**ADG1408YRUZ: A Comprehensive Guide to the 8-Channel Precision Analog Multiplexer**

In the world of electronic design, the ability to accurately route analog signals is paramount. The **ADG1408YRUZ** from Analog Devices stands as a critical component in this domain, representing a high-performance, **8-channel single-ended analog multiplexer**. This device is engineered to handle a wide range of precision measurement, data acquisition, and signal routing applications where signal integrity and accuracy are non-negotiable.

At its core, the ADG1408YRUZ functions as a solid-state switch, connecting one of eight independent analog input channels (S1-S8) to a common output (D) based on a 3-bit binary address (A0, A1, A2). This selection process is enabled by a single enable pin (EN). When the EN pin is set high, the addressed channel connects to the output with **extremely low on-resistance** (typically 4.5 Ω) and remarkable flatness across the entire analog signal range. This low and consistent resistance is vital as it minimizes errors and distortion in the transmitted signal, ensuring that the system's overall accuracy is maintained.

A key attribute of this multiplexer is its **wide analog signal range**, which extends from the negative supply voltage VSS to the positive supply voltage VDD. The ADG1408YRUZ supports bipolar supply operation (e.g., ±15 V) or single-supply operation (up to +22 V), offering designers significant flexibility in integrating it into various system architectures. This capability allows it to process signals that swing below ground, making it indispensable in industrial and automotive systems.

Furthermore, the device boasts **break-before-make switching action**. This essential feature ensures that the currently connected channel is fully disconnected before a new one is connected, preventing any momentary shorting between analog sources. This protects both the signal sources and the multiplexer itself from potential damage or signal corruption during channel switching.

The ADG1408YRUZ is also designed for minimal power consumption and is fabricated on an **iCMOS® (industrial CMOS) process**. This advanced manufacturing technology enables the combination of high voltage performance, low power consumption, and reduced package size. It is offered in a compact 16-lead TSSOP package, making it suitable for space-constrained applications without compromising on performance.

Typical applications for this precision multiplexer are found in:

* **Data Acquisition Systems (DAQ):** Where multiple sensor inputs need to be sequentially routed to a single high-accuracy ADC.

* **Automated Test Equipment (ATE):** For routing signals from various devices under test to measurement instrumentation.

* **Medical Instrumentation:** Such as patient monitoring systems, where reliability and signal fidelity are critical.

* **Audio and Video Signal Routing:** For switching between different sources without introducing noise or distortion.

* **Communication Infrastructure:** For managing signal paths in base stations and networking hardware.

**ICGOOODFIND:** The ADG1408YRUZ is an exemplary solution for designers seeking a robust and precise method for analog signal multiplexing. Its combination of **low on-resistance, wide voltage range, and high integration** makes it a versatile and reliable choice for demanding applications across numerous industries, ensuring signal integrity from source to destination.

**Keywords:** Analog Multiplexer, Low On-Resistance, iCMOS, Signal Integrity, Data Acquisition