**ADG5412BFBRUZ: A High-Voltage, Latch-Up Immune, Quad SPST Switch from Analog Devices**

In the realm of precision signal routing and high-voltage switching, designers constantly face the challenge of finding robust components that ensure system integrity and reliability. Addressing these needs, the **ADG5412BFBRUZ from Analog Devices** stands out as a premier solution. This quad, single-pole/single-throw (SPST) switch is engineered to deliver exceptional performance in demanding applications, from industrial automation and test equipment to communication infrastructure and medical instrumentation.

A defining characteristic of the ADG5412BFBRUZ is its **high-voltage handling capability**. The device can manage analog signals up to ±22 V, making it an ideal choice for systems that operate beyond standard supply rails. This is complemented by its low on-resistance (typically 60 Ω), which ensures minimal signal distortion and power loss, preserving the integrity of critical signals passing through the switch.

Perhaps one of its most critical features is its **latch-up immunity**. Built on Analog Devices' proprietary iCMOS® (industrial CMOS) process technology, the switch is inherently immune to latch-up, a common failure mechanism in CMOS devices where a parasitic SCR structure gets triggered, leading to a short circuit and potential catastrophic device failure. This robustness is further enhanced by its ability to withstand overvoltage faults. **The ADG5412BFBRUZ can tolerate signal voltages up to -55 V and +55 V, even when the supply pins are floating or grounded**, a feature that provides an invaluable layer of protection in harsh electrical environments where fault conditions are possible.

Functionally, the device integrates four independent SPST switches, offering design flexibility for multiplexing or signal gating applications. It features **break-before-make switching action**, preventing momentary shorting between channels during switching transitions. The logic inputs are compatible with both TTL and CMOS levels, simplifying interface with modern controllers and processors.

The combination of high-voltage performance, fault protection, and integration makes the ADG5412BFBRUZ a superior choice for enhancing system reliability. It eliminates the need for external protection circuits in many cases, thereby saving board space and reducing overall design complexity and cost.

**ICGOODFIND:** The ADG5412BFBRUZ is a robust, high-performance quad SPST switch that provides designers with a reliable and fault-tolerant solution for high-voltage signal routing. Its **latch-up immunity and superior overvoltage protection** make it indispensable for mission-critical systems operating in challenging conditions.

**Keywords:** High-Voltage Switching, Latch-Up Immune, Quad SPST Switch, Overvoltage Protection, iCMOS Technology.