Monitor Logic-Line State

This circuit constantly monitors the logic lines in a process-control application for state changes. It does so independently and interrupts the microprocessor when a change occurs.
Jan. 10, 1991
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The LT6375 unitygain difference amplifier from Linear Technology integrates precision matched resistors that precisely level shifts and buffers small difference signals while rejecting up to plusmn270 V common mode The Agrade version achieves 97 dB min CMRR 35 ppm max initial gain error 1 ppmdegC max gain drift and 2 ppm max gain nonlinearity with a common mode divide ratio of 251 The common mode divide ratio is selectable from 71 to 251 enabling the designer to select the ratio wit

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C. Shanker

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