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 Products May 1, 2005 12:00 PM Active Components
Coaxial microwave switches
Teledyne Relays has introduced the series CCR-39 coaxial switches, a family of broadband, multithrow, latching microwave devices that deliver up to six-pole, seven-throw performance and that offer an indicator option for status feedback for diagnostics. The characteristic impedance is 50 Ohms. The switches are compact and use the popular connector spacing on a circle with a 1.062 inch (26.97 mm) diameter. Each position has an individual actuator mechanism, allowing random position selection. The CCR-39 comes with a latching actuator rated at 12 Vdc, 15 Vdc or 28 Vdc. The latching feature allows the user to pulse operate the switch, conserving power. The switch remains in the last position selected when it is de-energized. Variations include CCR-39 with or without indicator contacts, self-cutoff only and moisture seal. Amplifiers
GaAs pHEMT MMIC buffer amp
Mimix Broadband Inc. has introduced a gallium arsenide (GaAs) monolithic microwave integrated circuit (MMIC), three-stage buffer amplifier. Using 0.15-micron gate length GaAs pseudomorphic high electron mobility transistor (pHEMT) device model technology, this buffer amplifier covers the 18 GHz to 38 GHz frequency bands and can operate at 3.5 V or 5.5 V. This device can also be operated with all three stages biased in parallel or with independent bias for input and output stages, as required to optimize performance. This MMIC device has a small signal gain of 21 dB with a noise figure of 3.2 dB across the band. It also has 11 dBm OP1dB at low noise bias or can provide 15 dBm OP1dB at power bias. Engineering samples are available from stock, and production quantities are available six to eight weeks ARO. GaAs MMIC power and driver amplifiers
Mimix Broadband Inc. has introduced a gallium arsenide (GaAs) monolithic microwave integrated circuit (MMIC), three-stage balanced power amplifier and complementary three-stage driver amplifier. Both the balanced power amplifier and the driver amplifier use 0.15-micron gate length GaAs pseudomorphic high-electron mobility transistor (pHEMT) device model technology. The power amplifier 44MPA0478 has a balanced design and covers the 43.5 GHz to 46.5 GHz frequency bands. It has a small signal gain of 13 dB with +29 dBm P1dB compression point. The driver amplifier 44MPA0470 covers this same frequency band and achieves a signal gain of 13 dB with +24 dBm P1dB compression point. Used as a driver and final stage cascade, this chip set achieves +26 dB gain and 1 W output power. 802.11 power amplifiers
MicroWave Technology Inc., an IXYS company, has released two power amplifier (PA) products for 802.11 WiFi and 802.16 WiMAX base station applications. The WPS-495922-02 power amplifier operates over the 4.9 GHz to 5.9 GHz band with 11 dB gain and 32 dBm output power at 1 dB compression point. Based on MwT's MESFET technology, the power amplifier achieves an EVM performance of 2.5% at 26 dBm output power level driven by WiMAX test signal (256 carriers and 64 QAM). The EVM performance also includes 1.6% of accumulated errors from the modulator and driver stages. The ACPR is less than -40 dBc at 25 dBm average output power, and the IP3 is as high as 47 dBm at 22 dBm output power per tone. The WPS-495922-02 is pre-matched to 50 Ohms for easy cascade. The PA is biased at 7.5 V drain voltage and about 600 mA direct current. The WPS-495922-02 is packaged in MwT 02 package, a surface-mount LLC package. The WPS-2527LD5-98 power amplifier operates over 2.5 GHz to 2.7 GHz band with 10 dB gain and 37 dBm output power at 1 dB compression point. The LDMOS-based PA achieves efficiency of 40% and EVM performance of 2.5% at 33 dBm output power level driven by WiMAX test signal. The ACPR is less than -40 dBc at 33 dBm average output power, and the IP3 is 50 dBm at 33 dBm output power per tone. The WPS-2527LD5-98 is pre-matched to 50 Ohms with input and output load impedance greater than 10 Ohms. The PA is biased with 26 V of drain voltage and 100 mA of quiescent direct current. Samples of the WPS-495922-02 and WPS-2527LD5-98 and the corresponding evaluation boards are available. LDMOS power modules
Sirenza Microdevices has released the SDM series of LDMOS power modules for wireless infrastructure applications. These LDMOS power modules operate in the frequency range of 800 MHz and 900 MHz. The SDM08120 and SDM09120 both have a gain of 15 dB and power-handling capability of 120 W. Each module also features internal electrostatic discharge (ESD) protection. The SDM series is available for immediate shipment. HBT W-CDMA amplifiers
Agilent Technologies Inc. has announced its family of power amplifier (PA) modules featuring CoolPAM technology. CoolPAM significantly reduces battery power consumption and allows mobile handsets to run cooler. All versions of the CoolPAM W-CDMA product line can operate at 3.2 V to 4.2 V. They all incorporate 50 Ohm input and output matching networks for simple integration and are equipped with a control pin that sets operating parameters for highest efficiency when operating at low-output power levels. All versions are compatible with HSDPA, a packet-based data service providing data transmission at up to 10 Mbps, and 20 Mbps for MIMO systems over a 5 MHz bandwidth. The CoolPAM W-CDMA devices are supplied in a 4 mm × 4 mm × 1.4 mm, 10-pin surface-mount module. The Agilent WS2512, WS2411 and WS1111 power amplifier modules are priced at $1.30 each in moderate quantities. InGaP HBT WiMAX power amps
Anadigics has received production orders for the AWM6430 InGaP HBT 3.5 GHz class AB power amplifiers for fixed-point WiMAX applications. Anadigics is developing a portfolio of WiMAX power amplifiers that support next-generation 2.5 GHz and 3.5 GHz 802.16e mobile applications. The integrated 4.5 mm × 4.5 mm AWM6430 WiMAX PA module provides an integrated step attenuator and output power detector. It offers fully matched RF ports and can operate from either a single 5 V or 6 V power supply. Anadigics' WiMAX PA is compatible with IEEE 802.16-2004 and ETSI EN301-021 standards and complies with the European Union's RoHS directive. Samples of the AWM6430 are available now. Power amplifier module
Hittite Microwave Corporation has introduced the HMC-C008. The HMC-C008 is a 15 W PA module suitable for cellular and 3G repeaters, laboratory use and ATE applications. The unit includes dc power sequencing, enable and conditioning, as well as an output circulator for load mismatch protection. Thermal protection/fault circuitry automatically turns off dc power at base temperatures exceeding +75 °C and restores power at < +55 °C. Low-noise amplifier
A family of VGAs from Daico Industries provides small signal gain in 1 dB increments up to +19 dBm P1 dB. Precise embedded digital attenuators allow users to output any gain from -1 dB to 30 dB. Three models offer a frequency range of 60 MHz to 2100 MHz with noise figure down to 1.3 dB. The VGAs include internal 6 W CW limiter and SMA connectors. 802.11b/g SiGe power amplifier
Atmel Corporation has announced the availability of its WLAN power amplifier (PA) for the WLAN market. The 2.4 GHz PA ATR7032 meets the 802.11b/g standard and is manufactured using Atmel's silicon germanium (SiGe) technology. SiGe enables operation at a supply voltage range of 2.7 V to 3.6 V. The ATR7032 offers the following performance characteristics: 32 dB gain, a linear power output of 23 dBm at 11 Mbps CCK, and an error vector magnitude (EVM) of 1.4% at an output power of 19 dBm under 54 Mbps OFDM conditions. The integrated PA includes an on-chip temperature-compensated power detector with a dynamic range of 20 dB, and standby/bias control logic that provides shutdown and power-saving options. Furthermore, the PA includes fully on-chip input and interstage matching. Samples of the WLAN PA ATR7032 in a QFN package measuring 3 mm × 3 mm are available. Atmel also provides a fully assembled evaluation board. MMIC amplifier
Usable to 4 GHz, these high 25 dB gain amplifiers from Mini-Circuits feature both a high IP3 of +38 dBm and a low 2.5 dB NF. Even after passing grueling operating life tests of 5000 hours at elevated ambient temperature of 125 °C, these new rugged units still offer protection against unwanted transient supply voltages. They are offered at a low price of $2.35 each (quantity 25) and $1.85 each (quantity 1000). Operational amplifiers
National Semiconductor Corp. has launched two amplifier products. The LMH6703 has a shutdown feature, provides 0.1 dB gain flatness out to 150 MHz, and features a low second/third-harmonic distortion of -87/-100 dBc at 5 MHz for driving single-ended high-speed ADCs. Likewise, the LMH6704 is a 650 MHz programmable gain buffer with internal gain-setting resistors, allowing the user to set the gain at -1, +1 or +2. It provides a shutdown feature, 0.1 dB gain flatness out to 200 MHz, and low second/third harmonic distortion of -62/-78 dBc at 10 MHz. Both the op-amps, LMH6703 and LMH6704, are available in SOIC-8 and SOT23-6 packages. They are each priced at $1.49 in 1000-unit quantities. Broadcast and Satellite Communications
Video pre-processor
Modulus Video Inc. has announced a video pre-processing (VPP) option for the ME1000 AVC standard definition (SD) encoder for broadcast and other quality-driven video applications. The VPP option “cleans” the source video, enabling the ME1000 to further deliver on Modulus' twin goals of increasing image quality and reducing bandwidth requirements using MPEG-4 AVC. VPP for ME1000 incorporates motion-compensated temporal filtering (MCTF) technology from LSI Logic, which has been specially tuned for Modulus Video's high-performance MPEG-4 AVC systems. HDTV transceiver
NEC Corporation has developed a 60 GHz band wireless transceiver that transmits uncompressed high-definition TV (HDTV) signals. Both uncompressed HDTV signals and stereo audio signals are transformed into a 1 Gbps digital datastream and then converted to 60 GHz band to allow wireless transmission by using ASK modulation. The dimensions are 70 mm × 50 mm × 15 mm (52 cc.). High-frequency components, such as monolithic ICs, filters and oscillators are all built into a ceramic module using flip-chip bonding, which enables easy assembling with less tuning, as well as a reduction in size. A path diversity scheme is introduced in the equipment to reduce the chance of link-disconnection problems associated with indoor use. A dual receiver configuration enabling two transmission paths ensures continuous transmission. GPS module
u-blox AG has announced the availability of LEA-LA, the company's smallest GPS receiver module. Measuring 17 mm × 22 mm, it is a 40% reduction of the TIM product family without compromising performance and functionality. The LEA-LA is powered by the 16-channel, low-power ANTARIS chipset. ANTARIS features advanced WAAS / EGNOS support, a 34 s cold start time, and multipath suppression. Video networking and microwave solution
Harris Corporation has introduced the Harris Video Networking and Microwave solution. This combination of two systems — the NetVX networking system from Harris' Broadcast Communications Division and the TRuepoint next-generation microwave digital radio system from its Microwave Communications Division — allows global video network operators such as broadcasters, public safety agencies and other content distributors to transport conventional and digital video, audio and data traffic across common carrier and Studio Transmitter Link (STL) environments. NetVX is an integrated, high-speed network connectivity solution that can establish links with all packet-based (ATM and IP) services for movement of media between physically disparate locations. Digital TV RFIC
Sirenza Microdevices has released the S510067, an RF silicon CMOS 3.3V RF integrated circuit (RFIC) for intermediate frequency (IF) digital TV applications. This IC is designed for use in VSB/NTSC receivers, PC TV tuners, VSB/QAM/NTSC tuner network interface modules (NIM) and integrated HDTVs and set-top boxes. The RFIC includes two linear input automated gain control (AGC) amplifiers and IF video amplifiers in one package. In addition, the IC operates from 20 MHz to 100 MHz, has a gain range of 14 dB to 68 dB and has more than 54 dB of total gain control range. The S510067 is offered in industry-standard QFN-28 or 20-pin TSSOP packages and is RoHS compliant. RFIC test evaluation boards with complete typical applications circuits are available on request. GPS receiver
Trimble has introduced its next generation of GPS receivers for GIS data collection and mapping. The GPS Pathfinder ProXH receiver is an integrated GPS receiver, antenna and battery all in a compact and lightweight unit. The ProXH receiver uses Bluetooth technology for cable-free communication to a field computer and Trimble's H-Star technology to provide subfoot (30 centimeter) positioning accuracy. In addition to the ProXH receiver, the GPS Pathfinder Pro series also includes the ProXT receiver. In the same convenient form factor as the ProXH, the ProXT receiver delivers submeter accuracy. Trimble H-Star technology is a combination of the ProXH receiver technology, field data collection techniques and post-processing that allows users to achieve subfoot accuracy. With the addition of an external Zephyr antenna, eight-inch (20 centimeter) accuracy can be obtained. The ProXH and ProXT receivers come with a variety of mounting options: belt, backpack, range pole or on a vehicle. Design Software
PLL circuit design
Analog Devices Inc. has released a version of its phase-locked loop (PLL) circuit design and evaluation tool. ADIsimPLL Version 2.7 features enhanced synthesis and simulation capabilities, as well as expanded libraries and Web access, further streamlining the RF development process for customers of ADI's fractional-N and integrated VCO/PLL products. The tool supports simulations of non-linear effects that affect PLL performance. It adds loop filter options that allow designers to optimize the synthesis algorithms and lower the loop filter's contribution to the overall PLL phase noise. An expanded library of voltage-controlled oscillator (VCO) characterization data ensures accurate simulations, and the library data also has Web-based references. Analog Devices PLL libraries have been updated to reflect the company's latest product offerings (ADF4193 Fractional-N PLL synthesizer, ADF7020 ISM-band transceiver) as well as ADI's integrated VCO/PLL products (ADF4360-x). ADIsimPLL Version 2.7 is available free of charge as a download, allowing designers to run simulations locally. Signal integrity
Applied Wave Research Inc. has announced the AWR SI 2005 design suite, which AWR says is a cross-domain signal integrity (SI) solution specifically developed for designing and analyzing high-frequency, high-speed electronics circuits. AWR SI 2005 provides comprehensive signal integrity analysis capabilities built on top of Analog Office Intelligent Net (iNet) technology, an interconnect-driven/RF aware methodology focused on accurate RF/microwave interconnect modeling and analysis throughout the entire design process. The AWR SI software suite also includes support for multiple electromagnetic (EM) simulation and analysis tools, as well as a variety of modeling formats such as SPICE netlist, IBIS models, and S-parameter blocks. AWR SI 2005 design suite is available as a stand-alone product for new seats or as an upgrade to existing Analog Office and Microwave Office design seats. The product supports Linux and Windows XP. Embedded Technology
FPGA
Xilinx Inc. has announced the availability of its Virtex-4 LX200 device. In addition to logic, the device features a host of unique embedded IP functions such as built-in FIFO control logic and dedicated circuitry for memory and source synchronous interfaces in every I/O cell. The FPGA provides 200,448 logic cells, 6,048 Kbits of 500 MHz block RAM with unique built-in FIFO control logic and ECC, 96 XtremeDSP slices, each supporting 500 MHz 18 × 18 multiply and accumulate operations while consuming 2.3 mW/100 MHz. Peer-to-peer transceivers
Aerocomm has introduced peer-to-peer technology, embedded into AC4790 transceivers. AC4790s remove the server from an RF communications system, facilitating fully expandable mesh networking. The wireless system complements AeroComm's server-client based AC4490 transceivers, giving any OEM the flexibility to choose the protocol that best suits the application. By using a dynamic addressing scheme, AC4790's protocol supports independent communications between any two in-range transceivers in an RF network. Each transceiver “node” knows which other nodes are within talking distance, as well as the signal strength of each. The OEM can design routing sequences that optimize the network without bogging down system performance. An optional API command processor controls packet delivery and acknowledgment (on a packet-by-packet basis) and reports to the host device, greatly reducing OEM software development. Additionally, AC4790s feature industry-leading 25 ms sync times and SenseAdjust — a software-controlled RF desensitizer that wards off interference. AC4790 supports hundreds of industrial applications, including those where devices must be able to communicate with one another seamlessly. Some examples are automatic meter reading, industrial automation, vending control and utility monitoring. Microwave and Millimeter-wave Technology
Hybrid-band reject filter
The 3BRX-1765.5/115-SR from Lorch Microwave is a hybrid-band reject filter with bidirectional inputs. The filter features a 3 dB typical bandwidth of 30 MHz. The notch depth is 40 dB at 1765.5 MHz. The VSWR is 2.0:1 from 500 MHz to 3000 MHz, excluding the notch area. The physical size is 1.25 × 0.75 × 0.40 excluding SMA female removable connectors. This filter is also available in SMT configuration. HMIC mixer
M/A-COM has broadened its portfolio of surface-mount, high-IP3, high-isolation HMIC high-barrier mixers. The latest addition to the family, the MA4EXP400H-1277T, is for use in base station and infrastructure equipment. Manufactured in a standard 3 mm2 FQFP-N, 16-lead (MLP) package, the MA4EXP400H-1277T covers the frequency band of 3500 MHz to 4500 MHz. These 50 Ohm monolithic mixers require no additional components for circuit tuning. The high-barrier, double balanced, passive mixer design produces an input IP3 in excess of + 24 dBm for excellent system linearity across the frequency band at LO drive levels of +17 dBm. The compact mixers also deliver an average LO-RF isolation of better than 43 dB with conversion loss values less than 8 dB. MA4EXP400H-1277T is manufactured using M/A-COM's HMIC heterolithic, silicon-glass process, which produces highly repeatable silicon-based devices, and high-Q passive components in a low-loss, low-dispersion glass circuit medium. Designed for use in receiver and transmitter applications, such as frequency up/downconversion and IQ modulation and demodulation, these mixers are suitable for multiple applications to exceed cost, performance, and size design objectives. Next-Generation Wireless
WiFi chipset for PCI
The Broadcom BCM4311 PCI Express-enabled 802.11a/g baseband processor has an integrated media access controller (MAC). The BCM4311 offers the benefits of the PCI Express bus architecture while continuing to deliver the performance, range and ease-of-use found in all 54g solutions. The chip features BroadRange technology, an advanced digital signal processing technique that allows devices based on 54g technology to stay connected at distances up to 50% farther from a wireless router than previous-generation solutions. The BCM4311 also supports Broadcom's OneDriver software, which offers a number of features to improve performance, security and ease-of-use for WiFi networks. UWB transceiver
Wisair has released its second-generation fully monolithic WiMedia-MBOA RF transceiver 502 chip, leveraging Wisair as the first UWB provider to embark on pre-production. The 502 chip has been integrated into Wisair's reference designs and is available for customers, enabling OEMs to rapidly develop their own UWB-based applications. The 502 chip replaces the 501 version, which was the industry's first WiMedia — MB-OFDM-compliant transceiver providing a bit rate up to 480 Mbps. The second-generation 502 chip experienced a further reduction in power consumption, and its die size was significantly reduced. The 502 chip provides antenna diversity by supporting two antennas simultaneously. It supports MB-OFDM TFI and FFI modes and occupies a frequency spectrum range between 3.1 GHz to 4.8 GHz with three sub-bands of 528 MHz each. The 502 chip incorporates internal filtering providing coexistence with Bluetooth as well as 802.11a/b/g. WiMax transceiver
SiGe Semiconductor Inc. has announced a transceiver chipset designed to optimize performance of WiMAX systems, broadband wireless access (BWA) applications and wireless local loop equipment. The transceiver is equipped with multiple baseband interfaces and is able to support HD-FDD BPS-IF, HD-FDD IQ and TDD IQ baseband controllers. This, combined with a wide bandwidth of 3.3 GHz to 3.8 GHz and 2.3 GHz to 2.7 GHz, allows manufacturers to use a single solution to address worldwide frequencies. Samples of the transceiver chipset are available, with production scheduled for the third quarter 2005. Home control chip
Zensys has launched its second-generation chip, the ZW0201, for the home control space. The ZW0201 system on chip (SoC) is a wireless solution consisting of an integrated RF transceiver, an 8051 microcontroller, flash and SRAM memory storage and a range of peripherals. RFID chip
Royal Philips Electronics has tested engineering samples of an RFID chip compliant with EPCglobal's UHF Electronic Product Code (EPC) class 1 generation 2 (G2) standard. Philips' UCODE EPC G2 chip provides regulatory compliance to simplify worldwide implementations of RFID. With the availability of class 1 G2 solutions, both prior UHF technology solutions (class 0 and class 1 generation 1) standardized by EPCglobal can now be replaced. EPC G2 also addresses the differing regional regulatory environments for the UHF bands allocated for RFID, allowing UHF to be used worldwide, enabling these organizations to deploy a unified RFID supply chain infrastructure throughout the world. UCODE EPC G2 features a one-time programmable memory for the 96-bit EPC, covers all mandatory commands and provides a selection of optional commands as specified in the EPCglobal class 1 G2 standard. The chip uses an anti-collision algorithm that enables the reading of as many as 1600 labels per second under current U.S. regulations, and up to 600 labels per second under current European regulations. Through a flexible implementation of the application field identifier (AFI), the IC will be able to support EPCglobal and pending ISO 18000-6c coding structures. The UCODE EPC G2 chip is scheduled for mass production in the third quarter. Passive Components
Center-probe RF socket
Aries Electronics has introduced a center-probe RF test socket designed for use with Delta handlers. The test sockets incorporate built-in, replaceable, aligning features to accommodate the Delta nest, ensuring maximum speed and ease of use. The patented center probe contact of the Aries test socket provides the same test height regardless of device lead pitch. The socket body can be reused for multiple devices with only the interposer needing replacement. The socket also incorporates an integral hard stop to facilitate highly accurate device placement and probe activation. To further speed operation, solderless spring probes enable the socket to pressure-mount to the test board. Specifications for the new test socket include a probe self inductance of 0.51 nH; insertion loss of -1 dB at 18 GHz; contact resistance of less than 70 milliOhms; and contact forces of 12 to 15 grams/contact for devices with 0.50 mm to 0.65 mm pitch, and 17 to 20 grams/contact for devices with 0.80 mm pitch or larger. Pricing for a Delta Handler-compatible center probe test socket for an 1156-pin BGA package starts at $2467 for 1 piece. Delivery is six weeks ARO. Base materials
Isola Group Sarl has announced the launch of the following three materials for the RF and microwave market, IS640-300 with a nominal dielectric constant of 3.00 at 10 GHz, IS640-320 with a nominal dielectric constant of 3.20 and IS640-325 with a nominal dielectric constant of 3.25. IS640-300 has a dissipation factor less than 0.0032 at 10 GHz, and IS640-320 and IS640-325 have dissipation factors around 0.0035. The products are currently available in 20, 30 and 60 mil thickness configurations and complement the existing IS640-338 and IS640-345 product offering. Other thickness configurations may be available on request. Multiband antennas
PCTEL Inc.'s Antenna Products Group has launched a line of multiple-band antennas designed to operate with dual band or wideband radios transmitting in multiple microwave frequencies. The product portfolio includes a high-gain omnidirectional mast-mount antenna and a high-gain directional panel antenna for outdoor installations, plus four in-building wireless data antenna models. All of the models in the line have been optimized to cover 2.4 GHz to 2.48 GHz, and 4.94 GHz to 5.85 GHz frequencies. The model MMO24580608 mast-mount omnidirectional antenna provides 6 dBi gain at 2.4 GHz and 8 dBi at 4.9 GHz to 5.85 GHz frequencies. It features a UV stable radome. Similarly, the MP24581820PT directional panel antenna provides 18 dBi gain at 2.4 GHz and 20 dBi gain at 4.9 GHz to 5.85 GHz frequencies. This panel features UL-listed 94-V0 plastic and PC board, and a vented radome design. It can be ordered with adjustable uptilt/downtilt mounts and is terminated with an N female connector. Semiconductor Technology
CMOS switches
Skyworks Solutions Inc. has announced the availability of two CMOS switches for satellite receiver applications. The new SKY13264-340LF and SKY13272-340LF deliver higher levels of integration, are easier to implement and offer customers a lower cost alternative when compared to existing GaAs or Si components. The low-noise block (LNB) is located at the focus of the satellite dish antenna and amplifies weak signals approximately 60 dB, then converts the received microwave satellite signal to a lower frequency, reducing signal loss incurred in the coaxial cable between the satellite dish and the indoor receiver. The switch matrix is responsible for connecting each indoor receiver to the satellite transponder selected by the viewer's channel of choice. The SKY13264-340LF and SKY13272-340LF are 4 × 2 switch matrices combining a digital decoder with the RF switching network, accomplishing the same function as GaAs-silicon hybrid circuits or 32 RF PIN diodes and discrete bias circuitry. These switches are Pb-free and assembled in 4 mm × 4 mm plastic packages. They are designed with four high-frequency inputs and two high-frequency outputs, requiring only four control lines to put the switch in one of 16 possible states. The SKY13264-340LF and the SKY13272-340LF are available for sampling and priced at less than $1 in quantities of 10,000. Time and Frequency
SMT oscillator
Raltron Electronics Corp. has released a series of SMT clock oscillators with low supply voltage and current requirements in a ceramic package measuring 3.2 mm × 2.5 mm × 1.0 mm. These oscillators are intended for applications such as WLAN, WiMAX, UWB, DBS, digital camera, notebook PCs, HDD, PDA and cell phones. The COM1 series features a standard supply voltage of 1.8 Vdc with 2.5 Vdc and 3.3 Vd versions also available. Typical supply currents are as low as 5 mA maximum for lower frequencies at 1.8 Vdc. The frequencies range from 1.544 MHz to 60 MHz with stability specifications of ±25, ±50 or ±100 ppm. The operating temperature range is 10 °C to 70 °C. Pricing at a frequency of 40 MHz with ±100 ppm stability is $0.90 each. Low-noise frequency synthesizers
Micro Lambda Wireless has introduced a frequency synthesizer. Covering the frequency ranges of 2 GHz to 20 GHz and 1 GHz to 22 GHz, the synthesizers are controlled by a standard PC or by a laptop computer through the parallel port using a five-wire serial command structure. The frequency step size of these units is 1 Hz or controlled by the user to obtain the necessary step size required by a systems architecture. The synthesizers provide an absolute frequency accuracy of ½ Hz. Power output across the full frequency range of 2 GHz to 20 GHz of +20 dBm minimum and across 1 GHz to 22 GHz of +17 dBm minimum is provided. Power output leveling is available as a standard option providing for +/-20 dBm around a 0 dBm output level. The units measure 7 inches × 5 inches × 2 inches, excluding connectors and weigh 3.5 pounds. Non-PLL clock switchover multiplexer
Micrel Inc. has launched the SY89840U-SY89843U, SY89837/8U family of LVDS, CML and LVPECL clock multiplexer ICs. The chips feature patent-pending runt-pulse elimination (RPE) and fail-safe input (FSI) circuitry. The SY8984x MUX series offer a non-PLL clock switchover (primary-to-secondary) circuit that guarantees no runt pulses (short cycles) when the inputs are switched. Another feature is an input stage that prevents unwanted oscillations and maintains output stability when an input signal's differential signal collapses or disappears. This 2:1 multiplexer family includes options with integrated fanout buffers. Pricing for the ICs start at $2.55 for 1K quantities. Tx/Rx Technology
Downconverter
Mimix Broadband Inc. has introduced a gallium arsenide (GaAs) monolithic microwave integrated circuit (MMIC) fundamental balanced mixer, which has been optimized for use as a downconverter. Using 0.15-micron gate length GaAs pseudomorphic high electron mobility transistor (pHEMT) device model technology, this mixer covers the 32 GHz to 42 GHz frequency bands. The device has conversion loss of 8 dB with 22 dBm input third-order intercept point. This mixer, identified as XM1000, is intended for wireless communications applications such as millimeter-wave point-to-point radio, local multipoint distribution services (LMDS) and SATCOM. Samples are available from stock, and production quantities are available six to eight weeks ARO. RFID kits
WJ Communications Inc. has announced the availability of the MIB1000 kit. The MIB1000 kit is built on circuit card assembly (CCA) providing a standard serial or USB control interface to WJ's multiprotocol UHF RFID PC-card products. The MIB1000 kit features RS-232, CMOS logic and USB communications protocols with onboard test points and mounting holes for system integration. The unit works with all WJ MPR series PC card products, accompanying WJ's free GUI demo software or hosting programs. The MIB1000 kit includes the CCA, an A/C power supply, USB interface cable and a serial interface cable. RF transceiver and transmitter
Chipcon AS has announced two products based on its SmartRF04 technology platform. The CC1100 multichannel RF transceiver and the CC1150 multichannel RF transmitter operate in the 315 MHz, 433 MHz, 868 MHz and 915 MHz license-free ISM bands. The CC1100 and the CC1150 share many similarities to Chipcon's 2.4 GHz CC2500 RF transceiver and CC2550 RF transmitter. Pin and register compatibility allows Chipcon's customers to use the same firmware for systems operating at 2.4 GHz and below 1 GHz. The receiver of the CC1100 has a high sensitivity (-110 dBm at 1.2 kbps) and is designed for robust operation with excellent selectivity and blocking performance. The multichannel capabilities of the CC100 and CC1150 make them suitable for frequency-agile, listen-before-transmit and frequency hopping (FHSS) systems. The devices support FSK, GFSK, ASK/OOK, and MSK modulation methods. The CC1100 is offered in a 4 mm × 4 mm 20-pin QFP package, and the CC1150 in a 4 mm × 4 mm, 16-pin QFP package. The CC1100 and CC1150 are supported by a combined development kit, the CC1100/CC1150DK. Volume shipments will start in the third quarter. Wireless chipsets
Texas Instruments (TI) has expanded its portfolio of wireless signal-chain solutions for broadband wireless access by introducing three RF chipsets, the TRF11xx at 2.5 GHz, the TRF12xx at 3.5 GHz, and the TRF24xx at 5.8 GHz. The new chipsets are designed to support IEEE 802.16d/e standard RF front end for wireless base stations, access points, as well as equipment backhaul, point-to-point microwave, and public safety band applications. These chipsets can support emerging WiMAX and WiBro applications based on the IEEE 802.16 standard, as well as the more traditional fixed wireless access. Both the TRF11xx chipset at 2.5 GHz and the TRF12xx chipset at 3.5 GHz consist of four chips, each with fully integrated super heterodyne receivers and transmitters. These RF chipsets are capable of supporting frequency division duplex (FDD), half-frequency division duplex (HFDD), and time-division duplex (TDD) modes with a real interface at low IF to the data conversion subsystem. The TRF11xx and TRF12xx are also complemented by the optimized power amplifiers, TRF1123 and TRF1223. Supporting a range of frequencies between 2.1 GHz and 2.7 GHz and 3.3 GHz and 3.8 GHz, these power amplifiers provide an output third-order intercept point (OIP3) of 45 dBm or better, enabling the support of complex OFDM (orthogonal frequency division multiplexing) signals. TI's TRF2432 and TRF2436 heterodyne transceiver chipset consists of an IF and RF transceiver, and the chips support the 4.9 GHz to 5.9 GHz air interface frequency band. The chipset supports TDD mode with complex I/Q interface. All three TI chipsets — the TRF11xx at 2.5 GHz, the TRF12xx at 3.5 GHz, and the TRF24xx at 5.8 GHz — are sampling. RS-232 transceivers
Linear Technology Corp. has introduced a family of single and dual RS-232 transceivers that operate over an input supply range from 1.8 V to 5.5 V. The low voltage accommodates systems powered from two alkaline, NiCd or NiMH cells, or systems that interface directly to a low-voltage logic supply. Offering 1 microampere shutdown current and a 15 microamperes receiver-active current, the ICs are a suitable solution for any application that communicates through the RS-232 interface. The LTC2802 and LTC2804 support up to 1 Mbps data rates for proprietary diagnostic links. The LTC2801 and LTC2803 are capable of rates as high as 250 kbps. The ICs integrate a boost converter for generating the required RS-232 output signal levels. Control pins invoke optional shutdown, receiver active and driver disable features. The ±10 kV ESD protection on the RS-232 pins guards against electrostatic discharges that can be encountered during operation. The LTC2801 and LTC2802 are single transceivers, offered in 3 mm × 4 mm DFN packages. The LTC2803 and LTC2804 are dual transceivers offered in 16-lead SSOP and 16-lead DFN packages. Pricing begins at $1.60 each in 1000-piece quantities.
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