In my previous design, AD8220 was chosen because of the requirement of the extremely high input impedance. However, I need to modify the circuit design by adding a demultiplexer to perform a 1 to 4 switch function and ADG1209 seems suitable for my design…
I am looking for a 4:1 multiplexer for analog signals with >300 MHz bandwidth.
ADG1209 has a Ron too high.
Have you other solutions ?
不是的 AD825的六脚不能连接ADG1209的6脚 也就是DA引脚 我猜测是CMOS元件的闩锁现象
As Eleuthere mentioned, the spike you measured on the switch pin when turning the power on/off is caused by parasitic capacitances between the switch pins and the supply rails.
Considering just the IC itself, there are three main categories…
Q1. What are the key benefits of these fault protected switches?
A1. There are a number of key features on these parts