I have a question about the ADG1419.
I will use the power supply of the ADG1419 by the following settings.
Vcc = +5V
VSS = -15V
Is the power supply setting possible?
Yes this is possible.
The dual supply operating range of this part is from +-4.5 V to +-16.5 V and the part will be operational with asymmetrical supplies.
I've tried two set up
Mesured power consumption Idd -> around 50uA
Measured power consumption Idd -> around 1uA
Signal was good (1Vpp 10Hz wave) also in a DC offset configuration of -4V
Does it make sense?
The Idd measurements you are seeing are normal.
For an explanation let me refer you to the following article.
How do CMOS switch logic control voltage levels affect Idd?
If this is an issue for you, you could consider the ADG5419. The ADG5419 has an internal VL generator that is used to power the input buffer at a lower voltage so you can use a lower digital logic voltage without significantly impacting IDD.
Thank you David for the 2 fast reply
I've to use it in the in configuration B).
I'm going to check also ADG5419
Configuration B should be good from an Idd perspective. The Idd starts to creep up when there is a large difference between Vdd and Vin .