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Hittite Press Release - March 2, 2011
Hittite's New 8 GHz Ultra-Low Phase Noise Synthesizer!
- Unsurpassed DC - 8 GHz Ultra-Low Phase Noise Synthesizer!
Integer-N & Fractional-N Modes with Phase
Noise Figure-of-Merit as low as -233 dBc/HzF
Chelmsford, MA, 03/02/2011 – Hittite Microwave Corporation, the world class supplier of complete
MMIC based solutions for communication & military markets, announces the release of a new ultra-low phase noise
synthesizer IC. The
HMC704LP4E has been designed for best phase noise and lowest spurious content possible in an integrated
HMC704LP4E is the ideal synthesizer for use in high density signal constellation applications that require
excellent integrated phase noise such as microwave point-to-point radio links. The excellent performance of this
product makes it ideal for use in cellular, satellite and military applications operating at frequencies up to 8
GHz, especially where ultra-low phase noise and fast frequency switching are paramount.
HMC704LP4E features a 4 GHz 19-bit fractional divider, 24-bit delta-sigma modulator, 14-bit reference path
divider, ultra low noise phase frequency detector (PFD) and a precision controlled charge pump. The device also
supports extensive access to various modes of operation via a read/write serial port. Exact frequency mode with
24-bit fractional modulator provides the ability to generate fractional frequencies with zero frequency error, an
important feature for Digital Pre-Distortion (DPD) systems.
In its normal mode of operation, the
HMC704LP4E floor Figure-of-Merit is -230/-227 dBc/Hz in integer and fractional modes. In a special HiK mode,
these figures reach -233/-230 dBc/Hz. Phase noise is -112 dBc/Hz at 8 GHz, 50 KHz offset in fractional mode.
With common channel spacing (200 kHz, 20 kHz loop bandwidth), Spurious-Free Dynamic Range (SFDR) of 78 dB is
typical. Even under worst case conditions, with the synthesizer tuned to within 20 KHz of an integer multiple of
the comparison frequency, SFDR still exceeds 52 dB.
HMC704LP4E is conveniently housed in a 4 x 4 mm RoHS compliant QFN leadless package and is specified for
operation over -40 °C to +85 °C. Released data sheets may be found at www.hittite.com. Samples and evaluation PC boards are available from stock and can be ordered via the
company's e-commerce site or via direct purchase order.
About Hittite Microwave Corporation
Hittite Microwave Corporation is an innovative
designer and manufacturer of high performance integrated circuits, or ICs, modules, subsystems and instrumentation
for technically demanding digital, RF, microwave and millimeterwave applications covering DC to 110 GHz. The
Company's standard and custom products apply analog, digital and mixed-signal semiconductor technologies, which
are used in a wide variety of wireless/wired communication and sensor applications for Automotive, Broadband,
Cellular Infrastructure, Fiber Optics, Microwave & Millimeterwave Communications, Military, Test & Measurement,
and Space markets. The Company is headquartered in Chelmsford, Massachusetts.
Hittite Microwave Corporation
20 Alpha Road
Chelmsford, MA 01824