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Date: 20-06-12

13GHz PLL synthesizer from ADI for FMCW radar and microwave PtP applications

Analog Devices, Inc. (ADI) has announced the 13 GHz PLL synthesizer ‘ADF4159’. The device achieves phase detector operating frequency of 110 MHz and consumes less than 100 mW of power. The ADF4159 contains a 25-bit fixed modulus and on-chip functionality to generate linear ramp profiles.

The synthesizer solution can be used for frequency modulated continuous wave (FMCW) radar applications, including automotive radar systems, microwave Point-to-Point (PtP) systems, communications instrumentation and test equipment.

The synthesizer consists of a digital phase frequency detector (PFD), 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 many frequency sweep modes available, which generate various waveforms in the frequency domain, such as sawtooth and triangular waveforms. The device also features cycle slip reduction circuitry, which leads to faster lock times, without the need for modification to the loop filter.

Features:
1. RF bandwidth to 13 GHz
2. Phase detector operates up to 110 MHz in fractional-N mode
3. High and low speed FMCW ramps generation
4. 25-bit modulus allows sub-hertz frequency resolution
5. Frequency and phase modulation capability
6. Phase noise Figure of Merit -222dBc/Hz

“Designers of FMCW radar systems, microwave Point-to-Point communications and test equipment require high frequency solutions that are capable of operating in very high phase detector frequencies without any sacrifice in power consumption,” said Peter Real, vice president, Linear and RF Group, Analog Devices, Inc. “As the latest member of ADI’s leading family of PLL synthesizers, the ADF4159 represents an ideal solution for these applications by delivering best-in-class phase-detector frequency of operation and power consumption.”
 

Product Sample availability Full production Price each in 1,000 quantities Packaging
ADF4159 Now Q4 2012 $7.49 4 X 4 mm 24-LFCSP

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