ANALOG DEVICES’ HIGH-SPEED MULTI-CHANNEL ANALOG-TO-DIGITAL CONVERTERS REDUCE SYSTEM BOARD SPACE

Norwood, MA (11/19/2008) - Analog Devices, Inc. (ADI), the global data converter technology and market share leader, today introduced a pair of four-channel 12-bit analog-to-digital converters (ADCs) that use 50 percent less printed-circuit-board surface area than other ADCs in their class. The AD9239 and AD9639 quad analog-to-digital converters require only eight pins and traces, compared to as many as 26 in competing dual-channel devices, which yields space savings in high-speed signal processing applications, including cable infrastructure and point-to-point wireless communications equipment and spectrum analyzers. As part of a complete receive-path signal chain solution, the AD9239 and AD9639 quad ADCs are compatible with ADI’s variable gain amplifiers, including the AD8372 and AD8376.

The 250-MSPS (mega-sample-per-second) AD9239 incorporates an efficient packetized output scheme, while the 210-MSPS AD9639 supports a JESD204-compliant output scheme. Both ADCs feature on-chip PLL (phase-locked loop) and input buffer circuits, which are designed for low cost, low power, small size, and ease of use. The new ADCs require a single 1.8-V power supply, dissipating 1.5 W in normal mode and 145 mW per channel (typical) when standby-mode is enabled with the digital link remaining in operation. The new devices are also the first high-speed ADCs to feature an on-chip temperature sensor, which allows engineers to conduct thermal monitoring for optimized system operation. The quad ADCs offer excellent noise performance and achieve SNR (signal-to-noise ratio) of 65 dBFs, SFDR (spurious-free dynamic range) of 77 dBc and an ENOB (effective number of bits) of 10.5, all at an 85-MHz input frequency.

The AD9239 and AD9639 support an LVDS (low-voltage differential signal)-compatible sample-rate clock input and provide four serial digital output streams with coded data from each ADC channel. Clock information is also coded into each serial stream so that the receiving logic can extract the necessary clocking information. The AD9239 and AD9639 are available with ADI’s VisualAnalog™ evaluation and ADIsimADC™ behavioral software modeling tools.

Availability and Pricing

Product	Availability	Temperature Range	Price Each Per 1000	Packaging
AD9239-250	Now	–40°C to +85°C	$199	72-lead LFCSP
AD9239-210	Now	–40°C to +85°C	$143	72-lead LFCSP
AD9239-170	Now	–40°C to +85°C	$119	72-lead LFCSP
AD9639-210	Now	–40°C to +85°C	$143	72-lead LFCSP
AD9639-170	Now	–40°C to +85°C	$119	72-lead LFCSP

For more information on the AD9239 and AD9639 quad ADCs, visit http://www.analog.com/pr/AD9239 or http://www.analog.com/pr/AD9639.

Data Converters: Bridging the Analog and Digital Worlds
More designers turn to Analog Devices than any other supplier for the high-performance conversion technology required to bridge the analog and digital worlds in today’s myriad electronic systems. With the industry’s leading portfolio of ADCs (analog-to-digital converters) and DACs (digital-to-analog converters), Analog Devices’ converter products feature the right combination of sampling rates, accuracy and reduced noise, power, price and package size required in industrial and instrumentation, medical equipment, automotive systems, communications infrastructure, and consumer electronics. Online evaluation tools help customers quickly validate, select, and design in the optimal data converters to reduce design complexity, development schedules, and bill-of-material costs. To view ADI’s ADC selection guide, visit http://www.analog.com/ADCsearch. For ADC drivers, visit: http://www.analog.com/ADCdrivers. To view ADI’s DAC selection guide, visit http://www.analog.com/DACsearch.

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. Analog Devices is headquartered in Norwood, Massachusetts, with design and manufacturing facilities throughout the world. Analog Devices is included in the S&P 500 Index.

VisualAnalog and ADIsimADC are trademarks of Analog Devices, Inc.

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Editor's Contact Information:

Bob Olson
781-937-1666

bob.olson@analog.com