Product details

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
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
VQFN (RGE) 24 16 mm² 4 x 4
  • 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
  • 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

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.

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

Design & development

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

Evaluation board

DAC3174EVM — DAC3174 Evaluation Module

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 (...)

Evaluation board

DAC34SH84EVM — DAC34SH84 Quad-Channel, 16-Bit, 1.5-GSPS Digital-to-Analog Converter Evaluation Module

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 (...)

In stock
Limit: 1
Evaluation board

TRF3705EVM — TRF3705 Evaluation Module

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.
In stock
Limit: 3
Evaluation board

TSW3084EVM — Wideband Transmit Signal Chain Evaluation Board and Reference Design

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 (...)

In stock
Limit: 3
Evaluation board

TSW3085EVM — Wideband Transmit Signal Chain Evaluation Board and Reference Design

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 (...)

In stock
Limit: 3
Evaluation board

TSW30H84EVM — Wideband Transmit Signal Chain Evaluation Board and Reference Design

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 (...)

In stock
Limit: 3
Evaluation board

TSW30SH84EVM — Wideband Transmit Signal Chain Evaluation Board and Reference Design

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 (...)

In stock
Limit: 3
Evaluation board

TSW38J84EVM — TSW38J84 Evaluation Module

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 (...)

In stock
Limit: 3
GUI for evaluation module (EVM)

TSW308x EVM Software (Rev. B)

SLAC507B.ZIP (123888 KB)
GUI for evaluation module (EVM)

TSW3xJ8xEVM Software

SLAC661.ZIP (182158 KB)
Reference designs

TIDA-00409 — 1-GHz Bandwidth Dual Channel Transmitter up to 4-GHz Reference Design

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 (...)
Reference designs

TIDA-00077 — Analog Interfacing Networks for DAC348x and Modulators

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 (...)
Reference designs

TIDA-00076 — Adjacent Channel Power Ratio (ACPR) and Error Vector Magnitude (%EVM) Measurements

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 (...)
Reference designs

TIDA-00072 — Wideband Digital to RF Transmit Solution

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 (...)
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