**ADG714BRUZ: A Comprehensive Technical Overview of this CMOS Serial-Controlled SPST Switch**
The **ADG714BRUZ** from Analog Devices represents a highly integrated, monolithic solution for digital signal routing and switching applications. As a **single-pole, single-throw (SPST) switch** fabricated in advanced CMOS technology, it offers a compelling blend of performance, miniaturization, and ease of use for modern electronic systems. This device is engineered to provide a robust interface between digital control systems and analog signals, making it indispensable in a wide array of applications from portable instrumentation to communication infrastructure.
At its core, the ADG714BRUZ integrates **eight independent SPST switches**. Each switch is designed to handle both analog and digital signals within a specified voltage range. A key feature of this IC is its **serial peripheral interface (SPI)-compatible control logic**, which allows a microcontroller or digital processor to configure the on/off state of all eight switches using a minimal number of GPIO pins—typically just three: clock (CLK), data in (SDI), and chip select (CS). This serial control mechanism drastically reduces the interconnect complexity compared to parallel-controlled switches, saving valuable board space and simplifying system design.
The electrical performance of the ADG714BRUZ is characterized by several critical parameters. It operates from a single **2.7 V to 5.5 V power supply**, making it suitable for both 3.3 V and 5 V systems. The switches exhibit very low **on-resistance (Ron)** of just 2.5 Ω typical, with exceptional flatness across the signal range. This low and consistent resistance is vital for maintaining signal integrity and minimizing distortion in precision measurement and audio paths. Furthermore, the device boasts **ultra-low power consumption**, a direct benefit of its CMOS construction, which is crucial for battery-powered equipment.
Another significant advantage is its **latch-up immune construction**. The ADG714BRUZ is built using a proprietary silicon-on-insulator (SOI) process that eliminates the parasitic thyristors inherent in standard CMOS designs. This makes the device inherently immune to latch-up caused by overvoltage transients, greatly enhancing system reliability. The switches also feature **break-before-make switching action**, preventing momentary shorting between channels during switching transitions.
The **ADG714BRUZ is offered in a compact 24-lead TSSOP package**, ideal for space-constrained PCB layouts. Its operating temperature range of -40°C to +85°C ensures reliable performance in industrial and automotive environments. Typical applications include **sample-and-hold circuits, audio and video signal routing, automatic test equipment (ATE), and communication systems** where precise and reliable signal switching is paramount.
ICGOODFIND: The ADG714BRUZ stands out as a superior solution for serial-controlled signal switching, offering an optimal combination of low on-resistance, minimal power consumption, a space-saving serial interface, and robust latch-up immunity in a highly integrated package.
**Keywords:** CMOS Switch, SPI Interface, Low On-Resistance, Latch-Up Immune, SPST Switch.
