Forum Post: RE: Need help in using TX_SDK_V1
Hi Frank, The -50V supply only goes to the LM96551 and the VSUB supply goes to LM96551 & LM96530 . I have no idea why it would effect the LM96570 . It doesn't make any sense. You are correct that...
View ArticleForum Post: LM96550
Hi, I design a board for beamforming use LM96570 and LM96550 . I follow the power up steps in evaluation board TX-SDK-V2 user guide. Every time I power up +/-50v, and +/- 40V power supply the board is...
View ArticleForum Post: RE: LM96550
Hello Yuan, Welcome to TI E2E forum. I am moving your post to the correct forum that handles LM96550 .
View ArticleForum Post: RE: LM96550
Hi Yuan, How do you power up the +50V(VPP) and +40V(VPF)? Do you power up the 50V first and then the 40V? You would damaged the device. From page 13 of the user guide, Regards, Charles
View ArticleForum Post: RE: LM96550
Hi Yuan, Sorry, the image from page 13 of the user guide didn't paste properly. I'm just going to re-write it. "Caution: To prevent fatal device damage, VPF>=VPP-14V and VNF<=VNN+14V at ALL...
View ArticleForum Post: RE: LM96550
I power up the 50V and 40V at the same time. And it still burned up. Thank you very much for your help.
View ArticleForum Post: RE: LM96550
Do you mean that I should power up the power supply +/-10 v first and then the +/- 50v, so that the +/- 40v and +/-50v can be powered up at exactly at the same time ? For I just at first manually power...
View ArticleForum Post: RE: LM96550
You can use the configuration in figure 5 of the user guide (page 12) to power up and down the TX_SDK_V2 board.
View ArticleForum Post: RE: LM96550
Yes, when I testing the board, I use the configuration in the figure five to power up and follow the power up sequence in next page too, but the burned up problem there....
View ArticleForum Post: RE: LM96550
So when did you power up the +/-10V? When powering up, did you follow the sequence in figure 5 highlight in purple circles? When powering down, follow the sequence shown in blue circles.
View ArticleForum Post: LM98640 differential signal nomenclature confusion
Figure 1 of datasheet shows digital outputs in differential form. As differential output has two polarity, it is shown as TXFRM+ and TXFRM-. In diagram,. TXFRM+ is coming with 'o' symbol and TXFRM+ is...
View ArticleForum Post: RE: Need help in using TX_SDK_V1
Hi Charles, We'v found the reason why the chips are damaged and we'v solved the problem. The switch we use is a mechanical switch, and when we power on, the +50V power goes up very quickly. Since there...
View ArticleForum Post: RE: Need help in using TX_SDK_V1
Hi Frank, I'm glad that you found and fix the problem. Regards, Charles
View ArticleForum Post: RE: LM98640 differential signal nomenclature confusion
Hello, Sorry about the delay in getting your question answered. I've contacted the person in charge to respond to you and since he is travelling, he'd get back to you within 48 hours from now. Regards,...
View ArticleForum Post: RE: LM98640 differential signal nomenclature confusion
Thank you for pointing out that error It will fixed in the next available revision of the datasheet A new revision is about to be posted. I will see if I can pull it back to include this fix
View ArticleForum Post: Bit CLP mode enable for LM98725
Hello! We try to use AFE LM98725 in our image board. We can not clearly understand some about register: page 0, addr 3, bit 5. Bit 5 - Bit CLP mode enable. What does it mean? Thanks.
View ArticleForum Post: AFE58JD18 request
Hi I want to know AFE58JD18 device support LVDS output and demodulator. thanks
View ArticleForum Post: RE: AFE58JD18 request
Kang, I've moved this post from the /etc...Data Converters Forum to the Imaging AFEs Forum. I'm not absolutely positive this is where the post belongs, since I see limited references to this part in...
View ArticleForum Post: RE: AFE58JD18 request
Thanks Joseph, Kang, you are correct, LVDS and Demodulator are featured in this device. Chuck Smyth
View ArticleForum Post: RE: Bit CLP mode enable for LM98725
Hello, Regarding your question on LM98725 CLP mode Enable: When enabled, Bit CLP mode closes the input clamp switch during the reference period of every pixel in the line. It is similar to what is...
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