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IDTF1358NBGI - DPD Demodulator

Description

This document describes the specification for the IDTF1358 Digital Pre-Distortion Demodulator for PA linearization.

This series of devices is offered in 3 variants to cover common UTRA bands.

Features

  • Wide flat performance IF BW.
  • Wide RF and LO BWs (~ 800 MHz).
  • LO can be High or Low Side.
  • Ideal for Multi-Carrier Systems.
  • Drives ADC directly.
  • Ultra linear +41 dBm OIP3.
  • Excellent ACLR performance.
  • 200 Ω output impedance.
  • Fully integrated DPD demodulator.
  • Standby Mode w/Fast Recovery.
  • Current draw is 216 mA.
  • 6 x 6 mm 36 pin package.

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Datasheet Details

Part number IDTF1358NBGI
Manufacturer IDT
File Size 1.78 MB
Description DPD Demodulator
Datasheet download datasheet IDTF1358NBGI Datasheet

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Full PDF Text Transcription

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DPD Demodulator for PA Linearization GENERAL DESCRIPTION This document describes the specification for the IDTF1358 Digital Pre-Distortion Demodulator for PA linearization. This series of devices is offered in 3 variants to cover common UTRA bands. COMPETITIVE ADVANTAGE In typical basestation transmitters, digital pre-distortion is employed to improve the Transmitter performance. The signal coming out of the PA is sampled and the incoming Tx chain I&Q data is pre-distorted to counteract the distortion inherent in the PA. The PA signal is adjusted via a digital step attenuator to a lower level and then sub-sampled at an IF frequency of ~200 MHz which necessitates the need for a highly linear demodulator to downmix to quadrature IF from the Transmit frequency.
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