TIDA-00335 Reference Design

Texas Instruments

High Bandwidth: High Frequency Transmitter Reference Design

Description

This design illustrates the circuit modifications required to support high bandwidth and  high frequency applications using current source DACs like the  DAC38J84 with the TRF3704 modulator.  The TRF3704 is a 6 GHz modulator capable of supporting wide BB bandwidths.  The DAC38J84 is a 2.5 GSPS converter capable of supporting 600 MHz of baseband bandwidth.  This combination facilitates operating at frequencies and bandwidths previously unattainable for high end communication systems.

Features
  • Supports 600 MHz of I/Q bandwidth corresponding to 1.2 GHz of RF bandwidthOperation up to 6 GHz with good gain and linearity performanceProvides proper translation network to interface DAC to the modulatorProvides contingency for LPF between DAC and ModulatorIntroduces modifications to ensure flat BB response for high bandwidth applicationsTSW38J84 is an orderable reference design with GUI; modifications within this document can be made on that EVM.
Applications
  • Repeater
  • Wireless communications test equipment
  • Small cell base station
  • Defense radio
  • Macro remote radio unit (RRU)
  • Electronic warfare
  • Non-military land mobile radio
  • Active antenna system mMIMO (AAS)
  • Generator: pulse
  • pattern and arbitrary waveform (AWG)
  • Vector signal transceiver (VST)/analyzer (VSA)/generator (VSG)
Product Categories
  • Data converters

Parts

Part Number Name Companion Part
DAC37J82 DAC37J82 Buy Datasheet
DAC37J84 DAC37J84 Buy Datasheet
DAC38J82 DAC38J82 Buy Datasheet
DAC38J84 DAC38J84 Buy Datasheet
TRF370417 TRF370417 Buy Datasheet

Bill Of Materials

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Schematic

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Design File

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Other Documents

Title Updated Type Size (KB)
TIDA-00335 Gerber 10 Dec 2014 ZIP 855
TIDA-00335 BOM 10 Dec 2014 PDF 53
TIDA-00335 Schematic 10 Dec 2014 PDF 25