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bipolar dc bias on ADG918 or ADG919

I was wondering what the limits for (quasi-) dc signals for the ADG918/919 switches are?

Most importantly, is it ok to apply negative dc bias?
Our application needs a switch for bipolar (±1.5V) time signals with a bandwidth of up to ~1GHz but also requires slow components (~1ms, sub-kHz).
We currently use the ADG1234, but the feedthrough/charge injection glitch during switching is too large and I was hoping for the ADG918 to be better suited.

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