Datasheet

Setup
2.4. Schematic
The following figures show the schematic for the ADS1293EVM:
0.1µF C2
RSTB
WCT CLK
CMOUT RLDOUT
GND1
VDD
VDDIO
VDDIO VDDIO
CMOUT RLDOUT
IN1 IN2 IN3
Y1
22pF C6 22pF C5
VDD
IN4 IN5 IN6
RLDIN RLDREF
51R4
51R2
AGND
DGND
DNP R11
AGND
RLDINIV
VDDIO VDDIO
GND6
AGND AGND
RLDREF
CVREF
AGND
ADS1293
XTAL
EXT_CLK
GND2
DGND
GND8
DGND
GND
GND GND
GND
GND
1µF C3
1 2
SW1
AGND
IN1
1
IN2
2
IN3
3
IN4
4
IN5
5
IN6
6
CMOUT
8
RLDOUT
9
RLDINV
10
RLDIN
11
RLDREF
12
WCT
7
SYNCB
13
VSSIO
14
ALARMB
15
CSB
16
SCLK
17
SDI
18
SDO
19
DRDYB
20
CLK
21
VDDIO
22
XTAL1
23
XTAL2
24
RSTB
25
CVREF
26
VSS
27
VDD
28
DAP
DAP
U1 ADS1293
CONNECTOR FOR ECG
ECG_CON
DGND
AGND
DGND
DGND
DGND
DGND AGND
0 R14
RA LA LL RL V1
SCLK SDI CSB SDO DRDYB ALARMB SIGNALS TO MSP430
5 4 1 2 3 6
J2
SPI_PROBE
CSB SDO SCLK DRDYB SDI ALARMB
RLDIN
VREF
6 7 8 9 1 2 3 4 5
10
11
J1
AGND
RA LA LL RL V1
0.1µF C1
0.1µF C4
0.1µF
C7
1.0Meg R12 1.0Meg R13
1.0Meg R1 1.0Meg R9
10Meg Rf
10.0k Ri
0 R15
0RIN1 0RIN2 0RIN3 0RIN4 0RIN5 0RIN6
WCT
SDO SDI SCLK CSB
DRDYB
ALARMB
CSB SCLK SDO SDI DRDYB ALARMB
DGND AGND DGND AGND
0 R5 0 R6
1nF Cf