Currently, I have 24 switches, ADG419, are powered by + / - 15V for VDD and VSS. 3.3V for VL. When I disconnected the -15V supply, the current on the +15V supply rapidly went up more than 1A. I had to turn off the supply to avoid damage the components. The voltage on -15V were measured around 1.14V. I think it would be a diode between -15V and Gnd but I don't see that in the data sheet. Has anyone seen this ?