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Precision op amps customised for industrial applications

Posted: 24 Nov 2010     Print Version  Bookmark and Share

Keywords:Precision op amps  high-voltage amplifiers  data-acquisition applications 

Maxim Integrated Products offers the MAX9632/MAX9633 high-voltage precision operational amplifiers that offer high-voltage performance, precision specifications at low frequency, and high gains, enabling precise signal conditioning in industrial applications. The MAX9632/MAX9633 target industrial data-acquisition applications that require precision signal conditioning at low frequencies.

The two are based on the proprietary high-speed complementary BiCMOS process (CB5HV) which is optimised for AC dynamic performance, ultra-low noise, wide operating voltage range, and low-drift signal conditioning.

The MAX9632 is a single op amp with an ultra-low input-voltage noise density of 0.94nV/, 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/, 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 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) and 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 Rs.151.43 ($3.39) for the MAX9632 and Rs.106.76 ($2.39) for the MAX9633 (1000-up, FOB USA).

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