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Low-noise op amps improve signal conditioning in harsh industrial applications

Low-noise

Maxim Integrated Products introduces the MAX9632/MAX9633 36V, low-noise, precision operational amplifiers with low distortion. The first devices in Maxim’s new line of high-voltage, precision op amps, the MAX9632/MAX9633 are designed using a proprietary high-speed complementary BiCMOS process (CB5HV).

This high-voltage analog process is optimized for excellent AC dynamic performance, ultra-low noise, wide operating voltage range, and low-drift signal conditioning. The MAX9632/MAX9633 target industrial data-acquisition applications that require precision signal conditioning at low frequencies.

The MAX9632 is a single op amp with an ultra-low input-voltage noise density of 0.94nV/rt-Hz, a low offset of 125µV (max), and an offset temperature coefficient of 0.5µV/˚C (max). The MAX9633 is a dual op amp with an input-voltage noise density of 3nV/rt-Hz, an offset of 200µV (max), and an offset temperature coefficient of 0.9µV˚C (max).

Both devices provide high-fidelity signal conditioning with THD specifications better than -136dB, enabling use in professional audio equipment and high-end test and instrumentation applications. Gain-bandwidth product (GBWP) is typically 55MHz for the MAX9632 and 27MHz for the MAX9633. This usable bandwidth, combined with a generous 4.5V to 36V operating voltage range and a typical current consumption of 3.9mA (MAX9632), allows the devices to be used in an array of high-performance industrial applications. Both devices offer a new level of robustness, with up to ±8kV Human Body Model ESD rating (MAX9632).

The MAX9632/MAX9633 are fully specified for operation over the -40°C to +125°C automotive temperature range. The products are available in a small (3mm x 3mm), lead-free, 8-pin TDFN package and an 8-pin SO package (MAX9632 only). Prices start at $3.10 for the MAX9632 and $2.39 for the MAX9633 (1000-up, FOB USA).

MAXIM
 

2010111611 / 26.11.2010 / Components / Maxim Integrated


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