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ADRF6703:  1550 MHz TO 2650 MHz Quadrature Modulator with 2100 MHz TO 2600 MHz Fractional-N PLL & Integrated VCO

Product Details

Product Status:Recommended for New Designs

The ADRF6703 provides a quadrature modulator and synthesizer solution within a small 6 mm × 6 mm footprint while requiring minimal external components.

The ADRF6703 is designed for RF outputs from 1550 MHz to 2650 MHz. The low phase noise VCO and high performance quadrature modulator make the ADRF6703 suitable for next generation communication systems requiring high signal dynamic range and linearity. The integration of the IQ modulator, PLL, and VCO provides for significant board savings and reduces the BOM and design complexity.

The integrated fractional-N PLL/synthesizer generates a 2× fLO input to the IQ modulator. The phase detector together with an external loop filter is used to control the VCO output. The VCO output is applied to a quadrature divider. To reduce spurious components, a sigma-delta (Σ-Δ) modulator controls the programmable PLL divider.

The IQ modulator has wideband differential I and Q inputs, which support baseband as well as complex IF architectures. The single-ended modulator output is designed to drive a 50 Ω load impedance and can be disabled.

The ADRF6703 is fabricated using an advanced silicon-germanium BiCMOS process. It is available in a 40-lead, exposed-paddle, Pb-free, 6 mm × 6 mm LFCSP package. Performance is specified from −40°C to +85°C. A lead-free evaluation board is available.

Applications

  • Cellular communications systems
    GSM/EDGE, CDMA2000, W-CDMA, TD-SCDMA, LTE
  • Broadband wireless access systems
  • Satellite modems

FEATURES and BENEFITS

  • IQ modulator with integrated fractional-N PLL
  • RF output frequency range: 1550 MHz to 2650 MHz
  • Internal LO frequency range: 2100 MHz to 2600 MHz
  • Output P1dB: 14.2 dBm @ 2140 MHz
  • Output IP3: 33.2 dBm @ 2140 MHz
  • Noise floor: −159.6 dBm/Hz @ 2140 MHz
  • Baseband bandwidth: 750 MHz (3 dB)
  • SPI serial interface for PLL programming
  • Integrated LDOs and LO buffer
  • Power supply: 5 V/240 mA
  • 40-lead 6 mm × 6 mm LFCSP

Functional Block Diagram for ADRF6703

Documentation

Title Content Type File Type
ADRF6703: 1550 MHz to 2650 MHz Quadrature Modulator with 2100 MHz to 2600 MHz Frac-N PLL and Integrated VCO Data Sheet (Rev B, 10/2011) (pdf, 317 kB) Data Sheets PDF
AN-1100: Wireless Transmitter IQ Balance and Sideband Suppression  (pdf, 185 kB) Application Notes PDF
Integrated Devices Arm Infrastructure Radios
These highly integrated circuits combine PLLs, VCOs, modulators, and mixers using an advanced SiGe BiCMOS process to save space without sparing electrical performance.
(Microwaves & RF, September 2009)
Technical Articles HTML
Industry’s First Half Watt RF Driver Amplifier with Dynamically Adjustable Bias and Extended Temperature Range (10 Apr 2012) Press Releases HTML
RF Source Booklet  (PDF, 4353 kB)
RF IC Product Overview - Version P (02/2014)
Overview PDF
Reduce Design Complexity without Sacrificing Performance Overview HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
ADIsimRF
ADI’s ADIsimRF design tool provides calculations for the most important parameters within the RF signal chain, including cascaded gain, noise figure, IP3, P1dB, and total power consumption.
ADIsim Design/Simulation Tools HTML
ADIsimPLL™- Version 3.60.10
ADIsimPLL enables the rapid and reliable evaluation of new high performance PLL products from ADI. It is the most comprehensive PLL Synthesizer design and simulation tool available today. Simulations performed include all key non-linear effects that are significant in affecting PLL performance. ADIsimPLL removes at least one iteration from the design process, thereby speeding the design- to-market.
ADIsim Design/Simulation Tools HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

Product Recommendations & Reference Designs

Companion Products

Suggested Companion Products


Recommended RF/IF Driver Amplifiers and Gain Blocks for the ADRF6703

  • For the full listing of frequency and driving level options, we recommend the ADL5xxx selection table.
Recommended Differential Dual Baseband TxDAC's for the ADRF6703
  • For generating differential I and Q currents up to 125MSPS, we recommend the AD911X pin compatible family of low power, small size, TxDAC's like the AD9117.
  • For even lower power requirements up to 125MSPS, we recommend the pin compatible AD971X family of TxDAC's like the AD9717.
  • For higher bandwidths using data rates up to 250MSPS, with low noise and IMD, we recommend the pin compatible AD974X family of CMOS TxDAC's like the AD9747 or AD9125 if interpolation is required.
  • For direct conversion transmit applications up to 500 MSPS, we suggest the pin compatible AD978X family of LVDS TxDAC's like the AD9783 or AD9122 if interpolation is required.
Recommended Power Solutions

  • For selecting voltage regulator products, use ADIsimPower.

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Price, packaging, availability

Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

ADRF6703 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADRF6703-EVALZ Status: Production Evaluation Board - Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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