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www.asb.co.kr

January 2010

Internally Matched Balanced LNA Module

Including Coupler

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 includ-

ed inside the ALUC 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 fre-

quency.

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 40x40 mm

(for ALUC Series – 22x12 mm)

Evaluation Board Layout

Tantal or MLC (Multi Layer Ceramic)

Capacitor

ALUC

OUT

IN

C1

C2

+

-

+

-

Tantal or MLC (Multi Layer Ceramic)

Capacitor

Vs