Microwave Engineering Europe - July/August 2008 - (Page 30)

30 PRODUCTS Low-power 300-450-MHz ASK receiver covers the automotive temperature range The MAX7034 low-power superheterodyne receiver for ASK data from Maxim Integrated Products covers the 300 MHz to 450 MHz frequency range. Only requiring a few external components to implement a complete receive-chain solution, this device integrates an LNA, image-rejection mixer, self-contained PLL block, 10.7 MHz IF filter with RSSI, and analog, baseband datarecovery circuitry. To ensure excellent receive sensitivity in automotive and consumer applications, these critical blocks have been designed to withstand high temperatures. Providing high, -114 dBm sensitivity and 44 dB of image rejection, the MAX7034 is ideal for applications such as remote keyless-entry systems, car alarms, home security systems, remote controls, and garage door openers. The architecture of this ASK receiver greatly simplifies implementation in any Single-chip ZigBee Platform-in-Package only requires an antenna and crystal Freescale Semiconductor is now sampling the nextgeneration MC13224 device in its single-chip IEEE 802.15.4/ ZigBee Platform-in-Package (PiP) family. This latest chip is designed for a range of wireless applications, including energy management, commercial building automation, industrial control and monitoring and home entertainment control. The family supports existing protocols, such as SMAC, IEEE 802.15.4 MAC, ZigBee stack and Synkro network protocol stack, with the ability to support the WirelessHART specification, ISA100 and 6LoWPAN. The MC13224 device integrates the essential components of an IEEE 802.15.4 based application within a single package, requiring designers to add only an antenna and crystal. The MC13224 contains a 32-bit ARM7 microcontroller (MCU), a fully compliant IEEE 802.15.4 transceiver, flash, RAM and ROM, highperformance peripherals, balun and RF matching components. This is all integrated into a small-footprint land-grid array (LGA) package that virtually eliminates the need for external RF matching components. The MC13224’s operating currents and RF performance specs include typical transmit currents of 28 mA and receive currents of 21 mA that can even be lower with MCU bus stealing enabled. It also delivers receive sensitivity of up to -100 dBm and maximum output power of + 5 dBm. Onboard power supply regulation is provided for source voltages from 1.8 Vdc to 3.6 Vdc, and can operate over an extended temperature range up to +105 °C. www.mwee.com/208800714 300 MHz to 450 MHz RF system. The input impedance of the LNA can be adjusted by varying the off-chip degeneration inductor, allowing it to accommodate a wide range of antenna designs. To further enhance flexibility, the center frequency of the fullydifferential, image-rejection mixer can be set to 315 MHz, 375 MHz, or 433 MHz. Additionally, the integration of image rejection eliminates the need for an external SAW filter in many applications, thus increasing sensitivity, simplifying the antennamatching network, saving board space, and reducing cost. www.mwee.com/208403028 RoHS compliant VCO features ultra low phase noise Z-Communications has announced the CLV1570B-LF RoHS compliant VCO (Voltage-Controlled Oscillator) for L-band applications. The VCO operates from 1560 to 1580 MHz with a tuning voltage range of 0.5 to 4.5 Vdc. It features a typical phase noise of -108 dBc/Hz at offset and a typical tuning sensitivity of 25 MHz/V. The CLV1570B-LF is designed to operate at 5 V DC supply while drawing 24 mA (typical) over the temperature range of -40 to 85 degrees Celsius. The VCO features typical 2nd harmonic suppression of -25 dBc and comes in the company’s industry standard MINI package with low shield Mini GPS module ideal for high-volume handheld applications Available from u-blox is a miniature GPS module designed for high-volume, mass-market applications that require fast, accurate positioning at a low cost. The standalone NEO-5Q GPS module combines an array of features with ﬂexible connectivity options in a miniature 12- x 16- x 2.4-mm package. The ROM-based architecture does not require an external Flash EPROM, making the NEO-5Q suitable for high-volume consumer products with strict cost and size constraints. Based on the company’s ﬁfth generation positioning engine, u-blox 5, the module provides an acquisition performance of one second and an engine with 50 channels and over one million correlators capable of simultaneously tracking GPS and GALILEO signals. The NEO-5Q GPS module also features the company’s new KickStart ultra-fast weak signal acquisition technology to ensure fast positioning regardless of signal positions and antenna size. The module’s serial peripheral interface (SPI) enables an external serial E2PROM to store unlimited start-up conﬁguration settings. www.mwee.com/208802733 measuring 0.50- x 0.50- x 0.13inches (1.27- x 1.27- x 0.33cm). It is available in tape and reel packaging for production requirements. The VCO is also ideal for automated surface mount assembly and reﬂow. The device is ideally suitable for microwave radio applications that require superior 2nd harmonic suppression and ultra low phase noise performance. www.mwee.com/208802736 Microwave Engineering Europe ● July/August 2008 ● www.mwee.com http://www.mwee.com/208800714 http://www.mwee.com/208403028 http://www.mwee.com/208802733 http://www.mwee.com/208802736 http://www.mwee.com

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Microwave Engineering Europe - July/August 2008 Contents News Comment Cover Feature: Effective EM Simulations with Micro−λ Resolution in Macro-λ Objects — General Huygens Box Implementation RF CMOS: Programmable Transceiver IC Minimises OEM Inventory for Femtocells CAD/EDA: Software-Defined Radio Platforms CAD/EDA: Cadence Enhances RF Verification While AWR Delivers an Improved Microwave Office How to Meet the Design Challenges of WiMAX Power Amplifiers Products Calendar

Microwave Engineering Europe - July/August 2008

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