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TDC1000-TDC7200EVM: boosting transducer voltage with TDC1000-BSTEVM

Oleg Solovyanov
Prodigy 40 points

Part Number: TDC1000-TDC7200EVM

Looking into the setup of the TDC1000-7200EVM I see fields for HV boost. 

Apparently they are supposed to be used with TDC1000-GASEVM+TDC1000-BSTEVM (same GUI?), but can one attach the BSTEVM to TDC1000-7200EVM board and get a boost?

One has to solder the I/O connector though... Or further modifications are needed?

  • 0
    TI__Mastermind 31655 points

    Hello Oleg,

    The TDC1000-TDC7200EVM can be used with the TDC1000-BSTEVM with some small modifications. First, the IO connector will need to be added as you mentioned, and the resistors connecting TX2/RX1 (R41) and TX1/RX2 (R42) will need to be removed. (The differences between the gas EVM and the TDC1000-TDC7200EVM are mentioned in the userguide for the gas EVM here: http://www.ti.com/lit/ug/sniu026a/sniu026a.pdf

    What is the center frequency of the transducer you are using? You may also need to change the passives that determine the first order filter connected to the receive signal path to match your transducer. The TDC1000-TDC7200EVM has a bandpass filter centered around 1Mhz for reference.

    Regards,

  • 0 in reply to Scott Cummins
    Prodigy 40 points

    Thanks Scott,

    We are using the standard Steminc 1 MHz transducer that is packaged with TDC1000-7200EVM.

    I was also looking into the schematics of the TDC1000 reference design (TIDA-00322) that proposes a simple boost circuit.

    Regards,

    Oleg.