0.4 GHz to 4.0 GHz Quadrature Modulator, 1.7V common-mode voltage


Product details


Frequency (Min) (MHz) 400 Frequency (Max) (MHz) 4000 I/Q input common-mode voltage (Typ) 1.7 PLL/VCO No P1dB (Typ) (dBm) 12 Output IP3 (Typ) (dBm) 26.5 Noise floor (Typ) (dBm/Hz) -163 Unadjusted carrier suppression (Typ) (dBm) -40 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


  • 76-dBc Single-Carrier WCDMA ACPR at –8 dBm Channel Power
  • Low Noise Floor: –163 dBm/Hz
  • OIP3 of 26.5 dBm
  • P1dB of 12 dBm
  • Unadjusted Carrier Feedthrough of –40 dBm
  • Unadjusted Side-Band Suppression of –45 dBc
  • Single Supply: 4.5-V–5.5-V Operation
  • Silicon Germanium Technology
  • 1.7-V CM at I, Q Baseband Inputs
    • Cellular Base Station Transceiver
    • CDMA: IS95, UMTS, CDMA2000, TD-SCDMA
    • TDMA: GSM, IS-136, EDGE/UWC-136
    • Multicarrier GSM
    • WiMAX: 802.16d/e
    • 3GPP: LTE
    • Wireless MAN Wideband Transceivers
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The TRF370317 is a low-noise direct quadrature modulator, capable of converting complex modulated signals from baseband or IF directly up to RF. The TRF370317 is a high-performance, superior-linearity device that is ideal to RF frequencies of 400 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 and an RF amplifier capable of driving a single-ended 50- load without any need of external components. The TRF370317 requires a 1.7-V common-mode voltage for optimum linearity performance.

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Technical documentation

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Type Title Date
* Data sheet 0.4 GHz to 4-GHz Quadrature Modulator datasheet (Rev. B) Jan. 21, 2010
Technical article Can a clock generator act as a jitter cleaner? Mar. 23, 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 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
User guide TSW3725 Evaluation Module Oct. 25, 2011
Application note TRF372017 Noise Analysis (Rev. A) Oct. 07, 2011
Application note LO Harmonic Effect of I/Q Modulator Sideband Suppression May 10, 2010
Application note Passive Terminations for Current Output DACs Nov. 10, 2008
Application note Gain Optimization Oct. 16, 2008
User guide TRF370x EVM User's Guide Oct. 16, 2008
Application note Superior ACPR Performance of TI’s TRF3703xx Family Oct. 07, 2008
Application note TRF3703xx Quadrature Modulators Improve Spurious Emission and Save Power in TDD Oct. 07, 2008
More literature TRF3703: High-performance, low-noise quadrature modulator (Rev. C) Sep. 03, 2008
User guide TRF3703-17 Quadrature Modulator Evaluation Module (Rev. A) May 02, 2008
Application note Optimizing Carrier & Sideband Suppression Aug. 10, 2005

Design & development

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

Hardware development


The TRF3703-17EVM evaluation module (EVM) is intended for the evaluation of the TRF3703-17 direct-launch quadrature modulator for applications in the transmit path of base stations and communications equipment.


The TRF3703-17EVM comes configured for differential I/Q input signals via four SMA connectors. There is an on board SMA connector which is used to monitor the RF output signal from the quadrature modulator. The LO signal is provided through an SMA connector as well.

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