NJM2278 데이터 시트보기 (PDF) - Japan Radio Corporation

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NJM2278

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Japan Radio Corporation  

NJM2278

! EVALUATION PC BOARD

The evaluation board is useful for your design and to have more understanding of the usage and performance of

this device. This evaluation board is designed to have the maximum value of PG at 400MHz,and its circuit is the

same as Test Circuit 4 (V+=2.7V).

Note that this board is not prepared to show the recommendation of pattern and parts layout.

# Circuit Diagram

RF IN

L1 C1

24n 1000p

RF IN

1

GND

2

C2

EMI

6.8p

3

IC1

NJM2278

Regulator

Bias

IREF C6

6 1000p

V+

5

RF OUT

4

C7

1000p

Rr e f

0 to 100

L2

C5

22n 1000p

C3

11p

C4

4.3p

V+

RF OUT

# List of Component

Items

IC

Designation

IC1

Inductor

L1

L2

Capacitor

C1

C2

C3

C4

C5

C6

C7

Potentiometer

Rref

GND

Value

NJM2278

24nH

22nH

1000pF

6.8pF

11pF

4.3pF

1000pF

1000pF

1000pF

100Ω

Supplier

New Japan Radio

Note

Murata

Murata

LQW18A series

LQW18A series

Taiyo Yuden

Taiyo Yuden

Taiyo Yuden

Taiyo Yuden

Taiyo Yuden

Taiyo Yuden

Taiyo Yuden

GRM21 series

UCN033 series

UCN033 series

UCN033 series

GRM21 series

GRM21 series

GRM21 series

Murata

PVG3A101C01

Ver.2008-08-22

-7-

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