ADL5320

Rev. 0 | Page 14 of 16

EVALUATION BOARD

The schematic of the ADL5320 evaluation board is shown in

Figure 32. This evaluation board uses 25 mil wide traces and is

made from FR4 material. The evaluation board comes tuned for

operation in the 1805 MHz to 2140 MHz tuning band. Tuning

options for other frequency bands are also provided in Table 9.

The recommended placement for these components is provided

in Table 10. The inputs and outputs should be ac-coupled with

appropriately sized capacitors. DC bias is provided to the

voltage of 5 V is recommended.

1

2

(2)

3

ADL5320

C6 10µF

C5 10nF

C4 22pF

L1

15nH

VSUP

GND

C2

22pF

C7

1.5pF

C1

22pF

C3

0.5pF

λ1

λ3

λ4

λ2

Figure 32. Evaluation Board, 1805 MHz to 2170 MHz

10uF

C3

0.5pF

C7

1.5pF

C1

22pF

C2

22pF

10nF

22pF

15nH

Figure 33. Evaluation Board Layout and Default Component Placement for

Operation from 1805 MHz to 2170 MHz

Table 9. Evaluation Board Configuration Options

Component

Function

450 MHz to 500 MHz

800 MHz to 960 MHz

1805 MHz to

2170 MHz

(Default

Configuration)

2300 MHz to

2400 MHz

2500 MHz to

2700 MHz

C1, C2

AC coupling

capacitors

0402, 100 pF

0402, 47 pF

0402, 22pF

C1= 0402 12 pF

C2 = 0402 2.2 pF

C1 = 0402 12 pF

C2 = 0402 1.0 pF

C4, C5, C6

Power supply

bypassing

capacitors

C4 = 0603 100 pF

C5 = 0603 10 nF

C6 = 1206 10 μF

C4 = 0603 100 pF

C5 = 0603 10 nF

C6 = 1206 10 μF

C4 = 0402 22pF

C5 = 0603 10 nF

C6 = 1206 10 μF

C4 = 0603 12 pF

C5 = 0603 10 nF

C6 = 1206 10 μF

C4 = 0603 12 pF

C5 = 0603 10 nF

C6 = 1206 10 μF

L1

DC bias

inductor

0603, 47 nH

0603, 47 nH

0603, 15 nH

0603, 15 nH

0603, 15 nH

C3, C7

Tuning

capacitors

C3 = 0402 18 pF

C7 = 0402 6.8 pF

C3 = 0402 6.8 pF

C7 = 0402 2.2 pF

C3 = 0402 0.5 pF

C7 = 0402 1.5 pF

C3 = 0402 1.2 pF

C7 = 0402 1.0 pF

C3 = 0402 1.8 pF

C7 = 0402 0.5 pF

R1

R1 = 0402 0 Ω

R1 = 0402 0 Ω

VSUP, GND

Power supply

connections

VSUP red test

loop, GND black test

loop

VSUP red test

loop, GND black test

loop

VSUP red test

loop, GND black

test loop

VSUP red test

loop, GND black

test loop

VSUP red test

loop, GND black

test loop

Table 10. Recommended Component Spacing on Evaluation Board

Frequency (MHz)

λ1 (mils)

λ2 (mils)

λ3 (mils)

λ4 (mils)

450 to 500

391

75

364

50

800 to 960

200

75

100

350

1805 to 2170

300

75

175

275

2300 to 2400

225

75

125

125

2500 to 2700

142

75

89

75