ADG5249FBRUZ

ADG5248F andADG5249F is an 8:1 and dual 4:1 analog multiplexer.ADG5248FSwitch one of the eight inputs to the common output, and the ADG5249F switches one of the four differential inputs to the common differential output. When turned on, each channel conducts equally in both directions, and the input signal range extends to the supply voltage range. The main supply voltage defines the on-resistance curve, while the secondary supply voltage defines the level at which overvoltage protection is turned on.

When there is no power supply, the channel remains off and the switch input is in a high-impedance state. Under normal operating conditions, if the analog input signal level on either Sx pin exceeds the positive fault voltage (POSFV) or negative fault voltage (NEGFV) and the amplitude exceeds the threshold voltage (VT), the channel shuts down and the Sx pin changes to a high-impedance state. If the switch is selected to the On state, the drain pin will be pulled to the secondary supply voltage that is exceeded. Input signal levels of +55 V or −55 V relative to ground are blocked, with or without power.

The low capacitance and charge injection characteristics of these switches make them an ideal solution for data acquisition and sample-and-hold applications that require low switching glitches and fast settling times.

Note that throughout the data sheet, multifunction pins (such as A0/F2) are represented by the entire pin name or by a single function of the pin; For example, A0 indicates that it is only relevant for this function.

1. The source pins are protected against overvoltages up to −55 V and +55 V above the secondary rail.
2. The overvoltage protection range of the source pin is −55 V to +55 V when no power supply is present.
3. Overvoltage detection provides a digital output indicating the operating status of the switch.
4. Channel isolation prevents latch-up.
5. Optimized for low charge injection and on-capacitance.