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www.asb.co.kr

November 2008

Internally Matched LNA Module

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.

ㅛ

Application Circuit

Recommended Soldering Reflow Process

Evaluation Board Layout

+

-

ALN

OUT

IN

C1

C2

Tantal

Capacitor

20~40 sec

260

°C

200

°C

150

°C

60~180 sec

Ramp-up

(3˚C/sec)

Ramp-down

(6

°C/sec)

Size 25 x 25mm

IN

OUT

+Vcc

(for ALN-AT, BT, T Series – 10x10mm)