MAX4522CSE+

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The MAX4522CSE+ is an analog switch part of the Interface—Analog Switches, Multiplexers, Demultiplexers category. It is a general-purpose single SPST switch that is suitable for a wide range of low-frequency applications — from 1 kHz to 1 MHz — in which input voltage range needs to be switched to one or more outputs. This device features low charge injection and low OFF leakage, making it ideal for battery powered and other systems that demand low-noise performance.

The MAX4522CSE+ provides a single SPST switch rated for up to 2V, with 2.2MΩ impedance at 100kHz. It is designed to be driven by a low-power logic signal, making it very easily integrated into a circuit. The MAX4522CSE+ has an open drain output, which allows it to be used with higher voltage outputs without the need for additional components.

The device is fabricated using Maxim’s proprietary BiCMOS process. This process combines IIIV materials with CMOS insulating layers to create a switch that is capable of switching signals in the range of 1kHz–1MHz with low charge injection and low OFF leakage. The lower charge injection and OFF leakage reduce the need for external components for coupling and isolation.

The MAX4522CSE+ includes a latching mechanism that can be used to memorize and store the state of the switch. This is useful in applications that require a change in the switching state upon power-up or reset. The device also includes an integrated voltage reference that can be used to set the switching voltage to a specific level.

The MAX4522CSE+ is available in a 4-pin SOT-23 package, allowing it to be easily integrated into a wide range of applications. Its low power and low voltage operation allows it to be used in battery powered, low-noise, and sensitive applications.

Overall, the MAX4522CSE+ provides an economical SPST switch for low-frequency analog signals. Its low charge injection and low OFF leakage ensures minimal noise and interference, while its ability to store the switch state makes it ideal for applications requiring frequent state changes.

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