ADG1438BRUZ (ANALOG DEVICES)

The ADG1438 series CMOS Analog Matrix Switch with a serially controlled 3-wire interface. The 8-channel matrix switch use a versatile 3-wire serial interface that operates at clock rates of up to 50MHz and is compatible with standard SPI, QSPI™, MICROWIRE™ and DSP interface standards. The output of the shift register, SDO, enables a number of the ADG1438 devices to be daisy-chained. On power-up, the internal shift register contains all zeros and all switches are in the off state. Each switch conducts equally well in both directions when on, making these devices suitable for both multiplexing and demultiplexing applications. All channels exhibit break-before-make switching action, preventing momentary shorting when switching channels. The ultralow on-resistance and on-resistance flatness of these switches make them ideal solutions for data acquisition and gain switching applications where low distortion is critical.