Analog Switch ADG5434

Hi,

What is the issue you are having? Can you please provide as much information as you can so that we can understand the issue.

Regards,

Stephen

Hi,

What is the issue you are having? Can you please provide as much information as you can so that we can understand the issue.

Regards,

Stephen

Actually we are using a negative feedback amplifier. In the feedback loop we have use the analog switch in parallel with a higher value resistance. When we are feeding the input the amplifier then gain is not achieved as desired and we think that the switch is not working as it should. We have used the switch in normally connected condition and when the input is fed to the amplifier the the switch goes to NO condition such that the gain of the amplifier becomes high.

Please let me know if you still have any doubt regarding the schematic.

Just to be sure I am understanding this correctly, the switch is unexpectedly turning off when you do not expect it to? If that is the case, what is the logic signal that is present on the logic input of the device when this happens?

Well, i was also in the same doubt but when i checked the signal at the logic input, it remains high. Btw, i am feeding a pulsating signaling at the logic input @10 pulses per second.