Features and Benefits

  • 1 GHz to 26.5 GHz bandwidth
  • Ultralow noise PLL
  • Integer N: −234 dBc/Hz, fractional-N: −231 dBc/Hz
  • High maximum PFD frequency
  • Integer N: 250 MHz, fractional-N: 125 MHz
  • 25-bit fixed/49-bit variable fractional modulus
  • Single-ended reference input
  • 3.3 V power supply, 3.3 V charge pump
  • Integrated 1.8 V logic capability
  • Phase resync
  • Programmable charge pump currents: 16× range
  • Digital lock detect
  • 3-wire serial interface with register readback option
  • Hardware and software power-down mode

Product Details

The ADF41513 is an ultralow noise frequency synthesizer that can be used to implement local oscillators (LOs) as high as 26.5 GHz in the upconversion and downconversion sections of wireless receivers and transmitters.

The ADF41513 is designed on a high performance silicon geranium (SiGe), bipolar complementary metal-oxide semiconductor (BiCMOS) process, achieving a normalized phase noise floor of −234 dBc/Hz. The phase frequency detector (PFD) operates up to 250 MHz (integer N mode)/ 125 MHz (fractional-N mode) for improved phase noise and spur performance. The variable modulus Δ-Σ modulator allows extremely fine resolution when using a 49 bit divide value. The ADF41513 can be used as either an integer N phase-locked loop (PLL) or fractional-N PLL with either a fixed modulus for subhertz frequency resolution, or variable modulus for subhertz exact frequency resolution.

A complete PLL is implemented when the synthesizer is used with an external loop filter and voltage controlled oscillator (VCO). The 26.5 GHz bandwidth means a frequency doubler or divider stage can be eliminated, simplifying system architecture and reducing cost. The ADF41513 is packaged in a compact, 24-lead, 4 mm × 4 mm LFCSP.


  • Test equipment and instrumentation
  • Wireless infrastructure
  • Microwave point to point and multipoint radios
  • VSAT radios

Product Lifecycle icon-recommended Pre-Release

This product is new and engineering validation may still be underway. Quantities may be limited and design specifications may change while we ready the product for release to production.

Evaluation Kits (1)

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.


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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.

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Evaluation Boards Pricing displayed is based on 1-piece.
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.