Apologies for the delayed response here,
I think you are on the correct track here with the ADG1409. the first thing to think about when selecting a switch is the Supply voltage and the voltage you wish to pass.
If you are using a +/-15 V supply…
Are there some parameters I can change in the models for the ADG408/ADG409 parts to match how an ADG1408/ADG1409 would operate?
I have both spice models downloaded: AGD408/ADG409
I would like to simulate ADG1408/ADG1409
If power supply is not present in ADG1409 and a +12V signal are present in any analog input, can this situation damage the mux?
The output resistance of the AD620 is typically very low because of the feedback of the output amplifier, but there is a short-circuit current limit at +/-18mA. The AD620 is specified with a 2k load, and the linear output current is about…
Thank you for your answer, I have already found the error, it was in the microcontroller's code. ADG1409 is really much more suitable for this application, but it is only a prototype, in final version of the device all chanels would be involved.
It was my fault. I have soldered a ADG409 which impedance is 100 Ohms.
Now the drop voltage with ADG1409 is 0.2V only.
Sorry and thanks.
The ADG759 cannot be used as the voltages used may damage the part.
As an alternative would the ADG1409 (which is specified at +/-5.5V) or the ADG1609 (which is specified at +/-5.5V and 3.3V, but can be operated at +/-3.3V) be of use? The…