ADL5507ACBZ-R7 datasheet(32/34 Pages) AD

32 / 34 page

Data Sheet

ADL5507

EVALUATION BOARD

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Rev. 0 | 32 of 34

Figure 87 shows the schematic of the ADL5507 evaluation board.

The board is powered by a single supply in the 2.7 V to 3.45

V range. The power supply is decoupled by 100 pF and 0.1 µF

capacitors. Enable the device in positive slope mode by placing

a jumper at EN location of jumper block P1. Remove the jumper

completely to enable the device in negative slope mode.

The RF input has a broadband match of 50 Ω using a single

51 Ω resistor at R1A. More precise matching at spot frequencies is

possible (see the Input Coupling Options section).

Figure 88 and Figure 89 shows the layout of the evaluation board.

LAND PATTERN AND SOLDERING

INFORMATION

Pad diameters of 8 mils are recommended with a solder mask

opening of 12 mils. The RF input trace is a grounded coplanar

waveguide (GCPW) with a trace width of 28.5 mils and a gap width

of 10 mils, which corresponds to a 50 Ω characteristic impedance

for the dielectric material being used (RO4003C). All traces going to

the pads are tapered down to 5 mils. For the RFIN line, the length

of the tapered section is 25 mils.

Figure 87. Evaluation Board Schematic

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