Overview

Description

The ISL5416 four-channel wideband programmable digital downconverter (WPDC) is designed for high dynamic range applications such as cellular basestations where the processing of multiple channels is required in a small physical space. The WPDC combines four channels in a single package, each including an NCO, a digital mixer, digital filters, an AGC, and a resampling filter. All channels are independently programmable and may be updated in real time. Each of the four channels can select any of the four digital input buses. Each of the tuners can process a W-CDMA channel. Channels may be cascaded or polyphased for increased bandwidth. Selectable outputs include I samples, Q samples and AGC gain. Outputs from the part are available over the parallel, serial or microprocessor interfaces.

Features

  • Up to 95MSPS input
  • Four parallel 16-bit fixed or 17-bit floating point inputs
  • Programmable RF attenuator/VGA control
  • 32-bit programmable carrier NCO with >110dB SFDR
  • 20-bit internal data path
  • Filter functions
  • Multi-stage cascaded-integrator-comb (CIC) filter
  • Two programmable FIR filters (first up to 32-taps, second up to 64-taps)
  • Half-band interpolation filter
  • Resampling FIR filter
  • Overall decimation from 1 to >4096
  • Digital AGC with up to 96dB of gain range
  • Up to four independent 16-bit parallel outputs
  • Serial output option
  • 16-bit parallel microprocessor interface
  • 1.8V core, 3.3V I/O operation
  • Evaluation board and configuration software available
  • Pb-free available

Comparison

Applications

Applications

  • Basestation receivers: GSM/EDGE, CDMA2000, UMTS

Documentation

Type Title Date
Datasheet PDF 3.24 MB
End Of Life Notice PDF 1.17 MB
Application Note PDF 493 KB
Application Note PDF 1.30 MB
Application Note PDF 2.07 MB
5 items

Design & Development

Software & Tools

Software Downloads

Type Title Date
Library ZIP 11.09 MB
1 item

Boards & Kits

Boards & Kits

Models