4

Application Circuit: 900 MHz

700-2700 MHz 1.5~2.0W Power Amplifier

BT331

Schematic Diagram

BOM

Tol-

eranc

C1

100pF

±5%

1680

C2

100pF

±5%

1608

C3

100pF

±5%

1608

C4

1nF

±5%

1608

C5

1uF

±5%

1608

C6

10uF

±20%

3216

C7

NC

C8

NC

C9

1pF

±5%

1608

C10

1608

3.3pF

±5%

C11

1608

10pF

±5%

C12

1608

8pF

±5%

L1

18nH

±5%

1608

L2

1608

8.2nH

±5%

R1

4.3KΩ

±5%

1608

R2

100Ω

±5%

1608

PCB Diagram

Notice

1. PCB: 31mil thick FR4

2. Distance between the cen-

ter of the shunt Inductor

(L2) and the input pin of

BT331 is 6.45 mm.

3. Distance between the cen-

ter of the shunt cap.(C11)

and the input pin of BT331

is 1.5 mm.

4. Distance between the cen-

ter of the shunt cap.(C12)

and the output pin of

BT331 is 8.25 mm.

8

7

6

3

4

5

2

1

C6

Vcc

RF_IN

RF_OUT

C3 C4 C5

C1

C2

C10

L2

L1

C12

C9

R2

R1

C11

C7

C8

BeRex

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● email: sales@berex.com

Specifications and information are subject to change and products may be discontinued without notice. BeRex is a trademark of BeRex.

All other trademarks are the property of their respective owners. © 2010 BeRex

Rev. A