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ADG5404F Fault Protection and Detection, 10 Ω RON, 4-Channel Multiplexer

The ADG5404F is an analog multiplexer composed of four single channels with fault protected inputs. The ADG5404F switches one of the four inputs to a common drain, D, as determined by the 2-bit binary address lines (A0 and A1). An enable digital input, EN, is used to disable all the switches. Each channel conducts equally well in both directions when on, and each switch has an input signal range that extends to the supplies. The digital inputs are compatible with 3 V logic inputs over the full operating supply range. When no power supplies are present, the switch remains in the off condition, and the channel inputs are high impedance. Under normal operating conditions, if the analog input signal levels on any Sx pin exceed VDD or VSS by a threshold voltage, VT, the channel turns off and that Sx pin becomes high impedance. If the channel is on, the drain pin reacts according to the drain response (DR) input pin. If the DR pin is left floating or pulled high, the drain remains high impedance and floats. If the DR pin is pulled low, the drain pulls to the exceeded rail. Input signal levels up to +55 V or −55 V relative to ground are blocked, in both the powered and unpowered conditions. The low on resistance of the ADG5404F, combined with on-resistance flatness over a significant portion of the signal range, makes it an ideal solution for data acquisition and gain switching applications where excellent linearity and low distortion are critical. Note that, throughout this data sheet, the dual function pin names are referenced only by the relevant function where applicable. See the Pin Configuration and Function Descriptions for full pin names and function descriptions. Source pins are protected against voltages greater than the supply rails, up to −55 V and +55 V. Source pins are protected against voltages between −55 V and +55 V in an unpowered state. Overvoltage detection with digital output indicates operating state of switches. Trench isolation guards against latch-up. Optimized for low on resistance and on-resistance flatness. The ADG5404F can be operated from a dual supply of ±5 V up to ±22 V or a single power supply of 8 V up to 44 V.

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