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www.asb.co.kr

March 2009

Internally Matched LNA Module

1)

The tantal or MLC (Multi Layer Ceramic) 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. The ca-

the best electrical performance.

2)

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 in-

cluded inside the ALN 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. C3 shall be used for matching.

Application Circuit

Recommended Soldering Reflow Process

20~40 sec

260

°C

200

°C

150

°C

60~180 sec

Ramp-up

(3˚C/sec)

Ramp-down

(6

°C/sec)

IN

OUT

Vs

Size 25x25mm

(for ALN Series – 13x13mm)

Evaluation Board Layout

+

-

ALN

OUT

IN

C1

C2

Tantal or MLC (Multi Layer Ceramic)

Capacitor

(Mandatory)

C3 = 0.3pF