Analog Devices AD1981 is a sound chip but Intel 82801DB ICH4 is not. Lots of motherboard and pc makers used the Analog Devices AD1981 sound chip in building their boards.... each requiring a unique driver. Without you saying what computer and/or motherboard it came installed in, there's not much way we can help.
Your in the same boat as this member who also failed to say what it came installed in:
And this member did identify his computer/motherboard but whether the same driver will work on your machine is undetermined: