UM-B-074
DA1468x Range Extender Daughterboard
User Manual
Revision 1.1
17-Apr-2018
CFR0012
17 of 60
© 2018 Dialog Semiconductor
Mode
DA1468x GPIO
SKY66112-11
Comments
PA or LNA Bypass
P4_6
CPS
GPIO or DCF timer 30 (PORT3_DCF)
This signal can be fixed at logic 0 or 1 through
a pull-down or pull-up resistor.
ANT_SEL
P4_0
ANT_SEL
GPIO
This signal can be fixed at logic 0 through a
pull-down resistor.
7.1.3
Power Amplifier
The SKY66112-11 is a fully integrated RF Front End Module (FEM) designed for Smart Energy
applications. The device provides PA, LNA, an integrated inter-stage matching and harmonic filter,
and digital controls compatible with 1.6 V to 3.6 V CMOS levels.
The RF blocks operate over a wide supply voltage range from 1.2 V to 3.6 V that allows the
SKY66112-11 to be used in battery powered applications over a wide spectrum of the battery
discharge curve. The basic characteristics for the SKY66112-11 are:
●
Three voltage rails (VCC1, VCC2 and VDD)
●
TX power output tuning thru power rail voltage modification
○
TX P
OUT
= +21 dBm @ VCC2 = 3.0 V / 115 mA, Pin = -1 dBm
○
TX P
OUT
= +16 dBm @ VCC2 = 1.8 V / 60 mA, Pin = -3 dBm
○
TX P
OUT
= +13 dBm @ VCC2 = 1.2 V / 45 mA, Pin = -3 dBm
●
LNA with gain 11 dB
●
Receive Noise Figure = 2 dB
●
Bypass mode of operation (-2 dB)
●
Two Antennas Ports
An overview of the SKY66112-11 Front End Module is shown in
Figure 11
.
