I recently got the AD9957 eval board. On power up, the board draws ~25 mA at 1.8V and ~50 mA at 3.3V. The problem: the PC does not recognize the USB device (and I have tried it with three different PCs).
I transferred your message to a new discussion thread on our forum.
We spoke on the phone briefly yesterday. Did you try the evaluation software available from the AD9957 product page instead of what came on the CD in the evaluation kit? The version on the product page is version 0.1.1 but I'm checking with DSB to see if there is a newer version available.
Yes, I did try the other version however I am afraid things
remain the same. Also, I got the input that the power-up current is around
300mA at 1.8V and 80mA at 3.3V.
The board we have consumes far less.
I think the board is defective, may I ask you to please have a new working
board sent to us. Also, please have it sent as sample as we have already
the paid the customs duty for the board.
On Tue, May 15, 2012 at 8:40 PM, Kevin.G <
Even though the current consumption is low, it could be possible that the part is somehow powered down via the EXT_PWR_DWN pin. Can you double check that the evaluation board jumpers are set correctly for PC Control?
When we spoke, did you say you were getting an error message? Do you see the board connected when you go into Device Manager?
I believe we made the right jumper connections. I will double
check them today.
Yes, I get an error message that the USB device malfunctioned.
On Tue, May 15, 2012 at 11:22 PM, Kevin.G <
Can you post a screenshot of the error message?
A FAE from Analog Devices visited our lab and confirmed that the
board is damaged (after inspecting the board for jumper setting, software
installation and physical damage).
He has taken the board back with him (this was yesterday (17th May)).
We have to respond to our customer with a block diagram of our proposed
architecture for which we need to evaluate the AD9957.
We cannot give the reason of a defective board to our customer. We have
been using ADI devices all along and would like to continue with same. Our
customer might insist on looking into TI solutions as well.
The team in India is saying that it will take at least 10 days for the case
to be processed (the board will be shipped back to US for inspection). We
do not have those many days and at the same time we have already lost a
May I ask you to please expedite the process, if possible please have
another board shipped to us immediately. We had requested for a shipment
today itself so that it would reach us by Monday.
Looking forward to some prompt action from ADI,
On Wed, May 16, 2012 at 5:55 PM, Kevin.G <
The expedite request should be worked through the FAE with whom you have been working. I'll take this as a heads up to check and make sure that there are not any unnecessary obstacles in the path.
Jeff Keip (Product Marketing for AD9957)
Thank you for your support.
On Fri, May 18, 2012 at 7:56 PM, JLKeip <
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