SBOU259 October 2021 PGA2505
The PGA2505EVMV2 supports connection of a phantom power source across the inputs of the preamplifier using terminal block J1. The voltage source is connected to the hot (+) and cold (−) sides of the preamplifier input through 6.81-kΩ resistors. Phantom power may be operated at voltages up to 50 VDC.
Phantom power is required for condenser microphones. When using a condenser microphone requiring a phantom power source, short pins 1 and 2 of jumper JMP1, and leave pins 3 and 4 open.
In addition, When using a dynamic microphone, short pins 3 and 4 of jumper J3, and leave pins 1 and 2 open.