BROADBAND, HIGH-LINEARITY, DEMODULATOR ENABLES HIGH DATA RATE MODEMS

ADL5387 wideband 50 MHz to 2 GHz demodulator for high capacity broadband modem applications.
ADL5837

Norwood, MA (05/21/2007) -
About the ADL5387
The ADL5387 high performance, wide input range demodulator enables high capacity digital modems for microwave radio transmission and next generation broadband access systems, such as 802.16 WiMAX and WiBro applications. Unlike competing and prior generations of demodulators, the ADL5387 provides one-of-a-kind wideband and broadband operation with increased performance and flexibility across an input frequency that spans 50 MHz to 2 GHz.

High capacity modems are implemented with higher order modulation, such as OFDM and 128QAM, across wider signal bandwidths. The ADL5387 addresses these requirements by integrating a highly accurate divide-by-two quadrature phase splitter with outstanding amplitude and phase balance, and high-linearity Gilbert cell mixers.

The mixer cores provide unequalled linearity—with +30-dBm third order intercept (IP3) at 900 MHz—and excellent demodulation accuracy with 0.1-dB amplitude and 0.5-degree phase accuracy. This highly balanced design provides >60 dBc LO rejection and low second order distortion, both critical specs for higher order demodulation applications. Additionally, the ADL5387 features a 240-MHz demodulation bandwidth, enabling demodulation of the widest of input signal bandwidths. The baseband output stage delivers a conversion gain of approximately 5 dB and high output drive, minimizing the need for auxiliary output amplifiers.

With these specifications and core attributes, the ADL5387 enables the highest capacity microwave modems, simplifies design, and allows operation across the widest range of input frequencies and signal bandwidths. The ADL5387 is ideally suited for use in the highest capacity microwave radio modems, and the IF signal paths of next generation broadband wireless access systems, such as 802.16 WiMAX and WiBro applications.

Availability and Pricing
Fabricated on Analog Devices’ XF3 silicon-on-insulator (SOI) SiGe complementary bipolar process, the ADL5387 is sampling today, and will be available in full production quantities in July 2007. The ADL5387 is packaged in a 24-lead small footprint LFCSP (lead-frame chip-scale package) with a price of $4.98 per unit in 1000-piece quantities.

About Analog Devices
Innovation, performance, and excellence are the cultural pillars on which Analog Devices has built one of the longest standing, highest growth companies within the technology sector. Acknowledged industry-wide as the world leader in data conversion and signal conditioning technology, Analog Devices serves over 60,000 customers, representing virtually all types of electronic equipment. Celebrating 40 years as a leading global manufacturer of high-performance integrated circuits used in analog and digital signal processing applications, Analog Devices is headquartered in Norwood, Massachusetts, with design and manufacturing facilities throughout the world. Analog Devices' common stock is listed on the New York Stock Exchange under the ticker “ADI” and is included in the S&P 500 Index.

Editor's Contact Information:

Linda Kincaid
781/937-1472
781/937-1078
linda.kincaid@analog.com

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