EVAL-CN0285-EB1Z

The EVAL-CN0285-EB1Z circuit evaluation board is a complete implementation of the analog portion of a broadband direct conversion transmitter (analog baseband in, RF out). This circuit evaluation board uses ADF4351 fractional N PLL IC with Integrated VCO, ADL5375 wideband transmit modulator, ADP150 low noise 3.3V LDO and ADP3334 low noise adjustable LDO. RF frequencies from 500MHz to 4.4GHz are supported using a phase locked loop (PLL) with a broadband, integrated voltage controlled oscillator (VCO). Harmonic filtering of the local oscillator (LO) from the PLL ensures excellent quadrature accuracy, sideband suppression and low EVM. Low dropout regulators ensure that the power management scheme has no adverse impact on phase noise and EVM. This combination of components represents industry leading direct conversion transmitter performance over a frequency range of 500MHz to 4.4GHz. This circuit gives four different filter options to cover four different bands.