Can you explain what insertion loss and off isolation are with respect to the ADG9xx family of switches?
Off isolation is defined as the attenuation between input and output ports of the switch when the switch is off. Note, crosstalk is a measure of the isolation from channel to channel.
Insertion loss is the attenuation between input and output ports of the switch when the switch is on. The switch is generally one of the first components encountered in a receiver’s signal path, so a low insertion loss is required to ensure minimum signal loss. Low switch insertion loss is also important for systems that require a low overall noise figure. To obtain the best insertion-loss performance from the ADG9xx family of switches, one should operate the part at the maximum allowable supply voltage of 2.75 V.
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