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INA4180-4181EVM Circuit
5
SBOU189 – November 2017
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Copyright © 2017, Texas Instruments Incorporated
INA4180-INA4181 Evaluation Module User's Guide
4
INA4180-4181EVM Circuit
This section summarizes the INA4180-4181EVM components. For the following instructions, x = 1 to 8.
These section refers primarily to channel 1 test points of each board. Refer to
Table 4
for test points
equivalence for other three channels.
Table 4. Components designators by channel
COMPONENT
CHANNEL 1
CHANNEL 2
CHANNEL 3
CHANNEL 4
Input filter resistors
Rx1 and Rx2
Rx3 and Rx4
Rx5 and Rx6
Rx7 and Rx8
Input filter capacitor
Cx2
Cx3
Cx4
Cx5
Voltage inputs
IN+1, IN-1
IN+2, IN-2
IN+3, IN-3
IN+4, IN-4
Reference Voltage
REF1
REF2
REF3
REF4
0-
Ω
resistors to connect REF pins to
GND
Rx10
Rx11
Rx12
Rx13
4.1
Input Filters: Rx1, Rx2, Rx3, Rx4, Rx5, Rx6, Rx7, Rx8,Cx2, Cx3, Cx4, Cx5
Rx1 and Rx2 are factory-installed 0-
Ω
resistors. These resistors, in combination with Cx2, form an input
filter. These locations allow for 0805 surface-mount package size. Additional information regarding the use
of input filtering is provided in the
INA4180
and
INA4181
product data sheets.
4.2
Bypass Capacitors: Cx1
Cx1 are 0.1-
μ
F supply bypass capacitors.
4.3
Ux
Ux is the location for the test device. Eight device boards are supplied with the INA4180-4181EVM board.
Each board is populated with one of the available device gains. This option enables users to test the
devices and determine the gain setting that is best suited for a given application.
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