CN0548 Measurement Module

ADI's EVAL-CN0548-ARDZ is a complete, isolated current and voltage measurement system for industrial, telecommunications, instrumentation, and automated test equipment (ATE) applications. The system is galvanically isolated and will tolerate up to ±250 V between the host controller and measurement grounds. The isolation design includes both digital data and power domain signals; no additional power source is required from the circuit being measured.

The current input range is ±10 A and the voltage input range is selectable from 16 V to 80 V, with several ranges between these values. Both voltage and current inputs feature 16-bit resolution with adjustable output data rate and signal bandwidth, including modes that reject both 50 Hz and 60 Hz line noise.

The circuit is compatible with Arduino form-factor platform boards and supports logic voltages from 1.8 V to 5 V. When paired with the open-source firmware example, the application software can easily communicate with the reference design over the Linux Industrial Input/Output (IIO) framework using the libiio library, which includes bindings for C, C#, MATLAB, Python, and LabVIEW.

Features

• Absolute maximum input rating of 80 V, 14 A
• Configurable voltage and current setting
• 16-bit ADC resolution with adjustable output data rate
• Serial peripheral interface (SPI) digital output
• Galvanic isolation from host controller
• 3.3 V and 5 V compatible
• Arduino form factor
• Chip Select (CS) remappable (can be stacked with other shields)

Block Diagram (Click to Enlarge)