In the test circuit I'm building there is a 1 kHz PWM signal passing through a DG467. As far as I know, the DG467 was placed there to interrupt the signal if needed, like an electronic on/off button controlled by a logic input. However, somehow this switch is deforming the signal (turning a perfectly square wave form in something that looks more like a curved sawtooth). A couple of (rather basic) questions of this component I'm not able to figure out for sure, so that I'm not missing something:
Is this component to be considered an 'ordinary' switch that should not impact the signal besides interrupting it? Or does it somehow do more to the signal that is going through that could explain the deformation I'm seeing?
The datasheet mentions the switch can operate with a dual power supply. Why would this be needed? I mean, shouldn't it be enough to use V+ or GND on the logic input to toggle it?
This specific component states "VL Logic Supply Not Required". But for example the MAX319 has a specific VL pin to support TTL 5 V level. Why would a third voltage (next to V- and V+) be desired? I mean, if this is an ordinary switch, why would it need this third voltage?