Datasheet

INA216EVM Circuit

www.ti.com

3 INA216EVM Circuit

This section summarizes the INA216EVM components.

3.1 R1

R1 can be used for shunt resistors that have a package that is not easily adaptable to a standard,

two-terminal, through-hole footprint or to a 0603 through 1206 surface-mount footprint. Specifically, this

component location was added to allow for the use of TO-126, TO-220, TO-247, and four-terminal inline

radial packages such as the CS3 series of shunts from Ohmite. The numbers located on the PCB

between R1 and J1 correspond to each of the holes in the R1 footprint. Holes with the same number are

connected together. The designation of 1 and 2 indicates that particular hole is connected directly to the

IN+

and V

IN–

inputs, respectively. The designation of 3 and 4 indicates that particular hole is intended for

the sense measurement of a four-wire shunt.

Care must be taken to ensure that the shunt is placed in the correct position in the R1 location. This

placement consideration is evident when using a two-connection shunt with a spacing of 200 mils (.200in

or 5,080mm). As shown in Figure 4 through Figure 7, the shunt must be placed in the second

1-designated hole in order for the other leg to fit into the 2 position. If the shunt is placed in the first 1

position, the second leg is left floating; no differential voltage is then generated for the current monitor.

Additional packages can be tested by using the provided prototype area of the board.

Figure 4. TO-247 Package in R1 Figure 5. CS3 Package in R1

INA216EVM SBOU086–August 2011

Submit Documentation Feedback