ADL5385

Rev. 0 | Page 19 of 24

EVALUATION BOARD

A populated, RoHS-compliant ADL5385 evaluation board is available. The ADL5385 has an exposed paddle underneath the package,

which is soldered to the board. The evaluation board is designed without any components on the underside so that heat can be applied to

the underside for easy removal and replacement of the ADL5385.

R22

10kΩ

VPOS

GND

VPOS

VPOS

SW21

R21

49.9Ω

OFF

ON

LO

VOUT

ENBL

RFPQ

0Ω

RFNQ

0Ω

CFPQ

OPEN

CFNQ

OPEN

QBBP

QBBN

24 VPS3

23 VPS3

22 LOIN

21 LOIP

20 COM3

19 COM3

VOUT 7

VPS1 8

VPS1 9

TEMP 10

VPS2 11

ENBL 12

ADL5385

4 × 4 LFCSP

EXPOSED PADDLE

TEMP

ENB

RTQ

OPEN

R11

0Ω

RFNI

0Ω

RFPI

0Ω

CFNI

OPEN

CFPI

OPEN

IBBN

IBBP

RTI

OPEN

CLOP

0.1µF

CLON

0.1µF

C11

OPEN

C12

0.1µF

R12

0Ω

RTEMP

200Ω

C14

0.1µF

C13

OPEN

C16

0.1µF

C15

OPEN

COUT

0.1µF

R13

0Ω

Figure 41. Evaluation Board Schematic

Table 8. Evaluation Board Configuration Options

Component

Function

Default Condition

VPOS, GND

Power Supply and Ground Clip Leads.

Not applicable

SW21, R21,

R22, ENB Test

Point, ENBL

SMA

Device Enable. Set SW21 to the OFF position to power down the device; set SW21 to the ON

position to enable the device. Part can be driven from an external enable control source via the

test point or the SMA connector. R21 provides a 50 Ω termination for any 50 Ω driving source.

R21 = 50 Ω, R22 =

10k Ω, SW21 = ON

RFNQ, CFNQ,

RTQ, CFPQ,

RFPQ, RFNI,

CFNI, RTI, CFPI,

RFPI

Baseband Input Filters. These components can be used to implement a low-pass filter for the

baseband signals.

RFNQ, RFPQ, RFNI

RFPI = 0 Ω (0402)

RTQ, RTI = open

(0402)

CFNQ, CFPQ, CFNI,

CFPI = open (0402)