ADL5350

Rev. 0 | Page 21 of 24

EVALUATION BOARD

An evaluation board is available for the ADL5350. The evaluation board has two halves: a low band board designated as Board A

and a high band board designated as Board B. The schematic for the evaluation board is shown in Figure 65.

RF/IF

GND2

LOIN

NC

RF/IF

NC

VPOS

L4-B

C2-B

L2-B

C6-B

C1-B

LO-B

C3-B

L3-B

L1-B

VPOS-B

IF-B

GND1

ADL5350

U1-B

12

3

4

87

6

5

C4-B

C5-B

RF-B

RF/IF

GND2

LOIN

NC

RF/IF

NC

VPOS

L4-A

C2-A

L2-A

C6-A

C1-A

LO-A

C3-A

L3-A

L1-A

VPOS-A

IF-A

GND1

ADL5350

U1-A

12

3

4

87

6

5

C4-A

C5-A

RF-A

Figure 65. Evaluation Board

Table 9. Evaluation Board Configuration Options

Component

Function

Default Conditions

C4-A, C4-B,

C5-A, C5-B

Supply Decoupling. C4-A and C4-B provide local bypassing of the supply.

C5-A and C5-B are used to filter the ripple of a noisy supply line. These are not

always necessary.

C4-A = C4-B = 100 pF,

C5-A = C5-B = 4.7 μF

L1-A, L1-B,

C1-A, C1-B

RF Input Network. Designed to provide series resonance at the intended

RF frequency.

L1-A = 6.8 nH (0603CS from Coilcraft),

L1-B = 1.7 nH (0302CS from Coilcraft),

C1-A = 4.7 pF, C1-B = 1.5 pF

L2-A, L2-B,

C2-A, C2-B,

C6-A, C6-B

IF Output Network. Designed to provide parallel resonance at the geometric mean

of the RF and LO frequencies.

L2-A = 4.7 nH (0603CS from Coilcraft),

L2-B = 1.7 nH (0302CS from Coilcraft),

C2-A = 5.6 pF, C2-B = 1.2 pF,

C6-A = C6-B = 1 nF

L3-A, L3-B,

C3-A, C3-B

LO Input Network. Designed to block dc and optimize LO voltage swing at LOIN.

L3-A = 8.2 nH (0603CS from Coilcraft),

L3-B = 3.5 nH (0302CS from Coilcraft),

C3-A = C3-B = 100 pF

L4-A, L4-B

LO Buffer Amplifier Choke. Provides bias and ac loading impedance to LO buffer

amplifier.

L4-A = 24 nH (0603CS from Coilcraft),

L4-B = 3.8 nH (0302CS from Coilcraft)