Texas Instruments INA-DUAL-2AMP-EVM, Руководство пользователя

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2 Quick Start
2.1 Dual-Supply Configuration
Figure 2-1 shows an example of how to set up the EVM for dual-supply operation. These steps can be applied to
channel A or channel B of the dual INA.
TP14
TP17
R17
0
R12
0
R13
GND GND
GND
GND
R19
C21
C18
C16
R11
V+
R8
R10
V-
V+
R21
R22
V-
GND
C15
V+
0.1µF
0
R14
0
GND GND
R16
C20
TP15
R15
VINA-
VINA+
RGA
RGA
1
2
3
4
U2
RefA
VOA
SenseA
V-
5
6
7
8
VINB-
VINB+
RGB
RGB
16
15
14
13
RefB
VOB
SenseB
V+
12
11
9
U3
GND
C22
V-
0.1µF
R32
GND
GND
GND GND
R38
C32
C30
C27 R31
V+
R30
V-
V+
R39
R40
V-
R35
R37
R33
R34
0
GND GND
R36
C31
TP21
GND
GND
C19
R28
C29
TP20
TP22
0
0
R5
R25
0
VOB VOA
VINA-
VINA+
VINB-
VINB+
10
0
GND
GND
V-
V+
TP1
C1
10µF
C2
1µF
C6
10µF
C7
1µF
TP11
GND
OAV-
OAV+
TP2
C3
10µF
C4
1µF
C8
10µF
C9
1µF
TP12
J1 J2
Instrumentation Amplifier
Power Supply
Operational Amplifier Power
Supply
TP8 TP9 TP23 TP24 TP4 TP5 TP6 TP7
1
2
3
1
2
3
Figure 2-1. Dual-Supply Configuration
1. +VS to test point TP1
2. –VS to test point TP11
3. Install jumper shunt to position 1 and 2 on J1
4. Differential input signal connect to test points VinA– (TP14) and VinA+ (TP17) of channel A
a. Differential input signal connect to test points VinB– (TP20) and VinB+ (TP22) of channel B
5. Observe output at test point VOA (TP15)
a. Observe output at test point VOB (TP21)
Note
C15 and C22 are prepopulated with 0.1-µF power-supply decoupling capacitors. See the respective
device data sheet for additional power-supply decoupling information.
Quick Start www.ti.com
4 INA-DUAL-2AMP-EVM SBOU272 – NOVEMBER 2021
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