Data Sheet

Data Sheet
6141 Running Springs Rd
San Jose, CA 95135
www.ivativ.com
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Ph.: [phone]
Page 18 of 24
August 3, 2022
Figure 3: NFCT Antenna tuning
The required tuning capacitor value is given by the below equations:
C
int
is approximately 4pf. An antenna inductance of Lant = 2 μH will give tuning capacitors in the range of
130 pF on each pin. The total capacitance on NFC1 and NFC2 must be matched. Please check the APP
note ‘NFC antenna tuning’ by Nordic Semiconductor for more information on how to tune antenna.
6.6.1 Battery protection
If the antenna is exposed to a strong NFC field, current may flow in the opposite direction on the supply
due to parasitic diodes and ESD structures. If the battery used does not tolerate return current, a series
diode must be placed between the battery and the device in order to protect the battery.
6.7 Antenna Interface
RENO module comes with PCB antenna or MHF4 connector. Check with ‘NILE series Module Integration
Guide (MIG)’ for design guide lines to integrate these modules for high performance.