Original question:
Tool/software:
hello.
I would like to inquire about the INA296A2QDDFRQ1 pcb pattern.
From shunt resistance
Each pattern is connected to pins 1 and 8 of INA296A2QDDFRQ1.
In this case, does the pattern have to be the same length?
To match the pattern length, I set the pattern as follows.
If the pattern length must be the same. Please check if you can do the following.
Especially the blue circle part.
I turned around like the blue circle to match the pattern length on both sides
vcc is 5v As you can see in the circuit, the reference voltage is 2.5v. In this case, 5v is delivered through dcdc buck. If the error rate of vcc is +/- 5% Does the vref voltage have +/- 5% error? Due to these problems, other manufacturers An opamp is recommended for the vref stage.
To the question above
I would like to inquire further
These are pspice simulation results.
The ref voltage is 2.5v.
When a current of 40A flows
The calculation formula should show 1.7V.
But the simulation result is 2.102V
The theoretical equation was calculated as follows:
1m ohm * (-40A) * 20(GAIN) + 2.5V(REF) =1.7V
