STM32H745 maximum sample rate

[mosamasa]

Hi,

I'm looking for baseband processor for my IQ receiver. I would need dual 12-bit ADC with 5.12MSPS rate. I hope to get data from two ADC to DMA syncronously.

I have been looking for STM32H745 for this task. Based on the datasheet, maximum sample rate is 5.5MSPS. It seems that value is given for package UFBGA176+25. I would prefer to use LQFP144 package. Based on AN5354, I can only get 3.63MSPS (12 bit) sample rate.

Is there any way to overcome this issue or do I have to use BGA version?

[STOne-32 · Accepted solution]

Dear @mosamasa ,

Welcome in STCommunity,  your finding is absolutely correct on the Application Note 5354 where basically the choice the package is critical to match the expected ADC performance, where our BGAs have better maximum performance 

 Thanks to better Pin bonding inductance for voltage reference.

STOne-32