INA190A1IDCKT POWER ±2.5V?

kevin.huang_FJXM

Expert 2925 points

Other Parts Discussed in Thread: INA190

HI TEAMS

Please confirm it:

Can INA190 be powered by ± 2.5V?

over 4 years ago

0 kai klaas69 over 4 years ago

Guru 140200 points

Hi Kevin,

should work:

kevin_ina190.TSC

Kai

0 Javier Contreras4 over 4 years ago

TI__Mastermind 32700 points

Hello Kevin,

This should work. I would add a capacitor between pins 3 and pin 2 as close to the INA190 as possible. Make sure that all maximum voltages in the datasheet are referenced to the GND pin and you need to make sure you do not go beyond those voltage. From this diagram it looks like you are ok.

0 kevin.huang_FJXM over 4 years ago in reply to Javier Contreras4

Expert 2925 points

Kai & Javier:

thank you.

0 kevin.huang_FJXM over 4 years ago in reply to kevin.huang_FJXM

Expert 2925 points

Hi Teams:

If you use positive and negative power supply, please confirm that you can collect positive and negative voltage and output positive and negative value?

(voltage ± 2.5V, input ± 40mv, amplification 25 times, output ± 1V)

0 Javier Contreras4 over 4 years ago in reply to kevin.huang_FJXM

TI__Mastermind 32700 points

Kevin,

Yes the output voltages will be confined by the voltages at the supply pins. So having a negative 2.5V on the GND pin will allow the voltage to get to about 1mV of the -2.5V due to swing low operations. Same applies the the output limitations on the high side with VS pin.

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INA190A1IDCKT POWER ±2.5V?