User's Manual

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A1
TIA
VARIABLE
BIAS
Vref
DIVIDER
CE
RLOAD
RTA
TEMP
SENSOR
RE
WE
INTERFACE
AND
CONTROL
REGISTERS
NC C1 C2 DAP AGND
VOUT
DGND
MENB
SDA
SCL
VDDVREF
I2C
LMP91000
Configurable Potentiostat AFE
LMP91000SDE/NOPBTR-ND
U5
LMP91000SD
G N D
VD D
G N D
VD D
G N D
SDA
SCL
C2_P0_1
G N D
G N D
VOUT _P0_0
VR EFG N D
G N D
G N D
G N D
G N D
Ve+
1
Ve-
2
3
3
10F7941
S1
LM4120AIM5-2.5
RE F
1
G N D
2
EN
3
IN
4
O UT
5
LM4120AIM5-2.5CT-ND
U4
CE
WE
RE
VD D
1uF 6.3V
12
DNP
C29
0.1uF 10V
12
C30
1uF 6.3V
1 2
DNP
C31
1uF 6.3V
12
DNP
C32
0.1uF 16V
1 2
C24
0.1uF 16V
12
DNP
C26
56pF 50V
12
C27
0 ohm
R18
0 ohm
R22
0 ohm
DNP
R21
0.022uF 16V
12
C25
0.022uF 16V
12
C28
10.0 kohm
R19
10.0 kohm
R20
0 ohm
R43
VREF EXPECTED 2.5V
DNP = DO NOT POPULATE AT ASSEMBLY
BLE and AFE Section www.ti.com
Figure 5-3. AFE Section
28
Schematics and Bill Of Materials SNOA922–April 2013
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