**ADG738BRUZ-REEL: A Comprehensive Analysis of the 8-Channel Multiplexer/Demultiplexer Switch IC**

The **ADG738BRUZ-REEL** from Analog Devices represents a highly integrated solution for signal routing in a wide array of electronic systems. As a monolithic CMOS device, it contains a precise **8-channel single-ended multiplexer/demultiplexer** switch configuration, engineered to provide exceptional performance in data acquisition, communication systems, and instrumentation.

**Architecture and Core Functionality**

The fundamental architecture of the ADG738 is based on an array of eight **low-on-resistance CMOS switches**. These switches are controlled via a 3-bit binary address (A0, A1, A2) and an enable pin (EN), allowing any one of the eight independent sources (S1-S8) to be connected to a common drain (D) output. This design facilitates both multiplexing (many-to-one) and demultiplexing (one-to-many) operations with minimal signal distortion. The device operates from a **single 1.8 V to 5.5 V supply**, making it exceptionally versatile for both 3.3 V and 5 V systems, including portable, battery-powered equipment.

**Key Performance Characteristics**

A primary advantage of the ADG738 is its remarkably **low on-resistance of 2.5 Ω (typical)**, which remains flat across the entire analog input range. This characteristic is critical as it minimizes signal attenuation and distortion, ensuring the integrity of the transmitted analog signal. Furthermore, the device features **fast switching times (tON = 35 ns, tOFF = 20 ns)** and high bandwidth, enabling it to handle rapid signal switching requirements in high-speed data acquisition systems.

The ADG738 is designed with **break-before-make switching action**, a crucial safety feature that prevents momentary shorting between channels during transition. Its construction ensures very low power consumption (typically < 0.1 μW) and features **TTL and CMOS-compatible digital inputs**, simplifying interface with modern microcontrollers and digital signal processors without requiring level-shifting circuitry.

**Application Spectrum**

The versatility of this IC makes it suitable for a broad range of applications. It is ideally suited for:

* **Data Acquisition Systems (DAQ):** Routing multiple sensor inputs to a single analog-to-digital converter (ADC).

* **Communication Systems:** Signal routing and switching in transmit/receive paths.

* **Audio and Video Signal Routing:** Switching between different audio/video sources.

* **Automated Test Equipment (ATE):** Directing test signals to various device pins.

* **Battery-Powered Systems:** Its low voltage operation and minimal power consumption are ideal for handheld and portable devices.

**The "REEL" Packaging**

The "-REEL" suffix indicates that the component is supplied on a **7-inch, 13-inch diameter reel**, which is the standard packaging format for high-volume, automated surface-mount (SOIC-16 package) assembly lines. This highlights its intended use in industrial and commercial mass production.

**ICGOODFIND**: The ADG738BRUZ-REEL stands out as a superior choice for designers seeking a reliable, high-performance, and cost-effective analog switch solution. Its combination of **low on-resistance, wide voltage range, fast switching, and robust integration** makes it an indispensable component for optimizing signal path design in complex electronic systems.

**Keywords**: Analog Switch, Low On-Resistance, Multiplexer/Demultiplexer, Single Supply, CMOS.