Using 0-20mA Devices with Galil Analog Inputs

Learn three methods for connecting 0-20mA current output devices to Galil controller analog inputs that expect -10V to +10V signals. This application note covers a simple resistor conversion method for basic measurements, a precision buffer amplifier circuit for improved accuracy, and an op-amp configuration that utilizes the full voltage range. Engineers will understand the trade-offs between simplicity and precision when interfacing current loop devices with motion controllers.