**ADG726BSUZ-REEL: High-Performance, 16-Channel CMOS Analog Multiplexer for Precision Data Acquisition Systems**

The demand for high-precision data acquisition systems continues to grow across industries such as medical instrumentation, automated test equipment (ATE), and industrial process control. At the heart of these systems lies a critical component: the analog multiplexer (mux). The **ADG726BSUZ-REEL** from Analog Devices stands out as a premier solution, engineered to meet the stringent requirements of modern precision applications.

This integrated circuit is a **dual 8:1 or single 16:1 CMOS analog multiplexer**, offering exceptional flexibility in system design. Its architecture allows designers to configure it as two independent multiplexers for differential signal routing or as a single high-channel-count device, making it adaptable to a wide array of system architectures.

A paramount concern in precision systems is signal integrity. The ADG726BSUZ-REEL excels in this regard by featuring **ultra-low on-resistance (2.5 Ω typical)** and an extremely flat on-resistance curve across the entire analog input range. This minimizes errors and distortion, ensuring that the signal passed through the mux remains a true representation of the original. Furthermore, it boasts **very low charge injection (±5 pC)** and **low leakage currents (±100 pA)**, which are critical for maintaining accuracy when switching high-impedance sources or sampling onto precision analog-to-digital converter (ADC) capacitors.

The device is designed for seamless integration and robust performance. It operates from a **single 1.8 V to 5.5 V supply**, making it compatible with low-voltage microcontrollers and modern mixed-signal systems. Its **-3 dB bandwidth typically exceeds 200 MHz**, enabling the handling of high-speed signals without significant attenuation. For digital control, it utilizes a **serial peripheral interface (SPI)**, which simplifies board layout by reducing the number of necessary control lines—a significant advantage over parallel-controlled multiplexers in space-constrained applications. The serial interface also allows for daisy-chaining multiple devices, further expanding channel count without a proportional increase in GPIO usage.

Robustness is another key feature. The ADG726BSUZ-REEL offers **latch-up immunity** and is built on a proprietary sub-micron process that ensures high reliability. Its design includes **ESD protection of ±2 kV (HBM)** on the analog and digital pins, safeguarding the device and the surrounding circuitry from electrostatic discharge events during handling and operation.

In practical terms, this multiplexer is the ideal front-end for high-resolution data acquisition systems. It enables a single, high-accuracy ADC to sequentially monitor multiple sensor inputs—such as temperature, pressure, or voltage—dramatically reducing system size, cost, and power consumption compared to using a dedicated ADC per channel. Its combination of low distortion, high switching speed, and small package (32-lead LFCSP) makes it particularly valuable in portable medical devices, precision measurement tools, and communications infrastructure.

**ICGOODFIND**: The ADG726BSUZ-REEL is a superior 16-channel analog multiplexer that sets a high bar for performance in precision data acquisition. Its exceptional combination of **low on-resistance**, **minimal charge injection**, **high bandwidth**, **SPI compatibility**, and **robust construction** makes it an indispensable component for designers striving for accuracy, reliability, and integration in their systems.

**Keywords**: CMOS Analog Multiplexer, Low On-Resistance, SPI Interface, Precision Data Acquisition, Charge Injection.