allanhurst:
The video showa a breakout board purchased from ebay - so you don't need to mount the chip .It provides 0..31.5dB attenuation in 64 0.5dB steps .
It requires a 3-v logic interface, so you'd either need a 3.3v arduino - eg a due , or a simple 5-3.3v conversion interface to use with a 5v arduino. This can be done with a few resistors.
Note : this device does not alter frequencies.
Allan
I search for breakout board with this component