INA1620: Single power supply connection

Mikhail Isagulov

Prodigy 120 points

Part Number: INA1620

Dear mr,

For single power supply INA1620 data-sheet recommend picture below

It mind I should connect my GND to pin5 (VEE of datasheet)

and according picture pin 3 (GND of data-sheet) stay floating.

Am I right?

over 2 years ago

0 kai klaas69 over 2 years ago

Guru 140200 points

Hi Mikhail,

you want to power the circuit with a bipolar supply voltage?

Kai

0 Mikhail Isagulov over 2 years ago in reply to kai klaas69

Prodigy 120 points

No, I would like single supply, but didn't understand connection pin 3 and 5.

Thank you

0 kai klaas69 over 2 years ago in reply to Mikhail Isagulov

Guru 140200 points

I would connect the VEE pin and the GND pin of INA1620 to signal ground (the minus pole of 9V battery). It's true that the GND pin of INA1620 is only for the enabling, but the GND pin should not be left floating.

Kai

+1 Chris Featherstone over 2 years ago in reply to Mikhail Isagulov

TI__Mastermind 23630 points

Mikhail,

Kai is correct on the connection. For single supply operation, you should connect pins 3 and 5 to GND.

Best Regards,

Chris Featherstone

+1 Mikhail Isagulov over 2 years ago in reply to Chris Featherstone

Prodigy 120 points

Thank you and Kai

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INA1620: Single power supply connection