Regarding ADG1419. Will it be possible to work with a VDD of 1.8V , VSS of -7V and , SA of -7V and SB at GND?
I can't figure out from the DS if its possible?
According to datasheet Specifications Table on page 6, for dual supply operations the guaranteed minimum supply voltage at Vdd/Vss is +/-4.5V.
It is not recommended to use Vdd = 1.8V, as this level might not be able to properly power-up the internal circuitry.
I would suggest to use Vdd = 4.5V as a minimum and use Vss = -7V to cater the analog input signal at SA = -7V.
With regards to SB pin, may I know the application why do you need to place SB to GND? Do you intend to not use SB input?
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