ALN3501_13 Datasheet, PDF (4/4 Pages) Advanced Semiconductor Business Inc. – Internally Matched LNA Module

plerow^TM ALN3501
Internally Matched LNA Module
Application Circuit
V DC
C1
IN
External Component
for Input Matching
0_` .3pF
+-
Tantal
Capacitor
ALN
C2
OUT
1) The tantal capacitor is optional and for bypassing the AC noise introduced from the DC supply.
The capacitance value may be determined by customer’s DC supply status.
2) So-called DC blocking capacitors are always necessarily placed at the input and output port
for allowing only the RF signal to pass and blocking the DC component in the signal. The DC
blocking capacitors are included inside the LNA module. Therefore, C1 & C2 capacitors may
not be necessary, but can be added just in case that the customer wants. The value of C1 &
C2 is determined by considering the application frequency.
Recommended Soldering Reflow Process
260C
20~40 sec
Ramp-up
(3˚C/sec)
200C
Ramp-down
(6C/sec)
150C
60~180 sec
Evaluation Board Layout
+Vcc
IN
OUT
Size 25 x 25mm
(for ALN Series – 13x13mm)
4/4
www.asb.co.kr
February 2009