS1299EEG-FE Top Layer ............................................................................................ 54
66 ADS1299EEG-FE Internal Layer (1) .................................................................................... 55
67 ADS1299EEG-FE Internal Layer (2) .................................................................................... 55
68 ADS1299EEG-FE Bottom Layer ........................................................................................ 56
69 ADS1299EEG-FE Bottom Assembly.................................................................................... 56
70 Recommended Power Supply for ADS1299EEG-FE................................................................. 59
List of Tables
1 Factory Default Jumper Settings.......................................................................................... 6
2 Power Supply Test Points ................................................................................................ 15
3 Analog Supply Configurations ........................................................................................... 15
4 Digital Supply Configurations ............................................................................................ 15
5 Clock Jumper Options .................................................................................................... 15
6 External Reference Jumper Options .................................................................................... 16
7 Test Signals ................................................................................................................ 16
8 Serial Interface Pin Out ................................................................................................... 16
9 Dedicated Reference Drive Options through REF_ELEC............................................................ 33
10 Bill of Materials............................................................................................................. 57
3
SLAU443–May 2012 EEG Front-End Performance Demonstration Kit
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