**The ADG432BRZ: A High-Performance, 4Ω On-Resistance, Single-Supply SPST Analog Switch**

In the realm of precision signal routing and system design, the performance of an analog switch is paramount. The **ADG432BRZ from Analog Devices** stands out as a superior solution, engineered to meet the demanding requirements of modern applications where signal integrity, low power consumption, and space efficiency are critical. This single-pole/single-throw (SPST) switch is designed to deliver **exceptional performance in a compact package**, making it an ideal choice for a wide array of systems from industrial instrumentation to portable medical devices.

A defining feature of the ADG432BRZ is its **extremely low on-resistance of just 4Ω**. This characteristic is crucial as it minimizes the voltage drop and signal distortion across the switch when it is in the closed (on) state. For applications involving high-precision analog signals or low-level data acquisition, such low resistance ensures that the signal fidelity is preserved from source to destination, thereby enhancing the overall accuracy of the system.

Furthermore, the device is optimized for **single-supply operation, typically from +2.7 V to +5.5 V**. This flexibility makes it exceptionally suitable for battery-powered and portable equipment where power efficiency is a key design constraint. The low power consumption inherent in its design helps in extending battery life without compromising on switching performance. Despite being a single-supply part, it also handles bipolar analog signals effectively when configured correctly, thanks to its clever internal architecture.

The **ADG432BRZ is a normally closed (NC) switch**, which provides a safe default state for many control applications. It offers a **break-before-make switching action**, a critical safety feature that prevents momentary shorting between the source and the destination during the switching transition. This is essential for protecting sensitive downstream components, such as analog-to-digital converters (ADCs) or amplifier inputs, from potentially damaging signal contention.

Housed in a space-saving **8-lead SOIC package**, the component is designed for high-density PCB layouts. Its robust construction ensures **high reliability and excellent performance across the industrial temperature range (-40°C to +85°C)**, allowing designers to deploy it in environmentally challenging applications.

In summary, the ADG432BRZ integrates low on-resistance, single-supply convenience, and a compact form factor into a highly reliable SPST switch. It provides design engineers with a powerful component to achieve precise and efficient signal management.

**ICGOODFIND:** The ADG432BRZ is a top-tier monolithic CMOS analog switch that excels in precision and efficiency. Its combination of **ultra-low 4Ω on-resistance**, single-supply voltage range, and robust packaging makes it an outstanding solution for enhancing signal path performance in space-constrained and power-sensitive designs.

**Keywords:** Low On-Resistance, Single-Supply Operation, SPST Analog Switch, Signal Integrity, Break-Before-Make.