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Dual op amp lowers voltage noise by 80 percent

Posted: 10 Oct 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Analog Devices? ADI? AD8599? op amp? iPolar?

ADI's AD8599 op amp

Analog Devices Inc. (ADI) has unrolled a dual op amp for medical, instrumentation, ATE and other industrial applications that require low noise without sacrificing precision. Said to be the industry's only dual op amp to specify 1nV/Hz voltage noise at 1kHz over a wide operating voltage range up to 36V, ADI said AD8599 lowers voltage noise by 80 percent compared to standard amplifiers. Available in the same package as many single op amps, this new op amp allows a much higher level of integration, the company said.

This low-noise, small-footprint op amp is suitable for closed loop gain, error amplifier configurations and transimpedance applications, such as microphone pre-amps, buffers for precision DACs and photodiode amplifiers. The device comes in an 8-lead SOIC package that requires less board space. It also reduces the cost of external components by including a compensation capacitor for unity gain stability, according to ADI.

The AD8599 is designed using the company's proprietary iPolar high-voltage process technology, which promises high precision and gain stability. The device also offers 3.5pA/Hz current noise and less than 0.001 percent distortion, both of which are required to maintain the highest levels of precision for audio signal sources, transimpedance (current-to-voltage amplification) and other error feedback amplifier circuits that require high closed-loop gain and stability.

The AD8599, available today in full production quantities, is priced at $4.25 in 1,000-piece quantities. Housed in an 8-lead SOIC package, it is specified over a 5V to 15V voltage range and the -40C to 125C extended industrial temperature range.

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Related Datasheets
Part Number Description Category
? AD8599 Dual, Ultralow Distortion, Ultralow Noise Op Amp Actives - Sensors and Transducers



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