INA131 configuration of the shield drive circuit

Published:2014/5/18 20:27:00 Author:lynne | Keyword: INA131 configuration of the shield drive circuit, INA131, OPA602 | From:SeekIC

INA131 configuration of the shield drive circuit as shown: As shown by the shield drive circuit configured INA131. Evidenced by the interference theory and practice in the cable shield weak signal transmission with a certain potential, will greatly reduce the interference between the shield and the core introduced by the distributed capacitance coupling. The circuit is based on this consideration, with the OPA602 as constituting a voltage follower drive shield generator, the input signal from the internal op-amp instrumentation amplifier, OPA602 output to shield that shields the potential to be elevated to the internal amp potential of the output amplifier, so that the interference on the cable is significantly reduced. The presence of common mode voltage shielded line is driven, the resistance of the common mode gain of about 0.1%.



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