BGA3012 - 5 MHz to 300 MHz 12 dB reverse amplifier application
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2013. All rights reserved.
Rev. 1 — 14 February 2013
4. Application Information
For evaluation purposes an evaluation board is available. The evaluation circuit can be
seen in figure 1 and the corresponding PCB is shown in figure 2. Table 1 shows the bill
of materials.
4.1 Evaluation board circuit
Fig 1. BGA3012 evaluation circuit
The power supply is applied on the center pin of connector J3 and is applied to the MMIC
via choke L2 which provides RF blocking to the supply line. Capacitors C4 and C5 are
supply decoupling capacitors.
At the F-connector J1 the RF input signal is applied where capacitor C1 provides DC-
blocking. Resistors R1 and R2 are used as feedback resistors to set the gain and slope.
Two resistors are used to lower the influence of the parasitic capacitance from the circuit
board. Capacitor C2 provides DC-blocking between the input and output of the MMIC.
Capacitor C3 provides DC-blocking before the RF signal is available at F-connector J2.
