ADRF6655

Rev. 0 | Page 38 of 44

EVALUATION BOARD LAYOUT AND THERMAL GROUNDING

An evaluation board is available for testing the ADRF6655. The standard evaluation is configured for downconversion applications. Table 5

provides the component values and suggestions for modifying component values for various modes of operation.

40

39

38

37

36

35

34

33

32

31

11

12

13

14

15

16

17

18

19

20

1

2

3

4

5

6

7

8

9

10

21

22

23

24

25

26

27

28

29

30

INP

GND

GND

VCCV2I

GND

GND

INN

VCCMIX

GND

IP3SET

VCC1

ADRF6655

VCC

3P3V_LDO

CP

LO

VCC

VTUNE

VCC

VCC

IP3SET

VCC_RF

C5

1nF

C6

1nF

RF

VCC_BB

IFP

C14

0.1µF

C9

0.1µF

C11

0.1µF

C7

0.1µF

C15

4.7µF

C13

47nF

R10

68

Ω

R9

270

Ω

VCC

IFN

VCC

OUT

VCC

VCC_LO

REFIN

REFOUT

2.5V

VCC2

R58

OPEN

R47

0

Ω

L1

OPEN

L2

OPEN

C36

OPEN

C35

OPEN

R44

OPEN

R43

0

Ω

R48

0

Ω

R25

0

Ω

R26

0

Ω

R24

0

Ω

R59

0

Ω

C29

0.1µF

0

Ω

T3, T6

T4, T5

R27

OPEN

R60

OPEN

T7, T8

C10

100pF

C12

100pF

L3

OPEN

C8

100pF

R37

0

Ω

R38

0

Ω

R65

0

Ω

R6

0

Ω

C40

OPEN

R12

OPEN

R5

OPEN

R2

OPEN

R63

0

Ω

R62

0

Ω

R1

0

Ω

R13

0

Ω

C1

100pF

C2

10µF

VCO_LDO

R72

0

Ω

C31

1nF

R16

0

Ω

R8

0

Ω

R7

0

Ω

C16

100pF

C17

0.1µF

C39

10µF

1

2

3

4

5

67

8

9

CLK

C32

330pF

C33

330pF

DATA

R52

1k

Ω

R50

1k

Ω

R51

1k

Ω

R35

100

Ω

R36

0

Ω

R3

10k

Ω

R17

0

Ω

R18

0

Ω

R30

100

Ω

C18

100pF

C34

330pF

R57

100

Ω

LE

VTUNE

VCC

C20

0.1µF

C23

0.1µF

C25

0.1µF

C27

0.1µF

C3

0.1µF

C21

100pF

C43

150pF

C42

150pF

R73, R74

C22

100pF

C24

100pF

C37

100pF

C38

100pF

VCC_RF

VCC_BB

VCC_LO

R32

0

Ω

R31

0

Ω

R29

0

Ω

C28

10µF

DECL1

CP

GND

RSET

REFIN

GND

MUXOUT

DECL2

VCC2

C19

0.1µF

R61

49.9

Ω

C41

10µF

Figure 82. Evaluation Board Schematic