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Altera_Forum
Honored Contributor I
724 Views

Terasic THDB_ADA question

Hi~~I have some questions about THDB_ADA 

 

1) what's the ADC output data format? 

i found the AD9248's datasheet. there were two data output format, 

offset binary and two's complement. what kind of data format is the  

THDB_ADA 's output format?? 

 

2) i used logic analyzers to analysis THDB_ADA output 14 bits status, why the 

bit 9 of ADC always stuck at '1'.
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Altera_Forum
Honored Contributor I
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1. It's a hardware pin-strap option, as you can see in the datasheet. If I understand right, it's set to offset binary. 

2. Incorrect connected LA probe or a hardware fault.
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