Place the decoupling capacitors close to power pins in layout
DNI
A
B
C
D
5
4
3
2
1
D
C
B
A
1
2
3
4
5
Title
Size
Document Number
Rev
Date:
Sheet
of
7
ADS1x9xECG FE
ADS1292
A
2
B
Thursday, August 04, 2011
Note:
For two channel ECG Do the following modification
1) Mount 51K resistor in place of R71 and R63
2) Mount 0 Ohm resistors in place of C48, C46, C49 and C50
3) Make following components DNI
R66, R64, R72, R62, C47,C45,R70 and R69
External Clock
ELL
ELA
ERA
ERL
ECG_SHD_DRV
C45
2.2nF
R32 10K
R44
0E
R63
0E
1
ENB
2
GND
3
OUT
4
VDD
O1
NI
1
TP
53
C69
NI
5
9
4
8
3
7
2
6
1
10
11
P5
482016042
R55
0E
R85
51K
R21
NI
R77
10K
C58
1uF
C24
4.7nF
1
TP38
L3
BLM18PG121SN1P
R62
10M (1%)
R4
0E
C15
0.1uF
1
TP
11
R64
10M (1%)
C22
1uF
1
TP
47
R26
0E
R69 40K
C10
4.7nF
C19
0.1uF
R27
0E
R76
NI
DNI
C56
47pF
1
TP
46
1
TP
56
1
TP
24
C14
1uF
1
TP
52
1
TP
42
R45
0E
R41
NI
C4
NI
C18
1uF
R36
1M
R34 10K
R37
0E
R54
0E
R66
10M (1%)
C60
47pF
C6
10uF
C49
2.2nF
R2
NI
1
TP
16
R73
51K
R72
10M (1%)
C71
NI
R23
0E
1
PGA1N
2
PGA1P
3
IN1N
4
IN1P
5
IN2N
6
IN2P
7
PGA2N
8
PGA2P
9
VREF
P
10
VREF
N
11
VCAP1
12
AVDD
13
AVSS
14
CL
KSEL
15
PWDN#/RESET#
16
START
17
CLK
18
CS#
19
DIN
20
SCLK
21
DOUT
22
DRDY#
23
DVDD
24
DGND
25
GPIO2
/RCL
K2
26
GPIO1
/RCL
K1
27
VCAP2
28
RL
DINV
29
RL
DIN/RL
DREF
30
RL
DOUT
31
RESP_MODP/IN3P
32
RESP_MODN/IN3N
U5
ADS1292R
R70
40K
C50
2.2nF
C9
0.1uF
R71
0E
C23
1.5nF
1
TP
15
+
-
3
4
1
5
2
U15
NI
1
TP34
C47
2.2nF
C8
7
0.
1uF
C8
8
1uF
R16
NI
DNI
C48
0.1uF
C46
0.1uF
R116
0E
R118
0E
C89
NI
DNI
C90
NI
DNI
C92
NI
DNI
C91
NI
DNI
R35
100K
R117
100K
ADS_DVDD
ADS_DVDD
ADS_DVDD
VCC_3_3
ADS_DVDD
AVSS
ADS_AVDD
AVSS
AVSS
ADS_AVDD
AVSS
ADS_AVDD
AVSS
ADS_DVDD
ADC_GPIO2
ADC_GPIO1
ADC_CLK
ADC_CS
ADC_START
ADC_SCLK
ADC_RESET
ADC_DRDY
RESP_MOD_M
ERL
RESP_MOD_P
ADC_CLK_SCL
ADS_
AVDD
AVSS
ADC_DOUT
ADC_DIN
AVSS
AVSS
ELL