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THVD8000EVM: EVM population and setting differential voltage (BA)

Part Number: THVD8000EVM

Hi team,

my customer is currently evaluating THVD8000EVM. They have the following questions:

  • Some resistors are not populated, such as R8/R9/R10/R11. Why is that the case?
  • They would like to reduce the differential voltage (BA) to save filter space.
    • How can this be done on the EVM to test?
  • F_SET: Is it possible to go higher than 5MHz?

Thanks!

  • Hi Franziskus,

    Some resistors are not populated, such as R8/R9/R10/R11. Why is that the case?

    These resistors specifically allow for the implementation of an external failsafe biasing network. This is not a requirement for the device, but the footprints have been included if anyone wishes to evaluate the device with such a circuit. Similar footprints for optional functions such as pull-up/pull-down resistors and additional termination placements are commonly on many of our EVMs

    They would like to reduce the differential voltage (BA) to save filter space

    The differential voltage generated by the IC not programmable, but the achievable output is dependant on the bus load. If a larger resistive load is included (smaller R12), then the output voltage will be attenuated. 

    F_SET: Is it possible to go higher than 5MHz?

    5MHz is the upper limit of carrier frequencies supported by this device. While higher speeds may be achievable, the driver was not designed so support such operation.

    Let me know if you have any more questions. 

    Regards,
    Eric Schott