This high-speed digital output reference design for programmable logic controllers (PLCs) illustrates low-cost, simple high-speed single-ended digital output module using standard low-side driver and backplane powered using isolated power stage. High-speed digital output modules are required for motor control and positioning applications.
Features
- Four high-speed digital outputs
- External load power
- Single-ended outputs working up to 500-kHz with 5-V field power and 100-kHz with 24-V filed power
- 210-mW power consumption from backplane isolated power stage
- Less than 100-ns transition time with 15-m cable
- 300-mW power consumption per load for 5-V supply, and 44-Ω load