The ISOM8600 can be used in numerous industrial applications. For instance, ISOM8600 can be used in a digital output module in servo drive modules. Typically, these digital outputs for these modules support sink or source mode or both. The output modules are implemented for about 100mA source/sink current, and for blocking voltage up to 60V. Traditionally the digital output stages require just functional isolation. The digital output stages are implemented using discrete elements like opto-transistors for isolation, discrete transistor for increasing output source/sink current and also a bridge rectifier stage to enable source and sink capable outputs. The entire design is bulky and often requires additional power to compensate for lifetime operation. Biasing conditions with external components has to be carefully handled to provide reliable operation across use conditions. ISOM8600 is a smaller and easier alternate to the discrete implementation with the device allowing up to 150mA bidirectional source and sink capable output in ON state with up to 80V blocking voltage in OFF state. The ISOM8600 can be easily used as an 80V isolated switch when used within the Recommended Operating Conditions.

Figure 9-1 Typical Digital Output Stage With Discrete Implementation

Figure 9-2 Recommended Digital Output Stage implementation With ISOM8600