Possible low frequency (<400kHz) capability on the THDB_ADA board?

[Altera_Forum]

I know there is a way to desolder a transformer on the DAC part of the THDB_ADA board, to achieve low frequency single ended output. 

 Can a similar thing be done to the ADC circuitry in order to achieve ADC capability down to about 20-30 Hz?  Thank you.

[Altera_Forum]

I suggest to refer to the AD9248 datasheet for possible solutions. There's an option to use the ADC in single ended configuration, although it involves a certain performance degradation. It would need an additional voltage divider bypassing the +input to Vcc/2 and a large input coupling capacitor, e.g. 10 µF ceramics. 

 My personal favourite is a DC capable fully differential amplifier as single ended to differential converter, as used in the AD9248 evaluation board, the schematic is also included in the datasheet.

[Altera_Forum]

can you guide me how to desolder a transformer on the DAC and ADC part . How to solder a new transformer ?? 

Did you find any solution for the low frequency range. I am trying to load a 100 Hz signal into the ADC.

[Altera_Forum]

There are no suitable transformers to be used instead of the RF transformer. 

 A simple modification could be made like below, needing an input Signal with DC Offset.  https://www.alteraforum.com/forum/attachment.php?attachmentid=11278

[Altera_Forum]

I am using a Stratix III DSP development board. Our HSMC AD/DA data conversion card consists of MCL 045 transformer of TT1-6 for each ADC and DAC. For this transformer what modification is required for low frequency input ?

[Altera_Forum]

What is the modification needed for the DAC?