INA1650: Unused pins

Gennadiy Poznyakov

Prodigy 140 points

Part Number: INA1650

Hello!

Please tell me what to do with pins 5, 7, 8?

Leave free or?

over 3 years ago

0 Chris Featherstone over 3 years ago

TI__Mastermind 26475 points

Hello,

If the second amplifier is not being used you can make it into a unity gain buffer with the output sitting at mid-supply such that the amplifier is not open loop and railed out. This would be best practice.

Best Regards,

Chris Featherstone

0 Gennadiy Poznyakov over 3 years ago in reply to Chris Featherstone

Prodigy 140 points

This is right?

0 Chris Featherstone over 3 years ago in reply to Gennadiy Poznyakov

TI__Mastermind 26475 points

Gennadiy,

You can potentially connect as shown below. I have also attached the Tina simulation for below.

8510.INA1650 Single Supply.TSC

0 Gennadiy Poznyakov over 3 years ago in reply to Chris Featherstone

Prodigy 140 points

I'm not very good at circuit engineering.

Could you just draw on my diagram how to connect the free pins correctly?

Thank you!

+1 Chris Featherstone over 3 years ago in reply to Gennadiy Poznyakov

TI__Mastermind 26475 points

Gennadiy,

Here is the configuration on your schematic.

Best Regards,

Chris Featherstone

0 Gennadiy Poznyakov over 3 years ago in reply to Chris Featherstone

Prodigy 140 points

Thank you!

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INA1650: Unused pins