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DLP-7970ABP: Passively powering multiple TIDA-00217 using one DLP7970ABP

Part Number: DLP-7970ABP
Other Parts Discussed in Thread: TIDA-00217, RF430CL330H


I am trying to read the NDEF message from RF430CL330H based TIDA00217 tag. I am using MSP430G2 launchpad with DLP7970-ABP to read the NDEF message. I have implemented the anti-collision Firmware in the MSP430G2 Launch pad. My question is how many TIDA-00217 boards can the DLP7970ABP read? I see that the RF430CL330H takes 3.3V and 250ua for writing into NDEF Memory. Does the number relate to the power radited by the antenna in DLP7970ABP?

Thank you in advance.