Preliminary Technical Data

AD8376

Rev PrD | Page 9 of 12

EVALUATION BOARD

Figure 10 shows the schematic of the AD8376 evaluation board.

The silkscreen and layout of the component and circuit sides

are shown in Figure 11 through Figure 14. The board is

powered by a single-supply in the 4. 5 V to 5.5 V range. The

power supply is decoupled by 10 μF 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 2 details the various configuration options of the

evaluation board.

The output pins of the AD8376 require supply biasing with

1 μH RF chokes. Both the input and output pins must be ac-

coupled. These pins are converted to single-ended with a pair of

baluns (Mini-Circuits TC3-1T+ and M/A-COM ETC1-1-13).

The baluns at the input, T1 and T2, are used to transform 50 Ω

source impedances to the desired 150 Ω reference levels. The

output baluns, T3 and T4, and the matching components are

configured to provide a 150 Ω to 50 Ω impedance

transformations with insertion losses of about 10 dB.

Figure 16. AD8376 Evaluation Board Schematic