I am attempting to power a LM35 temperature sensor from the RF430FRL152H VDD2X pin. The LM35 is powered from an external voltage doubler connected to VDD2X which should give give VDDSW x 4 or 1.4 Votls x 4 = 5.6 Volts.
The external voltage doubler and Lm35 draw 125 microamps. (This current was measured using an external power source.) When the external doubler and the Lm35 are connected to VDD2X, the connectivity between the TRF7970A Evaluation Module and the RF430FRL152H EVM board is lost.
Any suggestions to correct this issue?
Thanks,
Bernard Drew