ADL5330ACPZ-R2 datasheet(20/24 Pages) AD

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ADL5330

Rev. A | Page 20 of 24

EVALUATION BOARD

Figure 49 shows the schematic of the ADL5330 evaluation

board. The silkscreen and layout of the component and circuit

sides are shown in Figure 50 through Figure 53. The board is

power supply is decoupled by 100 pF and 0.1 μF capacitors at

each power supply pin. Additional decoupling, in the form of a

series resistor or inductor at the supply pins, can also be added.

Table 5 details the various configuration options of the

evaluation board.

The output pins of the ADL5330 require supply biasing with

120 nH RF chokes. Both the input and output pins have 50 Ω

differential impedances and must be ac-coupled. These pins are

converted to single-ended with a pair of baluns (M/A-COM

part number ETC1-1-13).

Instead of using balun transformers, lumped-element baluns

comprising passive L and C components can be designed.

Alternate input and output RF paths with component pads are

available on the circuit side of the board. Components M1

through M9 are used for the input interface, and M10 through

M18 are used for the output interface. DC blocking capacitors

of 100 pF must be installed in C15 and C16 for the input and

C17 and C18 for the output. The C5, C6, C11, and C12

capacitors must be removed. An alternate set of SMA

connectors, INPUT2 and OUT2, are used for this

configuration.

The ADL5330 can be driven single-ended; use the RF input

path on the circuit side of the board. A set of 100 pF dc blocking

capacitors must be installed in C15 and C16. C5 and C6 must

be removed. Use the INPUT2 SMA to drive one of the

differential input pins. The unused pin should be terminated to

ground, as shown in Figure 34.

The ADL5330 is enabled by applying a logic high voltage to the

ENBL pin by placing a jumper across the SW1 header in the

O position. Remove the jumper for disable. This pulls the ENBL

pin to ground through the 10 kΩ resistor.

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