- New ADF4150HV PLL synthesizer incorporates 30-V charge pump and operates up to 4.4 GHz.

Norwood, MA (05/19/2010) - Analog Devices, Inc. (ADI), a global leader in high-performance semiconductors for signal-processing applications and leading provider of RF ICs (radio frequency integrated circuits), announced today the availability of a new PLL (phase locked loop) synthesizer for a variety of applications, including microwave point-to-point systems, PMR (private mobile radio), VSATs (very small aperture terminals), test and instrumentation equipment, and aerospace systems. The ADF4150HV 4.4 GHz fractional-N or integer-N PLL synthesizer features a 30-V charge pump. A charge pump capable of 30-V drive level represents the highest voltage IC PLL charge pump available on the market today. Because the device can be used to directly drive high tuning-voltage external VCOs (voltage controlled oscillators), it removes the need for active loop filters, thereby simplifying system design, improving performance and reducing bill of materials cost.

Designed based on ADI’s industry-leading RF and PLL synthesizer design expertise, the ADF4150HV facilitates improved overall synthesizer phase noise performance, by allowing the use of passive loop filter topologies which do not tend to degrade phase noise when compared to active loop filters. Furthermore, the device incorporates high performance on-chip frequency dividers allowing the VCO frequency to be divided by 2, 4, 8 or 16 to allow the user to generate RF output frequencies as low as 31.25 MHz. Since the ADF4150HV has a 30-V charge pump capability it allows designers to consider wideband (octave range) VCOs. Hence, with the on-chip dividers provided on the ADF4150HV, a designer can simultaneously realize a synthesizer with multi-octave tuning capability as well as low phase noise afforded through the use of an external VCO. This is ideal for systems that require high performance and an ultra-wide tuning range.

Additional ADF4150HV PLL Synthesizer Features and Benefits:

  • High voltage charge pump: 6 to 30 V
  • 3 to 3.6 V power supply
  • Programmable dual-modulus prescaler of 4/5 or 8/9
  • Programmable output power level and charge pump currents
  • Analog and digital lock detect
  • Slew mode for fast lock

The ADF4150HV is supported by ADIsimPLL Version 3.3 design tool, a new version of which was also announced today. This new version features many updates and improvements, such as support for 16 new devices, increased phase noise modeling accuracy and Fractional-N spur level estimation, along with enhancements to the tool’s New Design Wizard, Time Simulation Engine and Time Domain Simulator features. More details can be found here.

ADF4150HV Pricing, Availability and Complementary Products
The ADF4150HV is available now in a 32-LFCSP package and priced at $2.49 per unit in 10,000-unit quantities. It is well-suited to work with ADI’s new ADF5000, ADF5001 and ADF5002 RF prescalers, ADL5801 and ADL5802 mixers and is supported by the ADIsimPLL design tool. More information, including complete data sheets is available at

ADI’s RF IC Portfolio Covers Entire RF Signal Chain
Using a unique combination of design skills, system understanding and process technologies, Analog Devices offers the broadest portfolio of RF ICs covering the entire RF signal chain from industry-leading high-performance RF function blocks to highly integrated WiMAX and short-range, single-chip transceiver solutions. The RF function blocks include DDS and PLL synthesizers; TruPwr™ rms power detectors and logarithmic amplifiers; X-Amp® VGAs; power amplifiers, LNAs and other RF amplifiers, mixers and direct conversion modulator and demodulator products. These products are supported by a wide range of free design tools to ease the development of RF systems. For more information, visit:

About Analog Devices

Innovation, performance, and excellence are the cultural pillars on which Analog Devices has built one of the longest standing, highest growth companies within the technology sector. Acknowledged industry-wide as the world leader in data conversion and signal conditioning technology, Analog Devices serves over 60,000 customers, representing virtually all types of electronic equipment. Analog Devices is headquartered in Norwood, Massachusetts, with design and manufacturing facilities throughout the world. Analog Devices is included in the S&P 500 Index.

ADIsimPLL, TruPwr and X-Amp are trademarks of Analog Devices, Inc.

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Editor's Contact Information:

Colleen Cronin

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