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AM26LV32E: AM26LV32E signal-ended signal amplitude

Sammi Shang
Expert 4450 points
Part Number: AM26LV32E

Dear team,

Would you kindly check if any thing wrong of the schematic? Now only Z channel could output single-end signal but with insufficient amplitude, A and B channel has no signal output.

Channel 1-differencial signal; channel 2- Z single end signal; channel 3- A signal end signal.

Thanks.

Best regards,

Sammi

  • 0
    TI__Guru 62920 points

    Hi Sammi,

    That is strange; the schematic looks OK to me.  Are you sure the part is soldered correctly (and with the right pin-1 orientation)?  Can you verify that the power supply is 3.3 V?  What is the impedance of the measurement probe - is it high (~1 MOhm) or low (~50 Ohms)?  (Lower impedance would present more of a load to this output and could reduce the voltage, so higher impedance is preferred.)  Is anything else connected to the single-ended outputs, like an MCU GPIO that is mistakenly configured as an output rather than an input?

    Regards,
    Max