Forum Post: RE: Bit CLP mode enable for LM98725
Hello, Hooman! Thank you for your answer. Elnur.
View ArticleForum Post: board adapter
Hi. I have an AFE5851 EVM and I want to connect it to the TSW1400 EVM. Could you tell me what is the adapter's name and where to buy this adapter Regards Marcelo Márquez
View ArticleForum Post: RE: LM96550
Hi, I meet a problem about LM96550 and LM96551 : Can I replace LM96550 with LM96551 directly? I look at their datasheet, these two and pin to pin compatible. But I notice that LM96551 don't need +/-40...
View ArticleForum Post: RE: LM96550
Hi Yuan, Yes, you can replace the LM96550 with the LM96551 . In the LM96551 , you should connect put 10uF || 0.1uF bypass caps between VPP (pins 4-7 & 54-57) and VPF (pins 8 & 53). Similarly,...
View ArticleForum Post: DC bias on LM96530
Hi TI's ananlog expert, We are using the TX_SDK_V1 evaluation board. We found that when we turn on the LM96530 receiving channel, the output of the LM96530 will have a DC bias which will add low...
View ArticleForum Post: LM98725 black calibration
Hello! We try to use AFE LM98725 . We have some trouble with black calibration ("Black Calibration Only"). According to the documentation (Revision H), registor "Calibration # Lines" (Page[2], Addr [1]...
View ArticleForum Post: RE: DC bias on LM96530
Phx, I am moving your post to the Imaging AFEs Forum.
View ArticleForum Post: RE: DC bias on LM96530
Hi, Usually, the output of the LM96530 is AC coupled to the receiver. Or you can put a 50 Ohm resistor from the output to ground. Regads, Charles
View ArticleForum Post: RE: DC bias on LM96530
Hi, Thank you for your reply. We use the AFE5803EVM to receive the output of the TX_SDK_V1. So the output of the LM96530 is AC coupled to the receiver. LM96530 OUTPUT AFE5803 INPUT Later we change the...
View ArticleForum Post: RE: DC bias on LM96530
Hi, Can you double check that the LM96530 is turn on by looking at the supply current for the LM96530 ? Regards, Charles
View ArticleForum Post: RE: DC bias on LM96530
Hi, Charles, Thanks for your reply. I am sure the LM96530 is turned on for the +-5V power supply's current is 0.075mA and dropped to 0 when turn off the 8 channel of the LM96530 . Besides, only turn on...
View ArticleForum Post: RE: DC bias on LM96530
Hi Phx, I think you mean 75mA right? How about changing the 2.5KOhm output resistor (from output to ground) to 500 Ohm and/or increase the Rref resistor by redcucing the Icc? Looks like the offset is...
View ArticleForum Post: RE: DC bias on LM96530
Hi Charles, Thanks for your help. Sorry, I made a mistake. The the +-5V power supply's current is 0.075A and dropped to 0.013A when increase the Rref resistor from (RREF = 6.25 kΩ → IS = 8mA) to (RREF...
View ArticleForum Post: RE: DC bias on LM96530
Hi Phx, What signal is at the input of LM96530 ? It's around 100KHz too? If it's, there would be capacitive coupling from the input. Regards, Charles
View ArticleForum Post: RE: DC bias on LM96530
Hi Charles, The jumper between the LM96551 and LM96530 is taken away. So there is no input signal of LM96530 . Later we found that when all power off except VSUB, the low frequency noise still exist....
View ArticleForum Post: Question about Power module schematic for TX-SDK-V1
I've looked through the reference design and I got confused about the ±50V part. The flyback switch power design used a transform named T2, and in the last page of the reference document, there are...
View ArticleForum Post: RE: DC bias on LM96530
Hi Charles, Thank you very much. The noise comes from the power supply. The picture shows the power supply noise. And I think you are right. The DC offset comes from the leakage current. Now the DC...
View ArticleForum Post: TSC2100 Keyclick sound very low
Hello I am working with the TSC2100 programmable touchscreen controller. I am looking for the generic WinCE drivers which are described here: www.ti.com/.../slaa198.pdf The problem: The keyclick sound...
View ArticleForum Post: RE: Question about Power module schematic for TX-SDK-V1
Hi, I'll contact the person that design the power module for you. I am not an expect in this field. But don't you just need to know the power in order select the size. Max power the for +/-50V should...
View ArticleForum Post: RE: LM98725 black calibration
Hi Elnur, Sorry about the delay in responding to your question. I've contacted somebody more familiar with the LM98725 about your question, but he won't be back in office until tomorrow Friday. I'll...
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