The VCA2613 is a dual, variable gain amplifier including a low-noise preamp (LNP). The VCA2613EVM evaluation module is designed to provide a complete environment when evaluating the VCA2613. The user can apply the input signal either to the LNP, or directly to the VCA section. The differential outputs of the VCA2613 are buffered using an op amp in a difference amplifier configuration. This amplifier is also capable of driving a terminated 50ohm load, suitable for lab test equipment. Switches allow the user to operate the VCA2613 in all possible configurations.
The VCA2613EVM requires a +5V supply for the VCA2613 itself, and an additional +/-5V for the output buffer opamps. All signal inputs and outputs use SMA connectors.