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Frequency Control
1.5 to 3.8 GHz Active Upconverting Mixer from Linear TechnologyA high dynamic range active upconverting mixer from Linear Technology replaces the best of today's passive mixers. The LT5579's wide frequency range of 1.5GHz to 3.8GHz covers the 1.9GHz cellular bands as well as the 2.6GHz and 3.5GHz WiMAX frequency bands. At 2.14GHz, the device offers 27.3dBm Output IP3 linearity and 9.9dB Noise Figure to deliver outstanding transmitter dynamic range. Moreover, the mixer has 2.6dB of conversion gain, the highest in its class. The device integrates Local Oscillator (LO) buffers, requiring only -1dBm to drive the LO port, while offering low -35dBm LO-to-RF leakage. 
Temperature-compensated crystal oscillators are down in size but not in performanceJust announced by Vectron International is a temperature-compensated crystal oscillator in a package just half the size of its predecessor. The VTM3 TCXO offers equivalent phase noise performance to the proven VTC4 and VTC1 TCXOs but in a smaller package measuring just 3.2mm x 2.5mm. 
Single Input/Output Any-Rate Clock Multiplier from Silicon LaboratoriesSilicon Laboratories has announced the expansion of its portfolio of reconfigurable, frequency-agile precision clocks to include a single input, single output jitter-attenuating clock multiplier IC. The new Si5319 Any-Rate Precision Clock is capable of generating any output frequency from either a crystal or reference clock input with 0.3 picoseconds jitter generation. 
Full-featured real time clocks are industry’s most accurate says IntersilIntersil has introduced the world's first full-featured, AC-driven Real Time Clock (RTC) devices. The new ICs will be designed into a wide range of industrial and consumer products, from power meters and security devices to white goods and other high-end appliances that require precise measurement of time. With integrated functionality such as dual alarms, event detection and a "brownout" alert, the new ISL12030 and ISL12032 have the broadest feature set of any RTCs on the market. 
PDI frequency control solutions to be distributed by the Abacus GroupPrecision Devices, the frequency control solutions manufacturer, has today announced a franchise distribution agreement with electronic component distributor Abacus. This agreement enables the Abacus Group to distribute and supply PDI's frequency control products in the UK and Ireland. 
XOs And VCXOs With Any-Rate Frequency SynthesisSilicon Laboratories has announced the Si570/1 family, said to be the industry's first user-programmable crystal oscillators (XO) and voltage-controlled crystal oscillators (VCXO) supporting any-rate frequency synthesis. Using patented DSPLL technology and an industry-standard I2C interface, a single device can generate any output frequency from 10 MHz to 1.4 GHz at jitter levels of 0.3 picoseconds rms. The Si570 Any-Rate XO and Si571 Any-Rate VCXO are ideal for high-performance applications requiring frequency flexible clock sources including next-generation networking equipment, wireless base stations, test and measurement equipment, HDTV video infrastructure and high-speed data acquisition equipment. 
High stability crystal oscillatorsMicrowave component specialist distributor, Aspen Electronics has announced the introduction of two new high stability crystal oscillators for high performance, high reliability wireless communications infrastructure applications. Designed and built in Germany by multinational market leader, Vectron International, the C4700 and C4550 crystal oscillators are compact in size and competitive in price. The C4700 is an ultra high stability double oven controlled crystal oscillator (DOCXO) with a reduced profile of just 17mm, making it the lowest profile DOCXO on the market. 
High-Frequency Inductors for matching-circuit applicationsTAIYO YUDEN has announced the availability of its AQ105 series of high-frequency inductors for matching-circuit applications in cell phones, notebook PCs and other wireless-enabled computer and communications devices. AQ105 series inductors employ a proprietary simulation technique that optimally characterizes the device's structural attributes to produce a typical Q value improvement of 100% or higher, compared to the company's earlier, industry-leading HK series inductors. At a measuring frequency of 0.8GHz, for example, the AQ105-2N2 device achieves a typical Q value of 67 versus 31 for the HK1005-2N2 series device with similar physical and electrical characteristics. At 1.8GHz, the same AQ series part provides a Q value of 101. 
Mini SMD Crystal is ideal for wireless applicationsThe SMD03025 (3.2 x 2.5 x 0.6 mm) SMD crystals series from specialist distributor PETERMANN-TECHNIK is available in frequencies from 13.0 – 40.0 MHz and in an extended temperature range of up to –40 to +105°C. A frequency tolerance of +-5 ppm at 25°C and a frequency stability +-3 ppm over -10°C to +55°C are possible. The standard aging is +-2 ppm max. after the first year, +-1 ppm is available on request. Larger frequency tolerances are also available. 
Low cost SMD crystal available in three package heightsThe HC-49/US-SMD series metal packaged SMD crystal, is said to be the lowest cost SMD crystal ever. It is available in three package heights with a frequency range from 3.5 to 80.0MHz and an extended temperature range from –40°C +125°C which make it suitable for the use in automotive applications. 
Low-cost clock oscillator is cheapest available says PETERMANN-TECHNIKSpecialist distributor PETERMANN-TECHNIK has announced the Series SXO-0507 SMD clock oscillator in a 7x5mm ceramic package and makes the claim that it is the cheapest clock oscillator ever. It is available in the frequency range 10.0kHz to 175.0MHz in CMOS and 1.0MHz to 800MHz in PECL technology with supply voltages of 1.8, 2.5, 3.3 and 5.0 VDC as well as in extended temperature ranges. Low current consumption and low jitter values are further key parameters. 
Anglia demonstrates its frequency control expertise in data bookJust published by Anglia, the 116 page "Frequency Data Book" describes a host of frequency generators, filters and saw devices in depth. Full data sheets are included for thousands of products including ceramic resonators, crystals, femto clocks, varactor and voltage controlled oscillators, temperature and oven controlled oscillators, and real time clock modules. 116-page data book from Anglia details thousands of frequency control productsJust published by Anglia, the 116 page "Frequency Data Book" describes a host of frequency generators, filters and saw devices in depth. Full data sheets are included for thousands of products including ceramic resonators, crystals, femto clocks, varactor and voltage controlled oscillators, temperature and oven controlled oscillators, and real time clock modules. 
Ultra low-profile power inductorsC&D Technologies has introduced a new family of miniature, surface mount, I-core power inductors. Ideal for use in designs with restricted PCB space and height, the ultra low-profile 8200 series is the smallest package size inductor introduced by C&D Technologies. 
Intersil's Real-Time Clocks can use lower-cost crystalsIntersil has introduced two micropower real-time clock/calendar devices. The ISL1218 and ISL1220 with on-chip timing and crystal compensation deliver accurate timekeeping with very low power dissipation. The introduction of the devices means that using a lower-cost, 32.768kHz quartz crystal is now a practical and accurate option. 
Surface-mount clock oscillators and VCXOs available in two weeks (or less)New from microwave and RF component specialist Link Microtek is a family of surface-mount clock oscillators and VCXOs that not only offer high performance but are available with exceptionally short lead times of typically 2 weeks or less. 
Pin-compatible replacement for obsolete Fairchild TMC2242 filterDT Electronics has made available the Logic Devices LF2242 digital filter as a direct replacement for the Fairchild TMC2242 which is now obsolete. The LF2242 is a 12/16-bit half-band interpolating/decimating digital filter that eliminates the tuning needed with analogue filters. 
Fully Integrated Filter Front End Module For GPS-Equipped Dual-Band CDMA HandsetsAvago Technologies has announced what it says is the first module to combine five individual FBAR (Film Bulk Acoustic Resonator) filters to produce a totally passive solution for dual-band cellular communications with GPS. The ACFM-7101 quintplexer module directs PCS and cellular signals from the same antenna without the use of switches and control logic, eliminating the cost and electrical loss of the switch, as well as routing and matching losses, and the space required for this functionality. 
Rubidium oscillators combine precision with cost benefitsHigh precision timing components manufactured by Temex Time are now available in the UK from RF & microwave and test equipment specialist, Aspen Electronics of Ruislip. Temex Time, based in Switzerland, is a leading designer and manufacturer of a full range of advanced, low-cost rubidium, smart GPS and multi-reference synchronised clocks, and high-precision test sets. 
Universal EMC Filters For Single-Phase ApplicationsSchaffner has announced two new filters with very high attenuation performance for universal single-phase applications. These two new filter series complement the proven FN 2000 filter family and are respectively, the FN 2030 and FN 2090. 
Ceramic Resonators for CANbus Applications.Murata, has announced the introduction of a new family of competitively priced, three terminal ceramic resonators targeted at CANbus applications. 
TCXO's save space and moneyAspen Electronics has announced the latest range of temperature compensated crystal oscillators (TCXOs) from Vectron International. 
RFI filter suits high frequency applicationsTyco has recently introduced the compact EJT filter series which attenuates noise up to 1GHz and is based around an IEC 320/C14 input connector providing a maximum rating of 20A (UL /CSA) and 16A (VDE). 
Low-Profile RoHS Compliant Crystal OscillatorFocus EDL announces a new crystal oscillator designed to combine small size and low power consumption. As a result, the VT-3225 from Nippon Crystal Inc is ideally suited for use in mobile communications applications. It meets all the requirements of the forthcoming RoHS regulations. 
Off the Shelf Standard Resonators - Characterisation Not RequiredA selection of devices from Murata's CERALOCK range of ceramic resonators are now available as standard parts from the company's distribution network. 
SAW Oscillator For Low Jitter PLLsThe VS720 voltage controlled SAW oscillator (VCSO) from Aspen Electronics is an ultra low jitter, tight temperature stability, SAW-based oscillator is aimed at telecoms, wireless and data communications applications. 
High-Rel Oscillators Suit Cost Critical ApplicationsThe Herley-CTI Series phase-locked dielectric resonator oscillators (PDROs)from Aspen Electronics are designed for high reliability, cost critical applications, suiting both commercial and military, satellite and microwave, communications systems. |
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