ADL5605

Data Sheet

Rev. B | Page 14 of 18

ADL5605 MATCHING

The RF input of the ADL5605 can be easily matched to 50 Ω

with at most one external component and the microstrip line

used as an inductor. The RF output requires one series inductor,

one shunt capacitor, and the microstrip line used as an inductor.

Table 6 lists the required matching component values. Capac-

Inductor L2 is a Coilcraft® 0603CS series (0603 size).

spacing for the various frequency tuning bands. The component

spacing is referenced from the center of the component to the

edge of the package.

Figure 33 to Figure 35 show the matching networks.

Table 6. Recommended Components for Basic Connections

Frequency (MHz)

L2 (nH)

728 to 768

2.4

2.7

12.0

868 to 894

N/A

1.6

8.0

925 to 961

N/A

1.6

8.0

Table 7. Matching Component Spacing

Frequency (MHz)

λ1 (mils)

λ2 (mils)

λ3 (mils)

728 to 768

63

94.5

169

868 to 894

N/A

94.5

268

925 to 961

N/A

94.5

240

RFOUT

12

11

10

9

RFIN

16

1

2

13

14

15

NC

NC

NC

NC

RFIN

RFOUT

RFOUT

RFOUT

RFOUT

DISABLE

2.4pF

12pF

C2

100pF

L1

18nH

L2

2.7nH

C1

100pF

ADL5605

Figure 33. ADL5605 Match Parameters, 748 MHz Frequency Tuning Band

RFOUT

12

11

10

9

RFIN

16

1

2

13

14

15

NC

NC

NC

NC

RFIN

RFOUT

RFOUT

RFOUT

RFOUT

DISABLE

OPEN

8pF

C2

100pF

L1

18nH

L2

1.6nH

C1

100pF

ADL5605

Figure 34. ADL5605 Match Parameters, 881 MHz Frequency Tuning Band

RFOUT

12

11

10

9

RFIN

16

1

2

13

14

15

NC

NC

NC

NC

RFIN

RFOUT

RFOUT

RFOUT

RFOUT

DISABLE

OPEN

8pF

C2

100pF

L1

18nH

L2

1.6nH

C1

100pF

ADL5605

Figure 35. ADL5605 Match Parameters, 943 MHz Frequency Tuning Band