**ADG5209BRUZ: A High-Performance, 4:1 CMOS Multiplexer for Precision Signal Routing Applications**

In the realm of electronic design, the accurate routing of analog signals is a critical requirement across a wide spectrum of applications, from automated test equipment (ATE) and data acquisition systems to medical instrumentation and communication infrastructure. The **ADG5209BRUZ** from Analog Devices stands out as a premier solution, engineered to meet the stringent demands of **precision signal routing** with exceptional performance and reliability.

This integrated circuit is a **monolithic, 4:1 single-ended analog multiplexer** constructed with advanced CMOS technology. Its fundamental role is to select one of four independent analog input signals and connect it to a common output channel, a function controlled via two binary address lines (A0, A1) and an enable pin. This digital control interface allows for seamless integration with microcontrollers, FPGAs, and other logic circuits, enabling automated and dynamic signal path configuration.

The core strength of the ADG5209BRUZ lies in its electrical characteristics, which are meticulously optimized for precision. It boasts an **ultra-low on-resistance (Ron) of just 4.5 Ω**, a feature that is remarkably consistent across the entire analog input range and varies only minimally with signal voltage. This low and flat Ron is paramount as it minimizes signal attenuation and power loss, preserving the integrity of delicate analog waveforms. Furthermore, the device exhibits **exceptionally low leakage currents**, typically in the sub-nanoampere range. This is crucial for maintaining accuracy in high-impedance circuits, preventing signal drift and errors in measurement systems.

Another significant advantage is its **break-before-make switching action**. This built-in feature ensures that the existing connection is fully broken before a new one is established, effectively preventing momentary shorting between different input channels. This protects both the signal sources and the multiplexer itself from potential damage during switching transitions, enhancing system robustness.

The ADG5209BRUZ is designed to handle bipolar analog signals, operating from a wide dual supply range of ±5 V to ±22 V or a single supply from 8 V to 44 V. This flexibility makes it suitable for routing signals spanning both positive and negative voltages, a common requirement in industrial and audio applications. Its architecture also ensures **high off-isolation and very low crosstalk** between channels, which is essential for preventing unwanted interaction and noise coupling from inactive signals onto the active path.

Housed in a compact 16-lead TSSOP package, the ADG5209BRUZ offers a powerful combination of performance and space efficiency, making it an ideal choice for dense PCB layouts where board real estate is at a premium.

**ICGOOODFIND**: The ADG5209BRUZ is a superior 4:1 CMOS multiplexer that sets a high benchmark for precision analog switching. Its defining characteristics of **ultra-low on-resistance, minimal leakage current, and robust supply range** make it an indispensable component for designers who cannot compromise on signal fidelity and system accuracy in demanding routing applications.

**Keywords**: CMOS Multiplexer, Precision Signal Routing, Low On-Resistance, Low Leakage Current, Break-Before-Make Switching.