**ADG5436FBRUZ: A Comprehensive Technical Overview of Analog Devices' High-Voltage Latch-Up Immune Switch**

The **ADG5436FBRUZ** from Analog Devices represents a significant advancement in high-voltage switching technology, designed to meet the rigorous demands of industrial, instrumentation, and automotive systems. This monolithic device integrates two independently programmable, normally open (NO) single-pole/single-throw (SPST) switches, engineered to operate seamlessly in high-voltage environments up to ±55 V. Its architecture is optimized for applications requiring robust performance, minimal power consumption, and enhanced reliability.

A standout feature of the ADG5436FBRUZ is its **latch-up immunity**, a critical attribute that ensures operational stability in harsh electrical environments. Traditional CMOS switches are susceptible to latch-up—a destructive, high-current state triggered by voltage spikes or transients—which can lead to device failure. The ADG5436FBRUZ mitigates this risk through proprietary isolation technology, making it ideal for systems prone to unexpected voltage surges, such as automated test equipment (ATE), data acquisition systems, and battery management systems (BMS).

The switch operates with a **wide supply voltage range from ±9 V to ±55 V**, accommodating both dual and single-supply configurations. This flexibility allows designers to interface with high-level signals without external level-shifting circuits, simplifying board layout and reducing component count. Additionally, the device offers low on-resistance (typically 35 Ω) and flat on-resistance characteristics across the input signal range, ensuring minimal distortion and signal integrity preservation for precision analog signals.

Digital control is facilitated through a **1.8 V to 5.5 V logic interface**, compatible with modern microcontrollers and FPGAs, enabling easy integration into digital systems. The ADG5436FBRUZ also features break-before-make switching action, preventing momentary shorting during transition states. Its fail-safe design ensures that the switches remain off during power-down, protecting downstream circuitry.

Housed in a compact 16-lead TSSOP package, the device combines high integration with thermal efficiency. Operating over an extended industrial temperature range (-40°C to +125°C), it is suited for challenging environments. Furthermore, its **ESD protection of 4 kV (Human Body Model)** enhances durability during handling and operation.

ICGOODFIND: The ADG5436FBRUZ is a robust, high-voltage switch offering unparalleled latch-up immunity, wide voltage operation, and digital compatibility, making it a top choice for critical applications in industrial and automotive electronics.

**Keywords:** High-Voltage Switch, Latch-Up Immunity, Low On-Resistance, Fail-Safe Design, ESD Protection.