Constituted by the INA118 differential voltage - current converter

Published:2014/5/21 20:31:00 Author:lynne | Keyword: Constituted by the INA118 differential voltage - current converter, INA118 | From:SeekIC

Constituted by the INA118 differential voltage - current converter circuit as shown: As shown by INA118 constitute differential voltage - current converter. INA118 current source constituted by the output of R1 and A1, due to high input impedance of the operational amplifier, the bias current is extremely small, and the output current to the load is negligible compared to, so the output current Io can be considered constant, and only the input voltage and R1 concerned that Io = (VIN/R1) × G. A1 Selection and IB error below. >The current source output current Io within a certain range regardless of the load, the input voltage and depends only on the resistors R1, when R1 is fixed, the output current and the input voltage VIN related only to complete the differential voltage - current conversion.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/A-D_D-A_Converter_Circuit/Constituted_by_the_INA118_differential_voltage___current_converter.html

Print this Page | Comments | Reading(3)