Microwave Engineering Europe - March 2009 - (Page 30) 30 PRODUCTS Single-conversion tuner sharpens analog, digital TV broadcast reception MAX3542 overcomes these impairments and offers a typical image rejection of 70 dB while requiring a single external SAW filter. Applications include TVs, PCs, and set-top boxes. The MAX3542 can replace canned tuners, and has a standard 36 MHz IF that is compatible with most digital and analog demodulators. Additionally, the IC integrates tracking filters, a crystal oscillator circuit, a synthesizer, and an IF VGA to save space and simplify design over cannedtuner implementations. It draws 230 mA (typical) from a single 3.3 V supply. The MAX3542 is packaged in a 7mm x 7mm, 48-pin, leadfree, flip-chip (fcLGA) package, and is fully specified over the 0 to +70 degrees Celsius. www.mwee.com/214502672 Variable gain amplifiers for IF and RF applications over 30 to 1000 MHz filters in Tx and Rx applications, and with digital to analog converters in Rx chains. The device is housed in a RoHS compliant 4x4 mm QFN leadless package, and is CMOS/ TTL compatible. The HMC681LP5(E) is a digitally controlled variable gain amplifier which operates from DC to 1 GHz, and can be programmed to provide from 13.5 dB, to 45 dB of gain, in 0.5 dB steps. It delivers a noise figure of 2.8 dB in its maximum gain state, with output IP3 of up to +36 dBm in any state. This serially controlled digital VGA incorporates off chip AC ground capacitors for near DC operation, making it suitable for a wide variety of RF and IF applications. The amplifier is housed in a RoHS compliant 5x5 mm QFN leadless package, and provides the user with a highly integrated solution. www.mwee.com/214501611 Aimed at hybrid (analog and digital) applications, Maxim Integrated Products has developed a single-conversion silicon tuner that employs a single downconversion step from RF to 36 MHz to provide artifact-free reception of analog signals and high-quality reception of digital signals. Conventional products use either a dual-conversion architecture that requires two external filters or a direct-tolow-IF scheme that suffers from poor image rejection. The Integrated ISM-band transmitter reduces BOM by up to 40 percent Semtech is offering a highperformance integrated ISMband transmitter IC dubbed SX1230 that integrates all the radio components on a CMOS die, minimizing the need for other passive components and reducing the bill of materials by up to 40 percent Built using the company’s TrueRF technology, the transmitter features dual power amplifiers with 35 dB programmable output power, ranging from -18 dBm to +17 dBm with a constant radio performance over the full power supply and temperature range. TrueRF reduces phase noise so that the SX1230’s performance is a full 10 dB higher than competing devices with a signal purity that simplifies regulatory testing in both Europe (ETSI EN 300-220-1) and North America (FCC part 15.231,15.247 and 15.249), according to the company. The SX1230 can operate in the 315, 434, 868 and 915 MHz license-free ISM bands, and is power optimized for low consumption, drawing as low as 8 mA depending on output power level. The SX1230 features programmable data rates up to 600-kbit/s. It supports both narrowband and wide-band modes for use in professional and consumer applications such as automatic meter reading, remote control, and remote keyless entry. www.mwee.com/214502677 ● Hittite Microwave has introduced two digital variable gain amplifiers which are ideal for automotive, broadband, cellular/3G, WiMAX/4G, military and test & measurement equipment applications between 30 and 1000 MHz. The HMC680LP4(E) is a digitally controlled variable gain amplifier which operates from 30 to 400 MHz, and can be programmed to provide from -4 dB to 19 dB of gain, in 1 dB steps. It delivers a noise figure of 5 dB in its maximum gain state, with output IP3 of up to +40 dBm in any state. This high linearity DVGA also provides a differential RF output which can be used to interface directly with SAW 50 to 1000 MHz IF amplifier targets low-noise receiver and transmitter applications M/A-COM Technology Solutions has announced the release of a 50- to 1000-MHz MESFET intermediate frequency (IF) amplifier, designated MAAM-009116. This single stage high dynamic range IF amplifier comes in an industry standard SOT-89 package, ideally suited for receiver and transmitter applications. The amplifier exhibits excellent linearity while maintaining a low noise figure. These two critical parameters are a must for engineers developing receive and transmit functions for today’s complex communications systems. This SOT-89 packaged amplifier delivers 18.0 dB of gain, 22 dBm of output P1dB power and an outstanding 40 dBm of output IP3 Linearity. The MAAM-009116 delivers all this performance while maintaining a low noise figure of less than 2.4 dB. www.mwee.com/214501527 Microwave Engineering Europe ● March 2009 www.mwee.com http://www.mwee.com/214502672 http://www.mwee.com/214501611 http://www.mwee.com/214502677 http://www.mwee.com/214501527 http://www.mwee.com
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