Analog Devices' New Differential Amplifiers Drive High-Speed Converters to Maximum Performance Levels.

-Industry's lowest distortion differential amps deliver low noise, high bandwidth input to analog-to-digital converters used in high-speed communications and precision instrumentation applications.

NORWOOD, Mass. -- Analog Devices, Inc. (NYSE: ADI), a global leader in high-performance semiconductors for signal-processing applications and world leader in data converters and high- speed amplifiers, today expanded its industry-leading portfolio of differential amplifiers with products designed to maximize analog-to-digital data converter (ADC) performance. The performance of an amplifier driving an ADC is especially critical in high-speed communications systems and precision instrumentation equipment, where greater speed and dynamic range are needed to generate the higher data rates necessary to reduce dropped calls and decrease data collection errors. Analog Devices' new differential amplifiers feature best-in-class low distortion, low noise, high bandwidth and dual supply operation. These features, plus adjustable gain and output common mode voltage, a wide supply range, and small LFCSP packaging make the ADA4937-1 and ADA4938-1 differential amplifiers important additions to the best ADC driver portfolio available in the market.

The ADA4937-1: Industry's Lowest Distortion ADC Driver

The ADA4937-1 has 16-bit performance up to 40 MHz, 14-bit performance up to 70 MHz and 12-bit performance up to 100MHz. Ideal for single 3V to 5V power supplies, the ADA4937-1 achieves an industry-best distortion of -120/-102 dBc SFDR at 10 MHz, -98/-100 dBc SFDR at 40 MHz and -84/-90 dBC SFDR at 70 MHz.

The ADA4938-1: Industry's First Dual-Supply ADC Driver

A breakthrough in amplifier design, the ADA4938-1 works over a 5V to 10V supply range and achieves industry leading distortion of -112/-108 dBc SFDR at 10 MHz, -96/-93 dBc SFDR at 30 MHz and -79/-81 dBc SFDR at 50 MHz for dual-supply applications.

"Analog Devices is the pioneer of the differential amplifier architecture, having introduced the breakthrough AD8138 diff amp in 1999," said Jim Doscher, product line director, High-Speed Linear Products, Analog Devices. "Today, the ADA493x ADC drivers feature unprecedented low distortion--more than 10dBc over the competition. This allows designers to maintain key ADC performance characteristics, including spurious-free dynamic range and signal-to-noise ratio, which leads directly to improved system performance."

In addition, the devices feature an internal common-mode feedback architecture, which allows the output common-mode voltage to be controlled by a voltage applied to the VOCM pin. This feature bridges any gap between the output voltage range of the component before the ADC and the ADC input range, eliminating the need for ac coupling. This makes the solutions well suited for dc coupled applications such as data acquisition instruments and baseband communications systems.

The ADA4937-1 and AD4938-1 are ideal for driving state-of-the-art, high-speed, 12-, 14- and 16-bit ADCs, such as Analog Devices' AD9230 12-bit, 250 MSPS ADC; AD9254 14-bit, 250 MSPS ADC; and the AD9461 16-bit 130 MSPS ADC. The ultra-low distortion of the ADA4937-1 and ADA4938-1 is achieved through the use of ADI's XFCB-3, a proprietary and specialized silicon germanium (SiGe) silicon-on-insulator (SOI) complementary bipolar process technology.

Availability and Pricing

The ADA4937-1 and ADA4938-1 differential amplifiers are sampling now with full production scheduled for April and June 2007, respectively. The devices are priced at $3.79 per unit in 1,000-piece quantities in a 3 mm x 3 mm LFCSP (lead frame chip scale package) and are specified over an operating temperature range of 0 degrees C to + 85 degrees C. For more information, visit www.analog.com/pr/ADA4937 or www.analog.com/pr/ADA4938.

About Analog Devices

Innovation, performance, and excellence are the cultural pillars on which Analog Devices has built one of the most long-standing, high-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 around the world, representing virtually all types of electronics equipment. Celebrating 40 years as a leading global manufacturer of high-performance integrated circuits used in analog and digital signal processing applications, Analog Devices, Inc. is headquartered in Norwood, Massachusetts, and employs approximately 8,900 people worldwide. It has manufacturing facilities in Massachusetts, California, North Carolina, Ireland, and the Philippines. Analog Devices' common stock is listed on the New York Stock Exchange and ADI is included in the S&P 500 Index.