Microwave Engineering Europe - December 2007 - (Page 35) PRODUCTS 35 Dual mode variable gain amplifiers cover DC to 6 GHz ideal for micowave radio and military applications transceivers that operate within the DC to 6 GHz frequency range. The HMC627LP5E is a 6-bit digital variable gain amplifier that delivers peak performance below 1 GHz with 20 dB of gain control, +36 dBm OIP3 and a low 4.3 dB noise figure contribution is achieved. Both the HMC625LP5E and the HMC627LP5E incorporate a dual mode interface that is CMOS/TLL compatible and accepts either 3-wire serial input or a 6 bit parallel word. For higher gain requirements, the HMC626LP5E provides 43 dB of gain control between DC to 500 MHz and 35 dB from 500 MHz to 1 GHz. In addition to the attenuation range of 31.5 dB, the device provides a noise figure performance of 4 dB and a typical OIP3 of +36 dBm. This single positive control line DVGA achieves DC operation making it suitable for a wide variety of RF and IF applications. All three amplifiers are conveniently housed in a 5x5-mm RoHS compliant QFN leadless package, require no external matching components and are specified for operation over -40 to +85 °C. www.mwee.com/202803697 Hittite Microwave Corporation has announced a family of dual mode digitally controlled variable gain amplifiers (DVGA) for microwave radio and military applications that operate in the frequency band of DC to 6 GHz. The amplifiers are an ideal choice for use in cellular infrastructure, test and measurement or military radio systems where an accurate signal level control and a low noise figure contribution is required. The HMC625LP5E is a 0.5 dB LSB GaAs MMIC 6-Bit digital variable gain amplifier that delivers a selectable gain range of 31.5 dB and an output 1 dB compression point of +19 dBm. An output third order intercept point of +33 dBm makes the it a popular choice within many Low noise gain block amplifier covers 2- to 18-GHz single bias operation is suitable for a wide variety of applications fiber optic, microwave radio, military, space, telecom infrastructure, test instrumentation and VSAT. The amplifier offers a unique combination of low noise figure and broadband output match by employing an industry-leading feedback stage to provide good noise figure that does not exist in typical distributed low noise designs. Integrated bias coils and on-chip DC blocking are all inclusive in the compact 4x4-mm QFN package. The device’s single bias operation works very well as a first or second amplifier stage in wideband system level receive chains or to provide gain and power in LO drive chains. The CMM1100-QF is the packaged version of the company’s popular CMM1100-BD die and enables customers to use standard high volume surface mount equipment for ease of pick up and assembly, www.mwee.com/202802362 Mimix Broadband has made available a two stage, low noise gain block amplifier that has a self-biased architecture, designated CMM1100-QF. It is offered in a 4x4-mm RoHS-compliant QFN package, and delivers excellent RF and thermal properties. The amplifier covers the 2 GHz to 18 GHz frequency bands, provides 3.8 dB noise figure, and delivers 15 dB gain and 15 dBm P1dB. It is well suited for a variety of applications, including Microwave Engineering ● December 2007 ● www.mwee.com 035_MWEE.indd Sec1:35 21/11/07 16:42:41 http://www.mwee.com/202803697 http://www.omniyig.com http://www.omniyig.com http://www.mwee.com/202802362 http://www.mwee.com
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