LTC5594Recommended for New Designs
The LTC5594 is a direct conversion quadrature demodulator optimized for high linearity zero-IF and low-IF receiver applications in the 300MHz to 9GHz frequency...
Datasheet LTC5594 on Analog.com
The eeprom on the DC2465A board is a MICROCHIP, 24LC025-I/ST. You can contact Microchip for help in programming. Note that the eeprom is only needed for QuikEval and not needed for normal operation of LTC5594.