TIDA-00335

High Bandwidth, High Frequency Transmitter Reference Design

TIDA-00335

Design files

Overview

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 bandwidth
  • Operation up to 6 GHz with good gain and linearity performance
  • Provides proper translation network to interface DAC to the modulator
  • Provides contingency for LPF between DAC and Modulator
  • Introduces modifications to ensure flat BB response for high bandwidth applications
  • TSW38J84 is an orderable reference design with GUI; modifications within this document can be made on that EVM.

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDU579.PDF (239 K)

Reference design overview and verified performance test data

TIDRC23.PDF (25 K)

Detailed schematic diagram for design layout and components

TIDRC24.PDF (53 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDC803.ZIP (855 K)

Design file that contains information on physical board layer of design PCB

Products

Includes TI products in the design and potential alternatives.

High-speed DACs (>10MSPS)

DAC37J82Dual-Channel, 16-Bit, 1.6-GSPS, 1x-16x Interpolating Digital-to-Analog Converter (DAC)

Data sheet document-pdfAcrobat PDF open-in-new HTML
High-speed DACs (>10MSPS)

DAC37J84Quad-Channel, 16-Bit, 1.6-GSPS, 1x-16x Interpolating Digital-to-Analog Converter (DAC)

Data sheet document-pdfAcrobat PDF
High-speed DACs (>10MSPS)

DAC38J82Dual-Channel, 16-Bit, 2.5-GSPS, 1x-16x Interpolating Digital-to-Analog Converter (DAC)

Data sheet document-pdfAcrobat PDF open-in-new HTML
High-speed DACs (>10MSPS)

DAC38J84Quad-Channel, 16-Bit, 2.5-GSPS, 1x-16x Interpolating Digital-to-Analog Converter (DAC)

Data sheet document-pdfAcrobat PDF
High-speed DACs (>10MSPS)

DAC39J82Dual-Channel, 16-Bit, 2.8-GSPS, 1x-16x Interpolating Digital-to-Analog Converter (DAC)

Data sheet document-pdfAcrobat PDF open-in-new HTML
High-speed DACs (>10MSPS)

DAC39J84Quad-Channel, 16-Bit, 2.8-GSPS, 1x-16x Interpolating Digital-to-Analog Converter (DAC)

Data sheet document-pdfAcrobat PDF open-in-new HTML
IQ modulators

TRF37041750MHz to 6.0 GHz Quadrature Modulator, 1.7V common-mode voltage

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
User guide TIDA-00335 MathCAD Design Calculations Dec. 10, 2014
Design guide High-Bandwidth High-Frequency Transmitter Solution Design Guide Oct. 08, 2014

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