EVAL-ADL8154

Product Details

The ADL8154-EVALZ is a 4-layer printed circuit board (PCB) fabricated from a 10 mil thick (0.25 mm) Rogers 4350B and Isola 370HR copper clad, forming a nominal thickness of 62 mils (1.57 mm). The RFIN and RFOUT ports on the ADL8154-EVALZ are populated with 2.92 mm, female coaxial connectors, and the corresponding RFIN and RFOUT traces have a 50 Ω characteristic impedance. The ADL8154-EVALZ is populated with components suitable for use over the entire −55°C to +125°C operating temperature range of the ADL8154.The ADL8154-EVALZ includes a calibration path (see Figure 6 and Table 3). THRUCAL (J1 and J2) must be populated with RF connectors to use the through calibration path. The calibration path includes two AC coupling capacitors (C11 and C12), which must be populated to mimic the AC coupling capacitors in the main signal path.

Incorporated on the ADL8154-EVALZ is the LT3045 ultralow noise, ultrahigh power supply rejection ratio (PSRR), linear regulator. This low noise regulator provides a clean power source to bias the ADL8154.

The RFIN and RFOUT traces on the ADL8154-EVALZ are 50 Ω, grounded, coplanar waveguide. The package ground leads and the exposed pad connect directly to the ground plane. Multiple vias connect the top and bottom ground planes with particular focus on the area directly beneath the ground pad to provide adequate electrical conduction and thermal conduction. The power supply decoupling capacitors on the ADL8154-EVALZ represent the configuration used to characterize and qualify the device.