DRV401: Unused pin

ttd

Mastermind 9335 points

Part Number: DRV401

Dear Technical Support Team,

I'd like to use external differential amp with DRV401 instead of internal differential amp, so these pins can be open?

6 pin ：Vout

7 pin：IA in2

8 pinj：IA in1

Best Regards,

ttd

over 8 years ago

0 Mayrim Verdejo over 8 years ago

TI__Genius 15770 points

Hi ttd

I believe this is not possible but I will have one of our DRV experts to look at your question today.

Mayrim

0 Javier Contreras4 over 8 years ago in reply to Mayrim Verdejo

TI__Mastermind 34580 points

Hello ttd,

You can bypass the output amplifier. If you are measuring higher frequencies >50KHz you may look at the CMRR of you external amplifier as the common mode of the Icomp pins can change abruptly during the compensation.

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DRV401: Unused pin