SLAU443 Datasheet, PDF (53/68 Pages) Texas Instruments – EEG Front-End Performance Demonstration Kit

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Bill of Materials, Layouts and Schematics
R50 NI
C40 NI
AVDD
C41 NI
AGND
U3
NI
AVDD
1
N/C
2
R49 3
NI
U5
6
NI
R51
JP3
VREFP
NI
NI
2 _VIN
OUT ⁶
C34
3 _TEMP
R47
C35
NI
NI
NI
4 _{GND TRIM} 5
C43
AVSS
R48
NI
C38 C39
NI
NI
C42 NI
AGND
NI
AVSS
AVSS
Figure 62. External Reference Drivers (Not Installed)
DVDD
J2
12
34
56
78
9 10
11 12
13 14
15 16
17 18
19 20
Dummy Connector
SPI_CS
JP21
SPI_START
JP22
SPI_CLK
SPI_IN
SPI_OUT
SPI_DRDY
EXT_CLK
J3
12
34
56
78
9 10
11 12
13 14
15 16
17 18
19 20
R67
10K
J4
JP23
GPIO1
/RESET
CLKSEL
VCC_5v
TP7
JP4
21
43
65
87
10 9
GPIO2
C68 C69
AGND
VCC_3.3V
8
SCL 6
SDA
5
7
100uF
C94
0.1uF
U10
VCC
SCL
SDA
WP
A0
A1
A2
GND
1
2
3
4
0.1uF
R68
R69
R70
VCC_3.3V
NI
NI
NI
24AA256-I/ST
R71 R72 R73
000
NOTE: Populate J2, J3, and J4 female connectors from the bottom
DVDD
C71 100uF
TP9
VCC_1.8V
TP8
C70
0.1uF
AGND
JP24
VCC_3.3V ^TP10
R74 0
AGND
Figure 63. ECG MDK Board Interface Adapter
9.2 Printed Circuit Board Layout
Figure 64 through Figure 69 show the ADS1299EEG-FE PCB layout.
SLAU443 – May 2012
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EEG Front-End Performance Demonstration Kit
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