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Analog Devices Inc. ADF41510 Integer-N/Fractional-N PLL Synthesizers

Analog Devices ADF41510 Integer-N/Fractional-N PLL Synthesizers are ultra-low noise frequency synthesizers used to implement local oscillators (LOs) as high as 10GHz in the upconversion and downconversion sections of wireless receivers and transmitters. The ADF41510 is designed on a high-performance silicon germanium (SiGe), bipolar complementary metal-oxide semiconductor (BiCMOS) process, achieving a normalized phase noise floor of -235dBc/Hz.

The PFD operates up to 250MHz (integer-N mode)/125MHz (fractional-N mode) for improved phase noise and spur performance. The variable modulus, ∑Δ modulator, allows excellent resolution using a 49-bit divide value. The ADI ADF41510 can be used as an integer-N PLL or a fractional-N PLL with either a fixed modulus for subhertz frequency resolution or a variable modulus for subhertz exact frequency resolution.

A complete PLL is implemented when the synthesizer utilizes an external loop filter and voltage-controlled oscillator (VCO). The 10GHz bandwidth eliminates the frequency doubler or divider stage requirement, simplifying system architecture and reducing cost.

The ADF41510 is housed in a compact, 24-lead, 4mm x 4mm LFCSP package.

Features

  • 1GHz to 10GHz bandwidth
  • Ultra-low noise phase locked loop (PLL)
    • Integer-N = -235dBc/Hz, fractional-N = -231dBc/Hz
  • High maximum phase frequency detector (PFD) frequency
    • Integer-N = 250MHz, fractional-N = 125MHz
  • 25-bit fixed/49-bit variable fractional modulus mode
  • Single-ended reference input
  • 3.3V power supply, 3.3V charge pump
  • Integrated 1.8V logic capability
  • Phase resync
  • Programmable charge pump currents in 16x range
  • Digital lock detect (DLD)
  • 3-wire serial interface with register readback option
  • Hardware and software power-down mode
  • Operating range of -40°C to +105°C

Applications

  • Test equipment and instrumentation
  • Wireless infrastructure
  • Microwave point-to-point and multipoint radios
  • Very small aperture terminal (VSAT) radios
  • Aerospace and defense

Associated Eval Boards

Analog Devices Inc. EV-ADF4151x Evaluation Boards

Demonstration boards used to used to evaluate the features of the ADF41513 PLL Synthesizer.

Learn Moreacerca de Analog Devices Inc. EV-ADF4151x Evaluation Boards View Productsrelacionado con Analog Devices Inc. EV-ADF4151x Evaluation Boards

Functional Block Diagram

Block Diagram - Analog Devices Inc. ADF41510 Integer-N/Fractional-N PLL Synthesizers
Publicado: 2024-07-23 | Actualizado: 2024-08-02