INA241 bi directional current sense ? wiring question

[Overspeed]

Hello

The INA2411 allow bidirectional current sense but the TI doc is not very accurate on the bidirectional mode regarding the Ref 1 and 2 connection and th e possible use  of an external reference as the REF5025

Can some have an explanation on how to wire it as bidirectional as INA241 is cheap but I want to avoid '' dummy stupid test ''

Regards
OS

[tszaboo]

Which part isn't clear?
If you connect both Ref pins to ground, your output is referenced to GND, and the output voltage is always positive.
If you connect one Ref to GND, other to 2.5V, then your output is referenced to 1.25V, so 1.5V is positive, 1V for example is negative current.

[Overspeed]

Which part isn't clear?
If you connect both Ref pins to ground, your output is referenced to GND, and the output voltage is always positive.
If you connect one Ref to GND, other to 2.5V, then your output is referenced to 1.25V, so 1.5V is positive, 1V for example is negative current.

Hllo

Thanks

They write in 8.4.3

The INA241x can operate in either a unidirectional or bidirectional mode based on the voltage potential placed on the reference pins.
The linear range of the output stage is limited to how close the output voltage can approach ground as well the
supply voltage as described in the Specifications.

in the link specification :

Supply voltage
(VS)
22 V
Analog inputs,
VIN+, VIN- (2)
Differential (VIN+) − (VIN-) −30 30 V
Common-mode −20 120 V
REF1, REF2,
NC inputs GND − 0.3 VS + 0.3 V

So my question asked from another way :

Does this IC work for biderectional current as 48 V load / 48 charger ? or even 36 Volt as they specify INA241x –5 V to 110 V, Bidirectional ?
Or
Does i ned another IC / circuit

I am not an expert in current sense IC bidirectional

Regards
OS

[tszaboo]

For 48V, you connect the two inputs to a shunt in series with your 48V supply.
Power it from another voltage like 5V.
Connect the REF pins as discussed already.
Inputs will be above the power supply.

Test it of course before deciding. I've had shunt monitors that were supposed to work low side, but they had terrible offset voltage if not used on the high side.

[tszaboo]

Oh, and I just checked for you, TINA-TI has the model of this IC. You can simulate your circuit.

[Overspeed]

Oh, and I just checked for you, TINA-TI has the model of this IC. You can simulate your circuit.

Hello

Ok I will try simulation that better to smoke real components

Regards
OS

[Overspeed]

Hello

Analog doc AD8418 provide a more easiest explanation I link the screen print on '' how that works '' than the TI doc

Regards
OS