Composed of INA126 differential voltage to current conversion circuit

Published:2014/5/19 20:48:00 Author:lynne | Keyword: Composed of INA126 differential voltage to current conversion circuit, INA126 | From:SeekIC

Composed of INA126 differential voltage to current conversion circuit as shown: As shown by INA126 differential voltage to current conversion circuit. INA126 output by R1 and A1 constitute a current source, because of high input impedance, bias current remote operational amplifiers, compared with the output to the load current can be neglected, so the output current Io can be regarded as a constant, only related to the input voltage and R1. Io = (VIN/R1) x G. See table A1 selection and IB error. Figure in the dotted line connected to INA2126 encapsulation (16 feet) Sensn end connected to the Vo output end, used to detect the output voltage changes. Current source output current Io has nothing to do with the load within a certain scope, only depends on the input voltage and resistor R1, when R1 is fixed, the output current is only related to the input voltage VIN, can complete differential voltage - current transformation.



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