Forum Post: RE: Output impedance of TX-SDK-V2 and power supply board
Hi Dmitrijs, Impedances: The pulser ( LM96550 ) output on the TX-SDK-V2 board is "loaded" to simulate a transducer. If you like to attach an external transducer, you'd have to remove the "load"...
View ArticleForum Post: RE: LM98620 soft reset
Hello Jim-san Thanks for your replay! I understand. Best regards.
View ArticleForum Post: RE: Output impedance of TX-SDK-V2 and power supply board
Hi Hooman, Thank you for your response! Impedances: Since CB51 to CB58 = 330pF & RB0 to RB8 = 2.49kΩ are there only to model the transducer, is there any reason to keep RB0 to RB8 when connecting...
View ArticleForum Post: RE: Output impedance of TX-SDK-V2 and power supply board
Hi Dmitrijs, Removing shunt resistive load : All LM96550 Electrical Characteristics are with RL= 2kohm. That's the purpose R80 to R88 serve. Having the resistance or not may affect some of the AC...
View ArticleForum Post: RE: Output impedance of TX-SDK-V2 and power supply board
Hi Hooman, Thank you for this information! Replacing the load with a single series 50Ohm resistor: the reasoning for doing this is that it would be much easier for me to electrically match the external...
View ArticleForum Post: Lay out files of TX-SDK-V2
Hello support, I'm working on ultrasound evaluation board TX-SDK -V2. for debugging something I need the layout of board. I wanted to ask if it's possible to give me the lay out files of this board....
View ArticleForum Post: RE: Output impedance of TX-SDK-V2 and power supply board
Hi Dmitrijs, I've talked to the LM96550 designer and here is what he said: "The pulser can drive 50 Ohms. It’s just that the swing is reduce because of the output impedance is about 5 Ohms. So the...
View ArticleForum Post: RE: Lay out files of TX-SDK-V2
Hello Parisa, I am moving your post to the correct forum.
View ArticleForum Post: Error 91 occured at Variant to data in TSW1400.lvib:Frame.vi...
Whan i press the initialize button on AFE5818 EVM GUI, the following error was shown at TSW1400 HSDC Pro GUI Which is shown as following lines and also i attached image file Error 91 occured at Variant...
View ArticleForum Post: RE: Lay out files of TX-SDK-V2
Hello Parisa, I tried to locate board design files to share with you, but I have not been able to locate any. May be I can answer specific questions you may have about the board? Please let me know....
View ArticleForum Post: RE: Lay out files of TX-SDK-V2
Hi Hooman, I didn't know how to answer the email to you. I have a lot of problem with board. Several times it blew up so I replaced three IC's. My project this board is used as transmitter. I need to...
View ArticleForum Post: AFE5808A VREF question
Hi there, We are using AFE5808A for medical ultrasound system. If we decide to use internal reference for ADC, how should we connect pin VREF_IN and REFP and REFM. Is it ok to float all three pins?...
View ArticleForum Post: LM98725 - thermal Problems
Hi everyone, we are currently developing an Application using 4 of the LM98725 . From our first tests we saw that the AFE is getting a bit hot. We measured TC 80°C (at the case) when running at...
View ArticleForum Post: RE: Lay out files of TX-SDK-V2
Hi Parisa, Sorry about the troubles you've been going through. I will send you what I have if you provide an email address that I can use. Hopefully we can work through your issues. Regards, Hooman
View ArticleForum Post: RE: LM98725 - thermal Problems
Hi Christian, Please refer to the thermal modeling of the LM98725 attached: (Please visit the site to view this file) The model shows the top of the case being pretty close in temperature to the...
View ArticleForum Post: RE: Output impedance of TX-SDK-V2 and power supply board
Hi Hooman, Thank you so much for your response! Output impedance of LM96550 : it is definitely very good to know that LM96550 should be able to handle the low loads on the order of 50 Ohms. The...
View ArticleForum Post: RE: LM98725 - thermal Problems
Dear Hooman, This was exactly the information i was looking for! Let me really thank you for perfectly anserwing my question! We are using actually a 6Layer Board, but we are just using some few vias...
View ArticleForum Post: Are there any ways to faciliate the AFE5809 configurations?
Hi, TI experts: I am using the AFE5809 to design one project. I found there're lots of registers inside the datasheet. i found one tool named as AFE5809EVM GUI, while the prerequisite is the EVM board...
View ArticleForum Post: RE: LM98725 - thermal Problems
Dear Hooman, one last question maybe. In the simulation there is stated 0m/s airflow. So it is assumed that there is no additional airflow, or is it meant that there is no air convection, which will...
View ArticleForum Post: RE: LM98725 - thermal Problems
Hi Christian, You are welcome! The 0m/s air flow means no forced air (no fan). Natural convection. Regards, Hooman
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