NJG1512V

- 7 -

nAPPLICATION CIRCUIT: Single control signal operation by using C-MOS inverter

(frequency range: 0.1~2.0GHz)

nRECOMMENDED PCB DESIGN

C5

C2

C1

C3

C4

PRECAUTIONS

[1] The external capacitors should be connected to the input and output RF terminals

0.1uF capacitor at 100 to 500MHz, and 56pF at 500MHz to 2.0GHz.

[2] To avoid coupling between terminals, the capacitors have to be placed at the control

100MHz, 100pF at 100 to 500MHz, and 10pF at 500MHz to 2GHz are desired. In

general, the switching time is depend on the capacitor values, so please be careful

choosing capacitor values.

[3] For good isolation characteristics, the ground terminals (2, 3, 5, 6, 9~13 pin) should

be directly connected to the ground patterns and through-holes as close as possible

using relatively wide patterns.

Test circuit 1

0.5~2GHz

Test circuit 2

1~500MHz

C1~C3

56pF

0.1uF

C4, C5

10pF

1000pF

(TOP VIEW)

PCB SIZE=30.0x22.5mm

PCB: FR-4, t=0.5mm

STRIPLINE WIDTH =1mm

CAPACITOR: size 1005

11

13

14

4

2

1

P2

Zo=50

Ω

C1

C4

NJG1512V

8

7

C5

P1

Zo=50

Ω

C2

C3

Zo=50

Ω

10

6

12

3

5

9

PC