Analog Devices Introduces New PLL Synthesizer With High Voltage Charge Pump for Microwave Point-to-Point and
Private Mobile Radio Applications
New ADF4150HV PLL synthesizer incorporates 30-V charge pump and operates up to 4.4 GHz.
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
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
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, Inc.
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 technologies, Analog Devices serves over 60,000 customers, representing virtually all types of
electronic equipment. Celebrating over 40 years as a leading global manufacturer of high-performance integrated
circuits for analog- and digital-signal processing applications, Analog Devices is headquartered in Norwood,
Massachusetts, with design and manufacturing facilities throughout the world. Analog Devices' common stock is
listed on the New York Stock Exchange under the ticker “ADI” and is included in the S&P 500 Index.