SLLU375 September 2024 ISO1228
This evaluation module contains ISO1228 device with a configuration for evaluating Type 1 or Type 3 digital inputs. To evaluate Type 2 digital inputs, please set RILIM = 1kΩ to support 3.5mA current on each channel and then connect each Type 2 digital input to two channels of ISO1228 such that the two channels consume a combined current of 7mA meeting the current requirement of each Type 2 digital input. Such configuration with ISO1228 allows for evaluation of four Type 2 digital inputs.
The major components of the ISO1228 evaluation module are:
To demonstrate functionality of the ISO1228, TI recommends the following (not included):