NJG1507R 데이터 시트보기 (PDF) - Japan Radio Corporation

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NJG1507R

SPDT SWITCH GaAs MMIC

Japan Radio Corporation  

NJG1507R

nTEST CIRCUIT

nRECOMMENDED PCB DESIGN

(TOP VIEW)

PCB SIZE=19.5x14.0mm

PC

PCB: FR-4, t=0.2mm

CAPACITOR: size 1005

C1

STRIPLINE WIDTH=0.5mm

u

R1

C1~C3: 56pF

P1

C2

NJG1507R

1

C3

P2

C4, C5: 10pF

R1: 510KΩ

u: Please short between Pin4

C4

C5

and ground plane directly as

VCTR1

VCTR2

close as possible.

Precautions

[1]External capacitors should be connected to the input and output RF terminals (P1, P2,

PC) to block the DC current. The above example is a circuit at 1.9GHz. Please select the

capacitor value suitable for actual frequency from 10pF to 1000pF.

[2]Decoupling capacitors should be connected to the control terminals (VCTR1, VCTR2) as

close as possible. The values of these capacitors should be selected from 5pF to

100pF range. Please consider that these values are very effective to switching time

(Larger capacitor gives longer switching time).

[3]In order to keep good isolation characteristics, the ground terminals (3, 4, 6pin)

should be connected to the ground pattern with wider width as close as possible, and

through-hole in the ground plane should also be placed as close as possible.

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