The Digital Down Converter (DDC) is a single chip synthesizer, quadrature mixer and lowpass filter. Its input data is a sampled data stream of up to 16 bits in width and up to a 75 MSPS data rate. The DDC performs down conversion, narrowband low pass filtering and decimation to produce a baseband signal.

Features
• 75 MSPS Input Data Rate
• 16-Bit Data Input; Offset Binary or 2’s Complement Format
• Spurious Free Dynamic Range Through Modulator >102dB
• Frequency Selectivity: <0.006Hz
• Identical Lowpass Filters for I and Q
• Passband Ripple: <0.04dB
• Stopband Attenuation: >104dB
• Filter -3dB to -102dB Shape Factor: <1.5
• Decimation Factors from 32 to 131,072
• IEEE 1149.1 Test Access Port
• HSP50016-EV Evaluation Board Available

Applications
• Cellular Base Stations
• Smart Antennas
• Channelized Receivers
• Spectrum Analysis
• Related Products: HI5703, HI5746, HI5766 A/Ds