ADG5248FBRUZ

ADG5248F and ADG5249F are 8:1 and dual-channel 4:1 analog multiplexers, respectively. ADG5248F switch one of the 8 inputs to the common output, ADG5249F switch one of the 4 differential inputs to the common differential output. When switched on, each channel conducts the same 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 starts.

When there is no power supply, the channel remains off and the switch input is in a high-resistance state. Under normal operating conditions, if the analog input signal level on either Sx pin exceeds the positive fault voltage (POSFV) or secondary fault voltage (NEGFV) and the amplitude exceeds the threshold voltage (VT), the channel is shut down and the Sx pin becomes high-impedance. If the switch is selected to on, the drain pin will be pulled to the excess auxiliary supply voltage. Input signal levels up to +55 V or −55 V are blocked relative to power supply.

These switches have low capacitance and charge injection, making them an ideal solution for data acquisition and sampling and holding applications that require low switching burrs and fast settling times.

Note that throughout the datasheet, multi-function pins (e.g., A0/F2) are represented by the entire pin name or the individual function of the pin; For example, A0 means that it is only relevant for this function.

1. 源极引脚具有过压保护功能，可以耐受高于副供电轨，达到−55 V和+55 V的电压。
2. 在未供电情况下，源极引脚的过压保护范围是−55 V至+55 V。
3. 过压检测提供数字输出，指示开关的工作状态。
4. 沟道隔离可防止闩锁。
5. 针对低电荷注入和导通电容而优化。