![]() The plot in Figure 3 shows the additive phase noise of the HMC-C070 at 5.5 GHz at temperatures of -40°, +25° and +85☌. Without SMA connectors, the module length decreases to 31.24 mm (1.23") and can also be used with SMP connectors if a quick release option is desired. Higher reference frequencies are possible by use of internal prescalers or by using the higher reliability integer mode PLL ICs.Īt 54.86 x 19.05 x 6.22 mm (2.16" x 0.75" x 0.245"), the HMC-C070 is a very compact module that is an order of magnitude smaller than competitive solutions. ![]() However, this reference frequency can range from 250 kHz to 75 MHz by modifying the loop filter design to optimize for the non-standard requirement. This value was chosen due to the common availability of this frequency at the rear panel of most current test equipment. The MicroSynth product has been designed to accept a 10 MHz reference signal. temperature at 5.5 GHz.Īt the core of the HMC-C070 design is a Hittite SiGe Fractional-N PLL chip that provides features such as frequency sweeping with programmable ramp and dwell times, frequency hopping, charge pump optimization, temperature monitoring, lock detection, hardware/software triggering, and three general-purpose I/O pins that can be programmed to drive subsequent serially-controlled devices. In addition, the modular nature of the design allows Hittite to provide customized designs to optimize performance for a given application and frequency range.įigure 3 HMC-C070 MicroSynth phase noise vs. Integrating a phase lock loop (PLL), broadband voltage-controlled oscillator (VCO), microwave amplifier and active loop filter, the HMC-C070 MicroSynth combines high performance SiGe, GaAs PHEMT and InGaP HBT technologies (see Figure 1), rugged construction, and an incredibly small form factor of 3.7 cm 3 (0.226 in 3). By leveraging its industry leading library of catalog and custom integrated circuits, Hittite is in a unique position to offer "best-in-class" integrated synthesizer solutions. The new MicroSynth™ integrated hermetic synthesizer product platform extends that portfolio by integrating many functions into one compact module. Hittite Microwave has one of the most comprehensive product portfolios and knowledge base that serves this critical function. Often dictated by specifications that push technological, spatial and economic envelopes, the design and implementation of frequency sources can often run into hurdles that force performance, schedule, or cost compromises. Frequency synthesis is the cornerstone of all RF and microwave systems.
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