How to handle the exposed paddle of the ADC?
The ADC exposed paddle is usually connected to the substrate of the die which is grounded.
On the ADC data sheet, we put a note that tells the customer if the paddle is tied to AGND internally and it is not necessary that they tie anything externally to the paddle. So, there will be no noticeable change in AC and DC performance by floating it or grounding it.
Again, I'd recommend that you refer to the specific ADC datasheet as this varies from device to device.
We have a lot of enquiry regard how best in connecting expose pad "In general". I would like to insert (the Link below), where your community can find out more information regarding Exposed Paddle Connection across many ADI ICs.
Re: AD8045 Exposed Paddle Connection
Thanks Ching for adding the useful information.
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