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8-57
RF2444
Rev A3 010717
8
Pin
Function
Description
Interface Schematic
13
NC
14
NC
15
LNA OUT
RF signal output for external 50
Ω filtering.The use of a filter here is
optional but does provide for lower noise floor and better out-of-band
rejection.
See pin 16.
16
VCC4
Supply voltage for the LNA. This pin should be bypassed with a 10 pF
capacitor to ground as close to the pin as possible. The shunt induc-
tance from this pin to ground via the supply decoupling must be tuned
to match the LNA output to 50
Ω at the desired operating frequency.
P2
LNA IN
BIAS
VCC4
P1
GAIN SEL
P15
LNA OUT
EXTERNAL
DECOUPLING
Microstrip
-16 dB