Electrically isolating data acquisition systems
Guy Hoover and William Rempfer
Abstract
A circuit for electrically isolating data acquisition systems is described.
Keywords
Data acquisition
electrical isolation
LTC1090
Introduction
In data acquisition systems it is often necessary to electrically isolate the measurement points from the system controller. Reasons for the electrical isolation include the following: to allow floating measurements at high voltages; for safety, to reduce the danger of electrical shock, as might occur in medical applications; and to eliminate ground loops between measurement points and the system controller which can cause errors.
The data transmitted over the isolated lines can be either analog ...
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