RCV420在微机测控系统的检测电路中的应用

The Application of RCV420 on examine and measure circuit of computer measure control system

本文通过对微机测控系统中常用的由电阻和运放组成的Ｉ／Ｕ变换电路原理的阐述，指出了该电路的优点和缺点。为了克服这些缺点，采用了ＲＣＶ４２０精密Ｉ／Ｕ变换器。同时对该芯片的参数、性能和使用等作了较详细的介绍。

This text expatiate the elements of I/U switch circuit,which consists of the resistance and operational amplifier in common use in the Computer Measure Control System.That points out the advantage and the disadvantage about this circuit.In order to overcome the disadvantage it adopts precise I/U converter—RCV420.At the same time it introduced in detail of the parameter,capability and usage about the chip.