The maximum power dissipation of the DG408AK is 500mW. However, it's recommended to keep the power dissipation below 300mW to ensure reliable operation.
To ensure correct switching, make sure the control voltage (VCC) is within the recommended range (2.7V to 5.5V), and the input signals are within the specified voltage range (VCC - 1.5V to VCC + 0.5V). Also, ensure the control input (S) is driven with a low-impedance source and has a rise/fall time of less than 10ns.
To minimize signal distortion and noise, use a symmetrical layout and routing for the analog signals, keep the signal traces short and away from noise sources, and use a solid ground plane. Also, decouple the power supply (VCC) with a 0.1uF capacitor to reduce noise and ensure stable operation.
Yes, the DG408AK can be used as a digital switch, but it's not recommended. The DG408AK is designed for analog signal switching, and using it as a digital switch may result in slower switching times and higher power consumption. If you need a digital switch, consider using a dedicated digital switch IC.
When the enable input (EN) is not used, it's recommended to tie it to the logic high level (VCC) to ensure the switch is always enabled. Leaving the EN input floating may cause unpredictable behavior and increased power consumption.
DG408AK datasheet
by Maxim Integrated Products
