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ADS52J90: Questions about ADS52J90 input and code resources.

Zhicong Rong
Prodigy 10 points

Part Number: ADS52J90

Hello,

I have some questions about ads52j90 datasheet. I'd like to use the 8-channel input mode of ads52j90 data converter for ultrasound applications, the ADC needs 4 input pins for one channel, I don't know how to set the analog ADC driver properly.

And in the datasheet Page 84, table 40, what does "shorted externally" mean?  

By the way, do you have code resources about ads52j90 in verilog language? Can you provide it to me?

Thanks!

ZC Rong

  • 0
    TI__Genius 12025 points

    Hi,

    Since ADS52J90 device has 16 ADCs inside

    each ADC can connect two of the input INPn & INMn,

    in your case,

    please look at the datasheet page 39 Table 8,

    you can use "Average of ADC1 and ADC2" and then send the averaging data to DOUT1 (better SNR result by averaging)

    and next use "Average of ADC3 and ADC4" and then send the averaging data to DOUT2

    and so on.

    In this case, you need to do some hardware connections

    such as: Please solder INP1, and INP2 (for ADC1), INP3 and INP4 (for ADC2) all together as your single INP input

    and also Please solder INM1, and INM2 (for ADC1), INM3 and INM4 (for ADC2) all together as your single INM input

    In the C:\Program Files (x86)\Texas Instruments\High Speed Data Converter Pro_v5.00\HSDCPro Automation DLL\Manual and Examples

    directory, you can use those code (but not in verilog) and modify them for you on your code.

    Thank you!