ADL5385ACPZ-R7 datasheet(21/24 Pages) AD

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Data Sheet

ADL5385

Rev. D | Page 21 of 24

EVALUATION BOARD

One populated, RoHS-compliant ADL5385 evaluation board is

available, the ADL5385-DIFFLO-EBZ. The ADL5385-DIFFLO-

EBZ can be configured to allow a differential LO drive through a

balun or direct interfacing to a PLL evaluation board. It also

includes component pads in its LO path to accommodate a

harmonic filter. The four baseband inputs are located on one

edge of the board to allow direct connection to a high speed

DAC evaluation board. The ADL5385-DIFFLO-EBZ also

includes an RF/IF amplifier.

The modulator output can be measured directly at the RF_OUT

SMA connector. Alternatively, by removing R40, and installing a

0 Ω resistor in the R25 pad, the modulator output can be fed to

the RF amplifier.

The ADL5385-DIFFLO-EBZ ships installed with an ADL5601

amplifier (50 MHz to 4000 MHz RF/IF amplifier). The ADL5602

can be used if more gain is needed. Figure 43, Table 8, Figure 44,

and Figure 45 show the schematic, configuration options, and

layouts for the ADL5385-DIFFLO-EBZ, respectively.

1SINGLE-ENDED LO DRIVINGAT LOIP.

2DIFFERENTIAL LO DRIVINGAT LOIP WITH T1 OR T2.

ADL5385

EXPOSED PADDLE

VPS2

100pF

0.1µF

GND

R62

49.9Ω

GND

LO_IP

C15

R15

D.N.I

LO_IN

C40

0Ω

R32

R34

0Ω

C17

D.N.I

C14

T1 OR T22

C16

D.N.I

R431

R111

R13

C18

D.N.I

GND

D.N.I

0.1µF

R10

0Ω

GND

D.N.I

0Ω

GND

TEMP

YEL

RTEMP

200Ω

100pF

0.1µF

GND

C31

R40

0.1µF

D.N.I

RF_OUT

(2)

68pF

470nH

VPOS_AMP

RED

C47

AMP_OUT

GND

0Ω

D.N.I

0.1µF

C45

C44

C43

1µF

1.2nF

QNBB

QPBB

0Ω

R17

C81

D.N.I

C87

D.N.I

C75

D.N.I

0Ω

C76

D.N.I

C41

D.N.I

C80

D.N.I

C86

D.N.I

C82

D.N.I

C88

D.N.I

INBB

R33

IPBB

0Ω

R36

C78

D.N.I

C84

D.N.I

C90

D.N.I

0Ω

C91

D.N.I

C89

D.N.I

C83

D.N.I

C77

D.N.I

C85

D.N.I

C79

D.N.I

0Ω

GND

0.1µF

GND

C11

100pF

GND

10µF

RED

VP1

R61

10kΩ

OFF

SEC

PRI

R25

0Ω

GND

COM3

LOIP

LOIN

VPS3

ENBL

TEMP

VPS1

VOUT

GND

T1 TC1-1-43A+

T2 TC1-1-13M+

ADL5601

GND

GND1

BLACK

GND

GND2

BLACK

Figure 43. ADL5385-DIFFLO-EBZ Schematic

Table 8. ADL5385-DIFFLO-EBZ Configuration Options

Component

Description

Default Value

VP1, VPOS_AMP, GND1, GND2

Power supply clip leads, and ground clip leads.

Red (VP1) = 5 V, red (VPOS_AMP) = GND, GND1

and GND2 = black

GND

Not applicable

S1, R61, R62

Device enable select. Set S1 to VP to enable the device. Set S1

to GND to power down the device.

S1 = on, R61 = 10 kΩ, R62 = 49.9 Ω

R1, R2, R3, R4, R6, R17,

R33, R36, C41, C75 to C91

Baseband input filters. These components can be used to

implement a low-pass filter for the baseband signals.

R1, R2, R3, R4, R6, R17, R33, R36 = 0 Ω,

C41, C75 to C91 = open

C14, C15

LO driving capacitor.

C14, C15 = 0.1 μF

R15, R32, R34, C16 to C18, C40

LO input filters. These components can be used to

implement a filter for the LO input signals.

R15, R32 = open, R34, C40 = 0 Ω,

C16 to C18 = open

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