**The ADG721BRM: A High-Performance, Low-Voltage CMOS SPST Switch from Analog Devices**

In the realm of precision signal routing and system design, the selection of a switching component is critical. The **ADG721BRM from Analog Devices** stands out as a premier solution, engineered to meet the demanding requirements of modern portable, battery-operated, and high-accuracy measurement equipment. This single-pole/single-throw (SPST) switch exemplifies the fusion of **low-voltage operation and exceptional performance** in a compact form factor.

Fabricated on an advanced CMOS process, the ADG721BRM is optimized for operation from a **+1.8 V to +5.5 V single supply**, making it an ideal choice for a vast array of applications from 3V and 5V systems to complex mixed-signal environments. This wide supply range ensures compatibility with modern microcontrollers, DSPs, and data converters. A key feature of this switch is its **break-before-make switching action**, which prevents momentary shorting between source and drain during the switching process, a crucial safeguard for protecting sensitive downstream circuitry.

Performance is where the ADG721BRM truly excels. It boasts an **extremely low on-resistance of just 1.5 Ω** (typical), which remains remarkably flat across the entire input signal range. This low and consistent resistance ensures minimal signal attenuation and distortion, preserving the integrity of both analog and digital signals passing through the switch. Furthermore, it features **ultra-low power consumption**, with a typical supply current of a mere 1 nA, virtually eliminating any concern of it being a drain on precious battery life.

The device is offered in a space-saving 8-lead MSOP package, perfect for high-density board layouts. It is designed for a broad operating temperature range (-40°C to +125°C), guaranteeing robust performance in industrial and automotive environments. Typical applications include:

* **Portable and battery-powered instruments**

* **Audio and video signal routing**

* **Communication systems**

* **Automatic test Equipment (ATE)**

* **Data acquisition systems**

**ICGOODFIND:** The Analog Devices ADG721BRM is a superior CMOS SPST switch that delivers an outstanding combination of **low on-resistance, wide voltage range operation, and minuscule power consumption**. Its break-before-make functionality and robust design make it a reliable and highly efficient solution for precision signal switching in space-constrained, power-sensitive applications.

**Keywords:** Low On-Resistance, Low-Voltage CMOS, SPST Switch, Break-Before-Make, Power Consumption.