**ADG5401BRMZ: A High-Performance, 4-Channel 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 array of applications, from automated test equipment (ATE) and data acquisition systems to medical instrumentation and industrial control. The **ADG5401BRMZ from Analog Devices** stands out as a premier solution, engineered to meet the stringent demands of precision signal switching with exceptional performance and reliability.

This integrated circuit is a **monolithic, complementary metal-oxide-semiconductor (CMOS) device** containing four independently selectable single-pole/single-throw (SPST) switches. Housed in a compact 10-lead MSOP package, the ADG5401BRMZ is designed for space-constrained applications without compromising on functionality. A key feature of this multiplexer is its **break-before-make switching action**, which prevents momentary shorting between channels during the switching process, thereby safeguarding delicate downstream components.

The performance metrics of the ADG5401BRMZ are truly impressive, making it a cornerstone for high-accuracy designs. It boasts an **ultra-low on-resistance (Ron) of just 2.5 Ω**, which remains exceptionally flat across the entire analog input range. This low and consistent Ron is paramount as it minimizes signal attenuation and distortion, ensuring that the integrity of even the smallest signals is preserved. Furthermore, it exhibits **negligible charge injection and ultra-low leakage currents**, which are critical factors in maintaining signal fidelity and measurement accuracy, especially in high-impedance circuits and sample-and-hold applications.

The device operates over a wide **dual-supply range of ±5 V to ±22 V or a single-supply range of 8 V to 44 V**, offering designers tremendous flexibility in system power architecture. This wide supply range allows it to handle bipolar analog signals with ease. Digital interfacing is simplified with **TTL/CMOS compatible logic inputs**, ensuring seamless communication with modern microcontrollers, FPGAs, and digital signal processors (DSPs). The robust design also includes **latch-up immunity**, a vital feature for operation in harsh industrial environments.

Typical applications that benefit from the ADG5401BRMZ's capabilities include:

* **Precision Data Acquisition Systems:** Routing sensor inputs to a high-resolution ADC.

* **Automated Test Equipment (ATE):** Multiplexing multiple test points to measurement instruments.

* **Audio and Video Signal Routing:** Switching between high-fidelity analog sources.

* **Communication Systems:** directing signals in transmit/receive modules.

* **Battery-Powered Instruments:** Its low power consumption extends operational life.

**ICGOOODFIND**: The ADG5401BRMZ is an exemplary choice for engineers who will not compromise on signal integrity. Its combination of **ultra-low on-resistance, high channel-to-channel isolation, and robust, flexible operation** establishes it as a superior 4-channel multiplexer for the most demanding precision signal routing challenges.

**Keywords**: Analog Multiplexer, Low On-Resistance, Precision Signal Routing, CMOS Switches, High Channel Isolation.