ADI's ADG5401F is a single-pole/single-throw (SPST) low on-resistance switch that features overvoltage protection, power-off protection, and overvoltage detection on the source pin. The ADG5401F also features a protected feedback channel for use with digital to analog converter or amplifier outputs.

When no power supplies are present, the switch remains in the off condition, and the switch inputs are high impedance. When powered, if the analog input signal levels on the S pin exceed V_DD or V_SS by a threshold voltage (V_T), the switch turns off, the normally high fault flag (FF) pin drops to a logic low, and a high resistance path between D and DFB is switched on to prevent an open-loop condition on an amplifier output. Input signal levels up to +60 V or -60 V relative to ground are blocked in both the powered and unpowered condition. The selectable POC function allows the protected switch terminal, S, to be driven to GND to prevent glitches on the output. The switch turns on with a Logic 1 input and conducts equally well in both directions. The digital input is compatible with 1.8 V logic inputs over the full operating supply range.