**ADG849YKSZ-REEL7: A CMOS, Low Voltage SPDT Switch for Precision Signal Routing Applications**

In the realm of modern electronic design, the accurate and reliable routing of precision analog and digital signals is a fundamental requirement across a vast array of applications, from portable medical devices to automated test equipment. The **ADG849YKSZ-REEL7**, a CMOS, single-pole/double-throw (SPDT) switch from Analog Devices, stands out as a critical component engineered to meet this exacting demand. This monolithic IC is specifically designed to provide **exceptional signal fidelity** and **ultra-low power consumption** in space-constrained, battery-operated systems.

Fabricated on an advanced CMOS process, the ADG849 operates from a single **supply voltage from 1.8 V to 5.5 V**, making it perfectly suited for low-voltage systems interfacing with modern microcontrollers and processors. Its architecture ensures a very low on-resistance (RON) of just 0.5 Ω (typical) with minimal flatness across the signal range. This remarkably low RON is crucial as it minimizes signal attenuation and distortion, preserving the integrity of the transmitted waveform. Furthermore, the switch exhibits an **on-resistance matching between channels of less than 0.05 Ω**, which is vital for maintaining accuracy in differential signal paths and precision measurement circuits.

A key attribute of the ADG849 is its **break-before-make switching action**. This feature guarantees that one channel is fully disconnected before the other is connected, preventing momentary shorting of signal sources—a critical safeguard for protecting delicate upstream circuitry. The device also offers **TTL/CMOS compatible digital inputs**, which can be driven directly from standard logic families, simplifying interface design and eliminating the need for level-shifting components.

The -REEL7 suffix denotes that the component is supplied on a 7-inch reel, optimized for high-volume, automated manufacturing processes. The device is offered in a compact SC-70 package, which is ideal for applications where board real estate is at a premium. Performance characteristics such as fast switching speeds, low leakage currents, and high off-isolation make the ADG849YKSZ-REEL7 an indispensable solution for routing signals in multiplexing systems, audio switching, battery-powered instrumentation, and data acquisition systems.

**ICGOOODFIND:** The ADG849YKSZ-REEL7 emerges as a superior solution for precision signal routing, distinguished by its **ultra-low 0.5 Ω on-resistance**, wide low-voltage operation, and miniature form factor. Its exceptional electrical characteristics and robust break-before-make functionality make it an ideal choice for designers prioritizing signal accuracy, power efficiency, and reliability in advanced electronic systems.

**Keywords:** Low On-Resistance, CMOS SPDT Switch, Precision Signal Routing, Low Voltage Operation, Break-Before-Make.