ADL5904 max current pin10, Vrms?

The data sheet page 8, Table 2. has no value for max current from VRMS pin.

The suggested application has a capacitor directly on this pin, so some source impedance should be there, I would think.

I think I damaged the output by shorting it to ground. I could add a resistor in series with the output, and possibly add the capacitor after it.

Knowing the max current the pin can tolerate would be helpful to know. Including this in the filter is not necessary, but may help.

I'm using the part to measure mostly LTE signals.

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  • +1
    •  Analog Employees 
    on Aug 16, 2019 10:19 PM

    Hello CSV,

    The VRMS pin has an internal series resistor of about 92 Ω.  With that series resistant, you might not be damaging the part by accidentally shorted the VRMS pin to ground.  For Input RF power at 0dBm to the RFIN, the current at the VRMS pin would be about 13.7mA.

    Hope this can help.

    JohnC

Reply
  • +1
    •  Analog Employees 
    on Aug 16, 2019 10:19 PM

    Hello CSV,

    The VRMS pin has an internal series resistor of about 92 Ω.  With that series resistant, you might not be damaging the part by accidentally shorted the VRMS pin to ground.  For Input RF power at 0dBm to the RFIN, the current at the VRMS pin would be about 13.7mA.

    Hope this can help.

    JohnC

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