700-2400 MHz 2W High Linearity 5V 2-Stage Power Amplifier

BMT332

4

Rev. E

BeRex

●website: www.berex.com

●email: sales@berex.com

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

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Application Circuit: 850 MHz

Schematic Diagram

BOM

Marks

C1

1206

10uF

Tantalum

C2

0603

N/A

C3

0603

68pF

C4

0603

1nF

C5

0603

N/A

C6

0603

3.3pF

C7

0603

100pF

C8

0603

5pF

C9

0603

N/A

C10

0603

10pF

High Q

C11

0603

100pF

C12

0603

1uF

C13

0603

100pF

C14

0603

1nF

C15

1206

10uF

Tantalum

L1

0603

5.6nH

L2

0603

22nH

L3

1008

22nH

Coil

R1

0603

100 Ω

±5%

R2

0603

270 Ω

±5%

PCB Diagram

Notice

Below information is subject to change

as conditions of the substrate.

1. Pin 16 & 20 is used for Vce of the inner bias

circuit. To eliminate bias line resonance you

need above 10mm transmission line and

adjust the position of C2, C3, C4 ,C5 and C6.

Also you can adjust spectrum regrowth about

bandwidth of signals which you want.

2. C10 : We recommend High-Q capacitor for

better output power performance. In this

document we used ‘10pF(251R14S100JV4,

EIA 0603) of Johanson Technology.

3. You could change C7 from 100 pF to 0 Ω or

a line if you have other DC block front of

BMT332.

Reference

Object

Distance

Input pin

L1

8.0mm

Input pin

C8

5.3mm

Output pin

C10

9.0mm

Pin 16

C3

7.2mm

Pin 16

C6

2.0mm

Pin 20

C4

5.0mm