User's Manual

U
M10936
P
N7150 User Manual
UM
10936 All information provided in this document is subject to legal disclaimers.
U
ser manual
CO
MPANY PUBLIC
Rev. 2.0 — 6 November 2020
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77 of 127
T
he figure below compares the RF Discovery with the LPCD disabled to the RF Discovery
with the LPCD enabled and highlights the impact on the average current consumption (the
assumption being here that TOTAL_DURATION ~ 300ms):
RF Field
Poll A Poll B Poll A Poll B
~20 µA
~20ms ~300ms
Poll Phase Poll PhaseListen Phase
Listen
Phase
Listen
Phase
One complete RF Discovery Loop: Period = TOTAL_DURATION
Current
consumption
RF Field
~20 µA
~100µs
~300ms
Listen Phase Listen Phase
Listen
Phase
Current
consumption
One complete RF Discovery Loop: Period = TOTAL_DURATION
I
max
I
max
Poll Phase
Poll Phase
RF Discovery with LPCD disabled
, NFC-A & NFC-B only in Poll Mode
RF Discovery with LPCD enabled
Average Current Consumption
Average Current Consumption
t
t
t
t
Fig 39. Comparison of the RF Discovery with the LPCD disabled or enabled
A
specific application note explains how to properly configure and optimize this LPCD in a
given application. See [AN 11757].