Analog Devices Debuts Industry's Highest Performing 13 GHz PLL Synthesizer

Phase detector on the new ADF4159 can operate up to 110 MHz and consumes less than 100 mW; includes high resolution 25-bit fractional-N modulus and on chip FMCW ramp generation

Analog Devices, Inc. announced the industry’s highest performance 13 GHz PLL synthesizer. The ADF4159 achieves breakthrough phase detector operating frequency of 110 MHz and simultaneously consumes less than 100 mW of power, which is 5 times less than competitive solutions. In addition, the ADF4159 contains a 25-bit fixed modulus as well as on-chip functionality to generate highly linear ramp profiles, making it an ideal solution for Frequency Modulated Continuous Wave (FMCW) radar applications, including automotive radar systems, microwave Point-to-Point (PtP) systems, communications instrumentation and test equipment.

The ADF4159 Fractional-N PLL Synthesizer consists of a low-noise digital phase frequency detector (PFD), precision charge pump and a programmable reference divider. It can be used to implement frequency shift keying (FSK) and phase shift keying (PSK) modulation. There are also a number of frequency sweep modes available, which generate various waveforms in the frequency domain, such as sawtooth and triangular waveforms. The ADF4159 features cycle slip reduction circuitry, which leads to faster lock times, without the need for modification to the loop filter.

ADF4159 PLL Synthesizer Key Features:

• RF bandwidth to 13 GHz
• Phase detector operates up to 110 MHz in fractional-N mode
• High and low speed FMCW ramps generation
• 25-bit modulus allows sub-hertz frequency resolution
• Frequency and phase modulation capability
• Phase noise Figure of Merit –222dBc/Hz

Pricing, Availability and Complementary Products

The ADF4159 PLL synthesizer is well-suited for use with a number of ADI devices including the ADF5001 RF prescaler, ADP150 low dropout linear regulator and the OP184 operational amplifier.

analog.com