INA240-Q1: How much output voltage swing with negative input and VREF1=VREF2=GND is?

Yoshiki Ochi

Part Number: INA240-Q1

Hi team,

How much output voltage swing with negative input and VREF1=VREF2=GND is?

Is it stick to GND? For example, IN+ = GND and IN-= 0.2V with VREF1=VREF2=GND, then Vout = GND which is stick to GND, is it correct?

Regards,
Ochi

over 2 years ago

0 kai klaas69 over 2 years ago

Guru 140200 points

Hi Yoshiki,

this is what you get:

joshiki_ina240.TSC

And this with swapped inputs:

Kai

0 Carolus Andrews over 2 years ago in reply to kai klaas69

TI__Mastermind 18780 points

Yoshiki-san,

Kai's simulations show what you can expect if a negative voltage is applied under these conditions. One thing to note here is that our models are built to exhibit typical behavior. The worst case behavior is also specified in the datasheet for this condition, showing that this voltage present may actually be up to 10mV, but typically is around 1mV as is shown in Kai's simulation.

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INA240-Q1: How much output voltage swing with negative input and VREF1=VREF2=GND is?