**The ADG412BRZ-REEL7: A High-Performance, Latch-Up Immune Quad SPST CMOS Switch**

In the realm of analog signal routing and switching, precision, reliability, and robustness are paramount. The **ADG412BRZ-REEL7** stands out as a premier solution, engineered to meet the stringent demands of modern industrial, communication, and test and measurement systems. This device is a **quad, single-pole/single-throw (SPST) switch** fabricated on an advanced **CMOS process**, which delivers exceptional performance while **virtually eliminating the threat of latch-up**—a common failure mode in conventional CMOS devices.

A cornerstone of the ADG412BRZ-REEL7's design is its **latch-up immunity**. Latch-up, a destructive high-current state triggered by voltage spikes or excursions beyond the supply rails, can render a circuit inoperable. Traditional CMOS switches are particularly susceptible. However, the ADG412BRZ-REEL7 incorporates innovative design techniques that **prevent latch-up even when the input signals exceed the power supplies by up to VSS - 0.3V to VDD + 0.3V**. This feature is invaluable in harsh electrical environments where signal integrity is critical and system downtime is not an option.

Beyond its ruggedness, the device excels in electrical performance. It features **very low on-resistance (typically 35Ω)** and an exceptionally flat on-resistance profile across the analog input range, ensuring minimal signal distortion and power loss. The **on-resistance matching between channels is equally impressive**, guaranteeing consistent signal handling in multi-path applications. Furthermore, the switch boasts **fast switching speeds (tON typically 75ns)** and ultra-low power consumption, making it ideal for battery-powered and high-speed data acquisition systems.

The ADG412BRZ-REEL7 is designed for versatility. It operates from a single **±4.5V to ±20V bipolar supply or a +10V to +30V single supply**, offering designers flexibility in various system architectures. Each of the four independent switches can handle analog signals swinging between the supply rails, functioning equally well as a **bidirectional signal gate**. The TTL/CMOS-compatible digital inputs simplify interface with modern controllers and processors.

**ICGOO**D**FIND**: For engineers seeking a robust and high-fidelity switching solution, the ADG412BRZ-REEL7 is an outstanding choice. Its unique combination of **latch-up immunity**, low on-resistance, fast switching, and wide supply range makes it a superior component for ensuring signal path integrity and system reliability in challenging applications.

**Keywords**: Latch-Up Immunity, Low On-Resistance, Quad SPST Switch, CMOS Process, Wide Supply Range.