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Product details

Parameters

Frequency (Min) (MHz) 300 Frequency (Max) (MHz) 4000 I/Q input common-mode voltage (Typ) 0.25 PLL/VCO No P1dB (Typ) (dBm) 13 Output IP3 (Typ) (dBm) 30 Noise floor (Typ) (dBm/Hz) -160 Unadjusted carrier suppression (Typ) (dBm) -45 Unadjusted sideband suppression (Typ) (dBc) -45 open-in-new Find other IQ modulators

Package | Pins | Size

VQFN (RGE) 24 16 mm² 4 x 4 open-in-new Find other IQ modulators

Features

  • High Linearity:
    • Output IP3: 30 dBm at 1850 MHz
  • Low Output Noise Floor: –160 dBm/Hz
  • 78-dBc Single-Carrier WCDMA ACPR
    at –10-dBm Channel Power
  • Unadjusted Carrier Suppression: –40 dBm
  • Unadjusted Sideband Suppression: –45 dBc
  • Single Supply: 3.3-V Operation
  • 1-bit Gain Step Control
  • Fast Power-Up/Power-Down
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Description

The TRF3705 is a low-noise direct quadrature modulator, capable of converting complex modulated signals from baseband or IF directly up to RF. The TRF3705 is a high-performance, superior-linearity device that is ideal to up-convert to RF frequencies of 300 MHz (Note: appropriate matching network is required for optimal performance at 300 MHz) through 4 GHz. The modulator is implemented as a double-balanced mixer.

The RF output block consists of a differential-to-single-ended converter that is capable of driving a single-ended 50-Ω load. The TRF3705 requires a 0.25-V common-mode voltage for optimum linearity performance. The TRF3705 also provides a fast power-down pin that can be used to reduce power dissipation in TDD applications.

The TRF3705 is available in an RGE-24 VQFN package.

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Technical documentation

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Type Title Date
* Data sheet TRF3705 300-MHz to 4-GHz Quadrature Modulator datasheet (Rev. B) Nov. 19, 2012
Technical article Can a clock generator act as a jitter cleaner? Mar. 23, 2017
Selection guide TI Components for Aerospace and Defense Guide (Rev. E) Mar. 22, 2017
Technical article Don’t let bad reference signals destroy the phase noise in your PLL/synthesizer Jan. 10, 2017
Technical article A survival guide to scaling your PLL loop filter design Nov. 22, 2016
Technical article What to do when your PLL does not lock Jul. 12, 2016
User guide TSW308x Evaluation Module (Rev. B) May 18, 2016
User guide TSW3XJ8XEVM User's Guide (Rev. B) Mar. 09, 2016
Design guide TSW308x Wideband Digital to RF Transmit Solution Design Guide Sep. 03, 2013
Design guide Analog Interfacing Networks for DAC348x and Modulators (TIDA-00077) (Rev. A) Aug. 14, 2013
Application note Baseband I/Q Trace Mismatch Degrades Sideband Suppression of RF I/Q Modulation Sep. 21, 2012
Application note TSW3725: Modifying to use the TRF3705 for Performance and BOM Improvements Aug. 24, 2012
Application note RF Matching Optimization Improves TRF3705 Performance Mar. 07, 2012
Application note LO Harmonic Effects on TRF3705 Sideband Suppression Mar. 05, 2012
User guide TSW3085EVM ACPR and EVM Measurements (TIDA-00076 Reference Guide) Dec. 29, 2011
User guide TRF3705EVM Evaluation Module Oct. 11, 2011

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
document-generic User guide
499
Description

The DAC3174EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments' dual-channel 14-bit 500 MSPS DAC3174 digital-to-analog converter (DAC). The EVM provides a flexible environment to test the DAC3174 under a variety of clock, and input conditions. For ease of (...)

Features
  • Comprehensive test capability for the DAC3174 for IF and RF outputs
  • Direct connection to TSW1400 signal generator
  • Includes CDCE62005 for clock generation or jitter cleaning
  • Includes TRF3705 for complete transmitter evaluation
  • Software support with a full featured GUI for easy testing
  • Direct HSMC (...)
EVALUATION BOARD Download
document-generic User guide
499
Description

The DAC34SH84EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments' four-channel, ultra-low power, 16-bit, 1.5 GSPS DAC34SH84 digital-to-analog converter (DAC) with 32-bit wide DDR LVDS data input, integrated 2x/4x/8x/16x interpolation filters, 32-bit NCO and (...)

Features
  • Comprehensive test capability for the DAC34SH84
  • Direct connection to TSW1400/TSW3100 signal generator
  • Includes CDCE62005 for clock generation or jitter cleaning
  • Software support with a full featured GUI for easy testing and prototyping
  • FMC-DAC-Adapter card compatible to connect with FMC interconnect (...)
  • EVALUATION BOARD Download
    document-generic User guide
    199
    Description
    The TRF3705EVM evaluation module is intended for the evaluation of the TRF3705 direct-launch quadrature modulator for applications in the transmit path of base stations and communication equipment.
    Features
  • The TRF3705EVM comes configured for differential I/Q input signals via four SMA connectors.
  • The RF output signal from the quadrature modulator can monitored via SMA connector
  • The LO signal is also provided through an SMA connector
  • EVALUATION BOARD Download
    document-generic User guide
    499
    Description

    The TSW3084EVM Evaluation Module is a circuit board that allows system designers to evaluate the combined performance of Texas Instruments' transmit signal chain with the LMK04806B low noise clock generator/jitter cleaner. For ease of use as a complete RF transmit solution the TSW3084EVM includes (...)

    Features
  • Includes LMK04806B for clock generation and jitter cleaning
  • Direct connection to TSW3100/TSW1400/TSW1406 signal generator
  • Comprehensive test capability for the transmitter (DAC3484 quad DAC and two TRF3705 IQ Modulators) at analog baseband, IF and RF outputs
  • Software support with a full featured GUI (...)
  • EVALUATION BOARD Download
    document-generic User guide
    399
    Description

    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 (...)

    Features
  • 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 (...)
  • EVALUATION BOARD Download
    document-generic User guide
    499
    Description

    The TSW30H84EVM Evaluation Module is a circuit board that allows system designers to evaluate the combined performance of Texas Instruments' transmit signal chain with the LMK04806B (Please see LMK04800) low noise clock generator/jitter cleaner. For ease of use as a complete RF transmit solution the (...)

    Features
  • Includes LMK04806B (Please see LMK04800) for clock generation and jitter cleaning
  • Direct connection to TSW1400/TSW1406/TSW3100 TSW1406 signal generator
  • Comprehensive test capability for the transmitter (DAC34H84 quad DAC and two TRF3705 IQ Modulators) at RF outputs
  • Software support with a full featured (...)
  • EVALUATION BOARD Download
    document-generic User guide
    499
    Description

    The TSW30SH84EVM Evaluation Module is a circuit board that allows system designers to evaluate the combined performance of Texas Instruments' transmit signal chain with the LMK04800 low noise clock generator/jitter cleaner. For ease of use as a complete RF transmit solution the TSW30SH84EVM includes (...)

    Features
  • Includes LMK04800 for clock generation and jitter cleaning
  • Direct connection to TSW1400/TSW1406/TSW3100 pattern generator
  • Comprehensive test capability for the transmitter; DAC34SH84 quad DAC and two TRF3705 IQ Modulators with RF outputs
  • Software support with a full featured GUI for easy testing and (...)
  • EVALUATION BOARD Download
    document-generic User guide
    699
    Description

    The TSW38J84EVM Evaluation Module is an evaluation board that allows system designers to evaluate the performance of Texas Instruments' dual transmit signal chain consisting of the DAC38J84, TRF3722, TRF3705, and the LMK04828. For ease of use as a complete dual RF transmit solution the TSW38J84EVM (...)

    Features
    • Complete bits-to-RF dual transmit signal chain solution utilizing the JESD204B interface
    • TRF3722 integrated modulator and RF synthesizer reduces solution size and simplifies layout
    • Enables evaluation of RF performance of both TRF3722 and TRF3705 modulators
    • Includes LMK04828 for onboard clock generation (...)

    Software development

    GUI FOR EVALUATION MODULE (EVM) Download
    SLAC507B.ZIP (123888 KB)
    GUI FOR EVALUATION MODULE (EVM) Download
    SLAC661.ZIP (182158 KB)

    Reference designs

    REFERENCE DESIGNS Download
    1-GHz Bandwidth Dual Channel Transmitter up to 4-GHz Reference Design
    TIDA-00409 The TSW38J84 EVM reference design provides a platform to demonstrate a wideband dual transmit solution that incorporates an integrated LO.  The reference design utilizes the 2.5 GSPS DAC38J84 device with the high performance modulators: TRF3722 (including integrated PLL/VCO) and TRF3705. The (...)
    document-generic Schematic
    REFERENCE DESIGNS Download
    Analog Interfacing Networks for DAC348x and Modulators
    TIDA-00077 The analog interface circuits in this reference design are often used between current-source based digital-to analog converters (DAC) and quadrature modulators. While the DAC348x is used as an example of a TI high-speed DAC, the circuits can be applied to other current-source based converters with (...)
    document-generic Schematic
    REFERENCE DESIGNS Download
    Adjacent Channel Power Ratio (ACPR) and Error Vector Magnitude (%EVM) Measurements
    TIDA-00076 This reference design discusses the use of the TSW3085EVM with the TSW3100 pattern generator to test adjacent channel power ratio (ACPR) and error vector magnitude (EVM) measurements of LTE baseband signals. By using the TSW3100 LTE GUI, patterns are loaded into the TSW3085EVM which is comprised of (...)
    document-generic Schematic document-generic User guide
    REFERENCE DESIGNS Download
    Wideband Digital to RF Transmit Solution
    TIDA-00072 The TSW308x is an example design of a wideband digital to RF transmit solution capable of generating 600 MHz of contiguous RF spectrum.  The system provides a reference on how to use the DAC34x8x, TRF3705 IQ modulator and LMK0480x to achieve this.  This reference EVM coupled with a pattern (...)
    document-generic Schematic

    CAD/CAE symbols

    Package Pins Download
    VQFN (RGE) 24 View options

    Ordering & quality

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    • REACH
    • Device marking
    • Lead finish/Ball material
    • MSL rating/Peak reflow
    • MTBF/FIT estimates
    • Material content
    • Qualification summary
    • Ongoing reliability monitoring

    Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

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