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Low-noise op amps reduce supply current to 1?A

Posted: 16 Feb 2011 ?? ?Print Version ?Bookmark and Share

Keywords:operational amplifiers? low-noise op amp? supply current?

Maxim Integrated Products introduces the MAX9636-MAX9638 rail-to-rail, low-noise operational amplifiers. The devices are available in 6-pin SC70 (single), 8-pin SC70 (dual) and 10-pin UTQFN (dual) packages.

With 38nV/rt-Hz input-voltage noise density, 50fA/rt-Hz input-current noise density and 0.1pA input-bias current, the MAX9636, MAX9637 and MAX9638 facilitate interfacing to high-impedance sources such as photodiode and piezoelectric sensors. The devices are based on Maxim's proprietary BiCMOS process technology and design architectures.

MAX9636 and MAX9638Designed to operate from a 2.1V to 5.5V supply, the MAX9636-MAX9638 are ideal for sensor interfaces in portable medical applications that demand low noise and low quiescent current. They extend battery life with a quiescent current of 36?A (typ). An optimized ratio of gain bandwidth to supply current allows the devices to support 1.5MHz bandwidth. The MAX9636 and MAX9638 also offer a low-power shutdown mode that reduces supply current to 1?A.

The MAX9636-MAX9638 are fully specified for operation over the -40C to +125C automotive temperature range. The MAX9636 is packaged in a lead-free, 2mm x 2.2mm, 6-pin SC70; the MAX9637 in a lead-free, 2mm x 2.2mm, 8-pin SC70; and the MAX9638 in a lead-free, 1.4mm x 1.8mm, 10-pin UTQFN package.

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