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ADF chips: maintaining lock after the power supply is disconnected

Question asked by rjenkins on Feb 29, 2012
Latest reply on Mar 15, 2012 by rbrennan

How do you retain the information programmed in the ADF chips (PLL/synthesiser) after the power supply is disconnected. Whenever the ADf 4108 is unplugged from the power supply the chip loses lock and has to be reprogrammed via the computer. For mobile applications (which it states the chip are used for), they need to be non-volatile.  Could someone please provide a solution to this problem?