Powering OP choices

Neousys-Brad on Sep 24, 2013

Now I am designing a 16-bits A to D PCI-E card, I plan to use ADA4817 (1st stage), ADA4938 (2nd stage, ADC driver), AD9650 (ADC, 16 bits, 80M).

For powering OP, I need +/- 5V.

Before I did it with linear regulation, then I notice ADI application note AN-1211

"Powering the AD9268 Dual Channel 16-Bit, 125 MSPS Analog-to-Digital Converter with the ADP2114 Synchronous Step-Down DC-to-DC Regulator for Increased Efficiency".

My question is, if I want to use similar way of AN-1211 for +/-5V power, what choice do I have from ADI?

(Now I have 3.3V and 12V power from PCI-E Slot)

Thanks for your help.

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0 ADIApproved

on Sep 24, 2013 4:38 AM
Hi, Neousys-Brad.

Thank you for using ADI products. With regards to +5V supply, there are many dc-to-dc buck regulators that can produce +5V from a 12V supply such as ADP2301, ADP1613, etc. For the -5V you may try ADP161X or ADP1621. You may also want to try the free ADIsimPower Design tool which will be very helpful in designing your power supply circuits. Or you may want to download the excel-based design tools which can generate the full schematic and bill of materials.

You may see and download it here - www.analog.com/ADIsimPower

Hope this helps!

Regards,

Anna
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0 ADIApproved

on Sep 24, 2013 4:38 AM
Hi, Neousys-Brad.

Thank you for using ADI products. With regards to +5V supply, there are many dc-to-dc buck regulators that can produce +5V from a 12V supply such as ADP2301, ADP1613, etc. For the -5V you may try ADP161X or ADP1621. You may also want to try the free ADIsimPower Design tool which will be very helpful in designing your power supply circuits. Or you may want to download the excel-based design tools which can generate the full schematic and bill of materials.

You may see and download it here - www.analog.com/ADIsimPower

Hope this helps!

Regards,

Anna
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