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Definition of "Zero-Drift Amplifier" |
Zero-drift amplifier dynamically correct their offset voltage and reshape their noise density. Two commonly used types auto-zero amplifiers and choppers achieve nanovolt-level offsets and extremely low offset drifts due to time and temperature. The amplifier's 1/f noise is also seen as a dc error, so it is removed as well. Zero-drift amplifiers provide many benefits to designers, as temperature drift and 1/f noise, always nuisances in the system, are otherwise very difficult to eliminate. In addition, zero-drift amplifiers have higher open-loop gain, power-supply rejection, and common-mode rejection as compared to standard amplifiers; and their overall output error is less than that obtained by a standard precision amplifier in the same configuration. / Terminal Equipment type 2 uses an interface that complies with the ISDN user-network interface recommendations. This device can connect to and work with ISDN. |
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