Update: 29 September, 2023
This document describes the features and characteristics of Analog Devices' Multichannel Digital Upconverter with VersaCREST™ Crest Reduction Engine AD6633 Rev. Sp0. The product features 4 or 6 wideband digital upconverter channels, and the VersaCREST crest reduction engine reduces demands on external power amplifiers. It also has a 20-bit complex input port (I, Q interleaved), shared among 4 or 6 processing channels. There are two 18-bit output ports for parallel I and Q or a single 18-bit output port for interleaved I and Q. It meets IS-95 requirements with all-pass phase equalizer filters. The product includes programmable RAM coefficient FIR filters (RCF) with resampling FIR interpolating filters, 2 per channel. It also has a fifth-order interpolating CIC filter, 1 per channel. The full complex NCO has 32-bit tuning resolution (fine) with a worst spur better than -105 dBc, 1 per channel. It includes a complex FIR filter for frequency equalization or additional filtering, output automatic gain control, and full complex composite N.
File format: PDF
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MD5 Checksum: 134600CF1204B4B2ACC5B39186ED8278
Publication date: 27 March, 2012
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PDF Link: ANALOG DEVICES AD6633 handbook PDF