In the datasheet Figure 7
ADG441/ADG442/ADG444 (Rev. B) (analog.com)
Leakage current is almost proportional to VS(VD).
The X axis is the voltage level of VS(VD), not VS-VD or VD-VS, right?
Does this almost proportional relation between leakage current and VS(VD) applies to all analog mux switches? Since some devices doesn't have such figure, for example, ADG1208.
Hi howardaaa,
See below for actors that leads to increase in leakage currents-
With increasing temperature as well as the analogue input signal voltage applied to the switch approaches the supply voltage, leakage current will increase.
Shown in the ADG444 datasheet is leakage current vs signal voltage
ADG444
ADG1208: shows leakage current vs temperature
Regards,
edo
Hi howardaaa,
If it is for design consideration, you can look into the specification table. Normally, you will find the maximum value for leakage. This could help in assessing the maximum error that the switch could cause due to leakage.
Regards,
Yoworex
