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Precision High-Temperature Instrumentation Amplifier Guaranteed to 210°C

Tue, 03/08/2011 - 7:40am
NORWOOD, Mass. -- (BUSINESS WIRE) -- The industry’s first precision instrumentation amplifier designed and manufactured specifically for high temperature applications was unveiled today by Analog Devices, Inc. (ADI). The AD8229, 1.0-nV/Hz high-temperature instrumentation amplifier is the only low-noise instrumentation amplifier guaranteed to perform at up to 210°C in the most extreme environments, such as down-hole oil drilling, jet engines and space exploration.

Until today’s announcement, designers were forced to meet the challenges of rugged, noisy high-temperature environments with components not specifically designed for high-temperature conditions or were designed to operate at lower commercial grade temperatures. Often the repair and survival rates on systems using commercial-grade components are substandard, making them costly to maintain and operate. The AD8229 is unique because it solves some of the most difficult problems faced by engineers designing electronics for extreme hot, harsh and hostile environments to greatly improve maintenance and operation lifecycle.

The AD8229 instrumentation amplifier is best-in-class in all three performance categories for high-temperature applications, including CMRR (common mode rejection ratio), voltage offset and input noise. CMRR performance is 100 dB over the temperature range of 55° C to 210° C.

The AD8229 input voltage offset varies by only 100-nV/°C over the entire temperature range. Input noise is 1.0-nV/?Hz making the amp ideal for sensors that read faint signals, such as those used in down-hole drilling, nuclear magnetic resonance spectroscopy and gamma ray detection.

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