Wideband Transmit Signal Chain Evaluation Board and Reference Design


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The TSW3085 Evalutaion Module is a circuit board that allows system designers to evaluate the combined performance of Texas Instruments' transmit signal chain with the LMK04806B (formally National Semiconductor) low noise clock generator/jitter cleaner. For ease of use as a complete RF transmit solution the TSW3085EVM includes the LMK04806B for clocking the DAC3482 digital-to-analog converter (DAC), as well as a TRF3705 for up-converting the I/Q output from the DACs to an RF carrier.

The DAC3482 is a dual-channel, ultra-low power 16-bit 1.25 GSPS DAC.

The TRF3705 is a high performance complex RF modulator with a 300 MHz to 4 GHz output range.

The LMK04806B is a low noise clock generator and jitter cleaner capable of jitter below 100fs rms and output frequencies up to 1300MHz.

The EVM can be used along with the TSW3100 pattern generator to perform a wide range of test procedures. The TSW3100 generates the test patterns which are fed to the DAC3482 through a 1.25 GSPS LVDS port. The LMK04806B is used to synchronize the TSW3100 board to the TSW3085EVM. The transmit RF signal path also includes an amplifier and programmable attenuator.

  • Includes LMK04806B for clock generation and jitter cleaning
  • Direct connection to TSW3100 signal generator
  • Comprehensive test capability for the transmitter (DAC3482 dual DAC and TRF3705 IQ Modulator) at analog baseband, IF and RF outputs
  • Software support with a full featured GUI for easy testing and prototyping
  • High-speed ADCs (≥10 MSPS)
    ADS41B25 12-Bit, 125-MSPS Analog-to-Digital Converter (ADC) ADS41B29 12-Bit, 250-MSPS Analog-to-Digital Converter (ADC) ADS41B49 14-Bit, 250-MSPS Analog-to-Digital Converter (ADC) ADS4245 Dual-Channel, 14-Bit, 125-MSPS Analog-to-Digital Converter (ADC) ADS4246 Dual-Channel, 14-Bit, 160-MSPS Analog-to-Digital Converter (ADC) ADS58B19 9-Bit, 250-MSPS Analog-to-Digital Converter (ADC)


    Clock generators
    CDCE72010 10 outputs low jitter clock synchronizer and jitter cleaner


    High-speed DACs (>10 MSPS)
    DAC3482 Dual-Channel, 16-Bit, 1.25-GSPS, 1x-16x Interpolating Digital-to-Analog Converter (DAC) DAC3484 Quad-Channel, 16-Bit, 1.25-GSPS, 1x-16x Interpolating Digital-to-Analog Converter (DAC)


    IQ modulators
    TRF3705 300MHz to 4GHz Quadrature Modulator


    Programmable & variable gain amplifiers (PGAs & VGAs)
    PGA870 High-Speed Fully Differential Programmable Gain Amplifier
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    Evaluation board

    TSW3085EVM — TSW3085EVM

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    GUI for evaluation module (EVM)

    TSW308x EVM Software (Rev. B) — SLAC507B.ZIP (123888KB)

    TI's Standard Terms and Conditions for Evaluation Items apply.

    Design files

    Technical documentation

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    Type Title Date
    Certificate TSW3085EVM EU Declaration of Conformity (DoC) 02 Jan 2019
    User guide TSW308x Evaluation Module (Rev. B) 18 May 2016
    Design guide Analog Interfacing Networks for DAC348x and Modulators (TIDA-00077) (Rev. A) 14 Aug 2013
    User guide TSW3085EVM ACPR and EVM Measurements (TIDA-00076 Reference Guide) 29 Dec 2011

    Related design resources

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    TSW1400EVM Data Capture/Pattern Generator: Data Converter Evaluation Module With 8 LVDS Lanes up to 1.5Gbps

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