2001 Nov 27

7

Philips Semiconductors

Product specification

UHF power LDMOS transistor

BLF647

List of components class-AB 600 MHz test circuit (see Figs 6 and 7)

Notes

1. American Technical Ceramics type 100A or capacitor of same quality.

2. American Technical Ceramics type 180R or capacitor of same quality.

3. The striplines are on a double copper-clad printed-circuit board: Rogers 5880 (

COMPONENT

DESCRIPTION

VALUE

DIMENSIONS

CATALOGUE

No.

C1, C2

multilayer ceramic chip capacitor; note 1

30 pF

C3

multilayer ceramic chip capacitor; note 1

8.2 pF

C5

multilayer ceramic chip capacitor; note 1

16 pF

C6

Tekelec trimmer

0.6 to 7.5 pF

C7, C8

multilayer ceramic chip capacitor; note 1

100 pF

C9

electrolytic capacitor

10

µF

C10

multilayer ceramic chip capacitor; note 2

2 pF

C11, C12

multilayer ceramic chip capacitor; note 2

10 pF

C13

multilayer ceramic chip capacitor; note 2

8.2 pF

C14

multilayer ceramic chip capacitor; note 2

1.5 pF

C15, C16, C17

multilayer ceramic chip capacitor; note 2

100 pF

C18

SMD capacitor

1

µF

2222 595 16754

C19

electrolytic capacitor

470

µF

C20

electrolytic capacitor

100

µF

L1, L2

semi rigid coax UT70-25

Z = 25

Ω±1.5 Ω 30.6 mm

L3, L4

stripline; note 3

15

× 10 mm

L5, L6

stripline; note 3

5.5

× 15 mm

L7, L8

stripline; note 3

10

× 10 mm

L9, L10

stripline; note 3

15

× 5mm

L11, L12

stripline; note 3

48.5

× 2.4 mm

L13

stripline; note 3

10

× 2.4 mm

L14

ferrite

L15, L16

Coilcraft SMD coil 1008CS-102XKBC

1

µH

B1

semi rigid coax (lambda/2)

Z = 50

Ω±1.5 Ω lambda/2

B2

semi rigid coax balun UT70-25

Z = 25

Ω±1.5 Ω 48.5 mm

R1

resistor

1 k

Ω

R2, R3

resistor

100

Ω

R4

resistor

3,3

Ω