The HSP50216 Quad Programmable Digital Downconverter (QPDC) is designed for high dynamic range applications such as cellular basestations where multiple channel processing is required in a small physical space. The QPDC combines into a single package, a set of four channels which include: digital mixers, a quadrature carrier NCO, digital filters, a resampling filter, a Cartesian-to-polar coordinate converter and an AGC loop.

Features

• Up to 70MSPS Input

• Four Independently Programmable Downconverter Channels in a single package

• Four Parallel 16-Bit Inputs - Fixed or Floating Point Format

• 32-Bit Programmable Carrier NCO with >115dB SFDR

• 110dB FIR Out of Band Attenuation

• Decimation from 8 to >65536

• 24-bit Internal Data Path

• Digital AGC with up to 96dB of Gain Range

• Filter Functions

- 1 to 5 Stage CIC Filter

- Halfband Decimation and Interpolation FIR Filter

- Programmable FIR Filter

- Resampling FIR Filter

• Cascadable Filtering for Additional Bandwidth

• Four Independent Serial Outputs

• 3.3V Operation

• Pb-Free Available (RoHS Compliant)

Applications

• Narrow-Band TDMA through IS-95 CDMA Digital Software Radio and Basestation Receivers

• Wide-Band Applications: W-CDMA and UMTS Digital Software Radio and Basestation Receivers