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ADRF6601:  300 MHz TO 2500 MHz Rx Mixer with Integrated Fractional-N PLL and VCO

Product Details

Product Status:Recommended for New Designs

The ADRF6601 is a high dynamic range active mixer with an integrated phase-locked loop (PLL) and a voltage controlled oscillator (VCO). The PLL/synthesizer uses a fractional-N PLL to generate a fLO input to the mixer. The reference input can be divided or multiplied and then applied to the PLL phase frequency detector (PFD).

The PLL can support input reference frequencies from 12 MHz to 160 MHz. The PFD output controls a charge pump whose output drives an off-chip loop filter.

The loop filter output is then applied to an integrated VCO. The VCO output at 2 × fLO is applied to an LO divider, as well as to a programmable PLL divider. The programmable PLL divider is controlled by a sigma-delta (Σ-Δ) modulator (SDM). The modulus of the SDM can be programmed from 1 to 2047.

The active mixer converts the single-ended 50 Ω RF input to a 200 Ω differential IF output. The IF output can operate up to 500 MHz.

The ADRF6601 is fabricated using an advanced silicon-germanium BiCMOS process. It is available in a 40-lead, RoHS-compliant, 6 mm × 6 mm LFCSP with an exposed paddle. Performance is specified over the −40°C to +85°C temperature range.


  • Cellular base stations


  • Rx mixer with integrated fractional-N PLL
  • RF input frequency range: 300 MHz to 2500 MHz
  • Internal LO frequency range: 750 MHz to 1160 MHz
  • Input P1dB: 14.5 dBm
  • Input IP3: 31 dBm
  • IIP3 optimization via external pin
  • SSB noise figure
    IP3SET pin open: 13.5 dB
    IP3SET pin at 3.3 V: 14.6 dB
  • Voltage conversion gain: 6.7 dB
  • Matched 200 Ω IF output impedance
  • IF 3 dB bandwidth: 500 MHz
  • Programmable via 3-wire SPI interface
  • 40-lead, 6 mm × 6 mm LFCSP

Functional Block Diagram for ADRF6601


Title Content Type File Type
ADRF6601: 300 MHz to 2500 MHz Rx Mixer with Integrated Fractional-N PLL and VCO Data Sheet (Rev B, 01/2014) (pdf, 2531 kB) Data Sheets 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
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
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 Differential Amplifiers for the ADRF6601

  • For adjustable gain with external resistor, we recommend the AD8351.
  • For ultralow distortion and adjustable gain with external resistor, we recommend the AD8352.
  • For ultralow distortion, pin strappable gain adjust, we suggest the ADL5561.
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.

ADRF6601 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
ADRF6601-EVALZ Status: Production Evaluation Board $150.00 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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