The MAX2370 evaluation kit (EV kit) simplifies the testing and evaluation of the MAX2370 quadrature transmitter. The EV kit provides 50 SMA connectors for all RF inputs and outputs. A varactor-based tank circuit is provided for the on-chip IF voltage-controlled oscillator (VCO) and phase locked with an on-chip PLL. I/Q baseband inputs come with standard BNC connectors.