Instrumentation Amplifiers achieve bandwidth up to 12 MHz.

Press Release Summary:

Available in 10-lead MSOP packages, digitally programmable Models AD8250 and AD8251 draw 3.5 mA, making them suitable for test, control, and high-speed data acquisition systems. Units operate with ±5 V to ±12 V power supplies, providing 12 MHz bandwidth and 0.5 µs settling time to 0.01%. Model AD8250 offers programmable gain settings of 1, 2, 5, and 10, while Model AD8251 provides gain settings of 1, 2, 4, and 8. Offset drift is 1 µV/°C and gain drift is 10 ppm/°C.

Original Press Release:

Analog Devices' Instrumentation Amplifiers Offer Unmatched Accuracy and Bandwidth for Test, Control, and High-Speed Data Acquisition Systems

- ADI's AD8250 and AD8251 programmable gain in-amps deliver best combination of speed and precision while offering the lowest power consumption in their class.

NORWOOD, Mass. - Analog Devices Inc. (NYSE: ADI), a global leader in high-performance semiconductors for signal processing applications and market leader in amplifier ICs, today introduced two digitally-programmable instrumentation amplifiers (in-amps) that offer unmatched accuracy and bandwidth, plus the speed and precision needed for advanced industrial and instrumentation applications. These applications, which include test, control and high-speed data acquisition systems, require fast, accurate measurements and robust signal conditioning over large voltage ranges.

The versatile AD8250 and AD8251 in-amps achieve bandwidth of up to 12 MHz-twice the throughput of the nearest competing device-while delivering 75 percent lower drift than comparable in-amp solutions.

Leveraging technological advancements enabled by Analog Devices' sub-micron iCMOS(TM) (industrial CMOS) process technology, the AD8250 and AD8251 digitally programmable in-amps draw just 3.5 mA-75 percent less than competing devices-and are available in space saving 10-lead MSOP (mini small-outline plastic) packages, which are 90 percent smaller than the nearest in-amps in their class.

"Data acquisition systems, automatic test equipment and biomedical instruments demand both high bandwidth and dc accuracy. Manufacturers have tried to achieve this with a variety of in-amps or a combination of discrete devices," said Steve Sockolov, product line director, Precision Signal Processing, Analog Devices. "By offering industry-leading bandwidth and precision, combined with low power consumption and a space-saving package, Analog Devices' new programmable in-amps allow our customers to increase performance and channel density while maintaining ease of use in their end equipment."

Large Voltage Ranges, Fast Settling Time, Low Drift
Designed specifically for industrial and instrumentation equipment with large voltage ranges, the AD8250 and AD8251 operate with +/-5 V to +/-12 V power supplies, providing 12 MHz bandwidth and 0.5 microsecond settling time to 0.01 percent. The 1 microvolt per degree C offset drift and 10 ppm per degree C gain drift are the lowest of any programmable gain in-amp.

Programmable Gain Setting
Additional flexibility is enabled through the new in-amp family's digitally programmable gain setting, which lets designers adjust gain even after the devices are designed into the system. The in-amps are identical but for their gain settings, with the AD8250 offering gain settings of 1, 2, 5 and 10, and the AD8251 gain settings of 1, 2, 4 and 8. The user interface allows designers to set the 2-bit gain-control word in one of three ways: it can be latched using the clock input; it can be set within 1 microsecond in transparent mode; or the bits can be strapped to a high- or low-voltage potential, permanently setting the gain.

Compatible with High Performance ADCs
The AD8250 and AD8251 in-amps are tailored to operate with high-performance ADCs, such as the AD7621, AD7671/74/77/78/79, AD7685 and AD7946 PulSAR(R) ADCs from Analog Devices, and with ADI's ADR431 and ADR435 voltage references.

Pricing and Availability
The AD8250 and AD8251 digitally programmable in-amps are sampling now, with production quantities available in October 2006. Housed in 10-lead MSOP packages, they are priced at $4.95 in 1,000-unit quantities. For more information, visit

Analog Devices in Industrial
For more than 40 years, Analog Devices has worked with its industrial customers to define, develop and deploy complete signal chain solutions that are optimized for their applications. ADI's legacy of supporting the sector's long product life cycles with multi-year manufacturing commitments is augmented by the company's educated sales force, knowledgeable field applications engineers and advanced design support tools that include evaluation boards and SPICE models.

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 more than 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.

Analog Devices, Inc.
804 Woburn Street
Wilmington, MA 01887
Tech Support: 781/937-1428
Fax: 781/937-1021
Andrew MacLellan Porter

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