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
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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