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Op amps designed for industrial, instrumentation apps

Posted: 26 May 2006 ?? ?Print Version ?Bookmark and Share

Keywords:ADI? Analog Devices? AD866x? AD8662? AD8664?

Analog Devices' expanded portfolio of industrial grade op amps include five new entries that leverage the company's iCMOS manufacturing process and DigiTrim technology to provide performance and cost advantages for a variety of industrial and instrumentation applications.

The low-noise, rail-to-rail (5-16, or 18V operating voltage) products include dual and quad versions of the popular AD8661 operational amplifier; and a new series of low-cost, low-noise amplifiers in the AD866x family for buffering, level shifting, and filtering for large-signal applications.

"With the AD866x portfolio expansion, Analog Devices is covering a broader range of performance and price requirements to provide the best value for the precision needs of the industrial and instrumentation market segments," said Steve Sockolov, product line director, Precision Signal Processing Group. "Designers can get the level of accuracy and wide operating voltage range they need at competitive price points from a single supplier."

Like the single AD8661, the AD8662 (dual) and AD8664 (quad) op amps tout the industrys highest precision at 100V offset specified at 5V and 16V for applications that require high levels of DC accuracy such as industrial process control, motor control, medical instrumentation, and automotive sensors. The devices lower voltage offset improves accuracy by a factor of two to four over the closest competing devices, according to the company, and feature a drift temperature coefficient (Vos drift) of just 3V/0C (typical). The devices also offer wider gain bandwidth for higher speed applications. They are available in a lead frame chip scale package measuring 3-by-3mm, which is 70 percent smaller than a standard small-outline IC.

The complementary AD8665, AD8666, and AD8668 op amps are designed to offer higher performance at a lower price point than competing devices. Applications include reference buffering and level shifting, filtering, utility functions, ADC driving, and AC-coupled applications for low-noise, wide operating voltage applications. To meet the needs of small factor designs, the devices are available in a SOT-23.

All devices in the AD866x family were developed using ADIs iCMOS processing technology, which enables higher performance and integration. The AD8662 and AD8664 offer the added cost-efficiencies of ADIs DigiTrim trimming process and the first implementation of thin film fuse, ADI said, which reduces circuitry and design size resulting in lower manufacturing costs. iCMOS is a modular manufacturing process combining high-voltage CMOS and bipolar technologies. It enables the development of a wide range of high performance analog ICs capable of 30-volt operation.

DigiTrim is a patented trimming process that allows production of precision amplifier components at costs up to 30 percent lower than competitive solutions and with higher accuracy, by using internal digital circuitry to adjust specific performance parameters. The parts can be treated as a standard analog product and assembled without any additional processing or trimming, said ADI.

The AD8662 is available in full production quantities. The AD8664, AD8665, AD8666 and AD8668 are sampling with full production quantities expected in June. Available in a choice of packaging options, the devices are sold in 1,000 piece quantities as follows: AD8662ARMZ, 8-pin SOIC, 78 cents; AD8662ARZ, 8-pin MSOP, $1.35; AD8664ARUZ, 14-pin TSSOP, $2.20; AD8664ARZ, 14-pin SOIC, $2.20; AD8665ARJZ, 5-pin SOT-23, 58 cents; AD8665ARZ, 8-pin SOIC, 58 cents; AD8666ARMZ, 8-pin MSOP, 78 cents; AD8666ARZ, 8-pin SOIC, 78 cents; AD8668ARUZ, 14-pin TSSOP, $1.05; AD8668ARZ, 14-pin SOIC, $1.05.

- Vince Biancomano

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Related Datasheets
Part Number Description Category
? AD8662 Low Noise, Precision 16 V CMOS, Rail-to-Rail Operational Amplifiers Actives - Sensors and Transducers
? AD8666 16 V, 4 MHz Rail-to-Rail Output Amplifier 8-Lead Actives - Sensors and Transducers
? AD8665 Low Noise, Precision, 16 V, CMOS, Rail-to-Rail Operational Amplifier (Dual) Actives - Sensors and Transducers
? AD8664 16 V Precision Quad CMOS Rail - to - Rail Operational Amplifier Actives - Sensors and Transducers
? AD8668 16 V, 4 MHz Rail-to-Rail Output Amplifier 14-Lead Actives - Sensors and Transducers



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