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Forum Post: RE: Questions about TX-SDK-V2 EVB
Hi Friday,Sorry you can't see the schematic. Let's try again. The schematic is not on the LM96511 datasheet. It's part of our internal demo board. As you can see from the schematic, the external diode...
View ArticleForum Post: RE: Questions about TX-SDK-V2 EVB
Hi Charles, any news for the power supply release ?Best regards.
View ArticleForum Post: RE: AFE5808
Chandu,The purpose of the VCNTL pins are for Time-Gain Compensation (TGC), where the gain of the VCAT block is varied over time. This can be used in the ultrasound system to offset natural attenuation...
View ArticleForum Post: RE: Questions about TX-SDK-V2 EVB
Hi Olivier,We are hoping we can release the power module schematic to web later this week.Regards,Charles
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Forum Post: RE: Ultrasound transducer interface to pulser outputs
Hi, Actually I have designed individually customized boards for the pulser(lm96550), Beamformer (lm96570), tx/rx switch (tx810) with reference of Tx_sdk_v1. The below Image shows the beamformer...
View ArticleForum Post: RE: AFE5808
For medical diagnosis to get Time gain compensation, Can you suggest me VCNTL analog signal. I think it is ramp, but I can't understand what should be the frequency. On what criteria the analog signal...
View ArticleForum Post: AFE5809 Speed Grade
Hi,Could someone please provide for me the speed grade of the AFE5809?I need this to set up the ALTPLL on my Cyclone V.Also are there any examples on LVDS with the AFE5809?Thanks!Jack
View ArticleForum Post: RE: Ultrasound transducer interface to pulser outputs
Hi Chandu,Does the pulser output get less distorted when you set B3B2B1 to 000 or 001? I am not familiar with the TX810. However, looking at fig 14 of the TX810 datasheet, it might loading the output...
View ArticleForum Post: RE: multi AFE5808
Hi Ly,1. Why not? Sure you can2. Vcntl input resistance of AFE5808 is 200kOhm. Connecting 32 devices in parallel gives you 6250 Ohm. Max TGC voltage is 1.5V, therefore you require 240uA. Max output...
View ArticleForum Post: RE: AFE5809 Speed Grade
Hi Jack,AFE5809 is 65MSPS. Regarding the LVDS I understand you mean deserializer. I'm not an expert on Altera FPGA's, I use Xilinx. I think you should ask this question on Altera forum. However, take a...
View ArticleForum Post: RE: Ultrasound transducer interface to pulser outputs
Hi Chandu,You don't need any special cable interfacing to the output of the pulser. Is it possible you can post the schematic of your design?Regards,Charles
View ArticleForum Post: RE: Ultrasound transducer interface to pulser outputs
Hi Chandu,1) Remove 220pF capacitor.2) Remove 2.2K resistor.3) Connect the pulser output to the transducer using a 50Ohm well shielded cable.4) Now observe the signal at input and output of the T/R...
View ArticleForum Post: RE: multi AFE5808
Hi Mariusz,Thanks for your help and time.Best Regards,Ly Nguyen
View ArticleForum Post: RE: AFE5808
Mariusz, thanks for answering the quesitons! i agree with you that TGC frequency is not a common term. Our AFE5808/9 datasheets use pulse repetition frequency (PRF) since it is a more common term in...
View ArticleForum Post: Connecting inputs of TX810
Hi,Currently we're designing a small ultrasound device for development and research. We are interested in using TX810. In our system high-channel count or power consumption aren't most important...
View ArticleForum Post: Need help on project based on TI's portable ultrasound
HiIam doing my final year project based on the TIs portable ultrasound at http://www.ti.com/solution/ultrasound_system_portable. But i have some questions :- Since the TI's system is of 8 channel what...
View ArticleForum Post: RE: need help on 16 channel US pulser
Hi Naftali,Are you using the LM96551 or the LM96550 pulser? If you are using the LM96551, the +/-40V is built it already. If you are using the LM96550, please use the power up sequence on page 10 of...
View ArticleForum Post: RE: Connecting inputs of TX810
Damian,I believe it is possible to connect several channels in parallel. Is that what you are trying to do? Inputs shorted together and outputs shorted, as well? You can reduce Ron by doing so, but...
View ArticleForum Post: RE: Ultrasound transducer interface to pulser outputs
Hi Mariusz,If you look at Chandu's post on Dec. 18, he mentioned just when T/R switch is NOT connected to the output of the pulser, he saw no visible distortion. However, when he connect the T/R switch...
View ArticleForum Post: RE: Ultrasound transducer interface to pulser outputs
Hi, previously when I am using switch and pulser boards seperatly, pulser o/p are connected to switch i/p and transducer using normal female connectors then I got the distortion problem. I planned...
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