ADG467BRSZ

The ADG467BRSZ is an Octal-channel Protector placed in series with the signal path. The channel protector protects sensitive components from voltage transience in the signal path regardless if the power supplies are present or not. For this reason, the channel protectors are ideal for use in applications where correct power sequencing cannot always be guaranteed (for example, hot insertion rack systems) to protect analogue inputs. This is described further and some example circuits are given in the Applications Information section. Each channel protector has an independent operation and consists of an N-channel MOSFET, a P-channel MOSFET and an N-channel MOSFET, connected in series. The channel protector behaves just like a series resistor during normal operation. Circuitry and signal source protection is provided in the event of an over-voltage or power loss. The channel protectors can withstand over-voltage inputs from -40 to 40V. See the Circuit Information section.