OPA2210: Thermal Pad Connection WSON Package

Masakazu Adachi

Intellectual 2500 points

Part Number: OPA2210

Hi team,

The OPA2210 Exposed Thermal Pad, where should I connect it to?

Can I connect it to the solid pattern of floating potential?

Regards,

Masakazu

over 3 years ago

+1 Clemens Ladisch over 3 years ago

Guru 317250 points

The pad must be soldered to the board. It can be connected to V– or be left floating.

0 Masakazu Adachi over 3 years ago in reply to Clemens Ladisch

TI__Intellectual 2500 points

Hello Clemens,

I understand. Thanks to the support.

Regards,

Masakazu

0 Masakazu Adachi over 3 years ago in reply to Masakazu Adachi

TI__Intellectual 2500 points

Hello Clemens,

I have two additional questions.

1. Is there a potential that you expect to connect to in design?
Is the thermal pad electrically connected to the V-?

2. Are there any pins that should not be connected?

Regards,

Masakazu

+1 Clemens Ladisch over 3 years ago in reply to Masakazu Adachi

Guru 317250 points

1. As far as I know, the thermal pad is connected with eletrically conductive glue to the substrate, which is at the V– potential.

2. Unused outputs can be left open. Unused inputs must be not be left floating. The easiest way to connect an unused opamp is to configure it as a voltage follower with any voltage inside the common-mode input range.

0 Masakazu Adachi over 3 years ago in reply to Clemens Ladisch

TI__Intellectual 2500 points

Hello Clemens,

Thanks to the support.

So, the thermal pad should not be connected to any pins other than V- or be left floating, right?

Which is better V- or floating?

Regards,

Masakazu

+1 kai klaas69 over 3 years ago

Guru 140200 points

Hi Masakazu,

the thermal pad needs to be connected to V-.

https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1062249/opa2210-thermal-pad-connection

Kai

+1 Tamara M Alani over 3 years ago in reply to Masakazu Adachi

TI__Genius 10850 points

Hi Adachi-san,

Thank you for your post. Kai is correct, please connect the thermal pad to V-. Please see this note for correct PCB attachment as well: https://www.ti.com/lit/an/slua271b/slua271b.pdf

0 Masakazu Adachi over 3 years ago in reply to kai klaas69

TI__Intellectual 2500 points

Hello Kai,

I understand.

Thanks a lot!

Masakazu

0 Masakazu Adachi over 3 years ago in reply to Masakazu Adachi

TI__Intellectual 2500 points

Hi Tamara-san,

Thanks to introduce it!

Best wishes,

Masakazu

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OPA2210: Thermal Pad Connection WSON Package