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RF430CL331H: Would you please explain the definition of Power Supply specification?

Kuerbis
Expert 4145 points
Part Number: RF430CL331H
Other Parts Discussed in Thread: TRF7970A

Hi Team,

 

Would you please explain the definition for VLIM : Limiter clamping voltage and ILIM,MAX Maximum limiter current in the datasheet as below?

 

Thanks and Best regards,

Kuerbis.

  • 0
    TI__Mastermind 18265 points

    Hello Kuerbis,

    the RF frontend contains a limiter circuit which limit the antenna voltage to the limiter clamping voltage of 3V to 3.6V. The maximum current that the limiter can handle to clamp the voltage is 70mA. Under normal circumstances with i.e. a TRF7970A reader and a antenna size as used on the EVM board you will be far away from this current. This means the customer does not have to take care about the antenna voltage VANT because this is done by the limiter circuit.

    Because this answers your second question in the other thread I will close that.

    Best Regards,

    Helfried