**ADG733BRQZ: A 5 Ω CMOS Low Voltage 4-Channel Multiplexer**

In the realm of analog signal routing and switching, precision, low on-resistance, and minimal power consumption are paramount. The **ADG733BRQZ** from Analog Devices stands as a quintessential solution, engineered to meet the rigorous demands of modern portable, battery-operated, and space-constrained applications. This integrated circuit is a **monolithic CMOS device** containing four independent single-pole/single-throw (SPST) switches, configured as a 4-channel multiplexer (mux). Its core function is to seamlessly route one of four analog or digital input signals to a common output, based on the digital address applied to its control pins.

A defining characteristic of the ADG733BRQZ is its remarkably **low on-resistance (RON) of just 5 Ω**. This feature is critical as it minimizes signal attenuation and distortion when the switch is closed, ensuring the integrity of the passed signal—whether it's a high-fidelity audio waveform or a sensitive sensor measurement. The low RON remains exceptionally flat across the analog input range, which is crucial for maintaining linearity and low distortion in precision measurement systems.

Designed for **low-voltage operation**, the device is optimized for supplies from **1.8 V to 5.5 V**. This broad range makes it exceptionally versatile, compatible with a vast array of modern logic families and microcontrollers (3.3 V and 5 V systems) as well as deeply embedded, battery-powered devices operating at lower voltages. The ADG733BRQZ itself consumes very little power, making it an ideal candidate for power-sensitive designs.

Beyond its basic switching capability, the ADG733BRQZ integrates **break-before-make switching action**. This built-in feature prevents momentary short circuits that could occur if the internal channels were to be connected simultaneously during switching, thereby protecting both the multiplexer itself and the downstream circuitry. Furthermore, it boasts **TTL- and CMOS-compatible digital inputs**, ensuring easy interfacing with standard logic without requiring additional level-shifting components.

The device is offered in a compact 16-lead TSSOP package, providing a excellent balance between board space savings and ease of assembly. Its robust architecture ensures high reliability and performance across industrial temperature ranges (-40°C to +85°C).

**ICGOOODFIND**: The ADG733BRQZ is a superior choice for designers seeking a high-performance, low-voltage multiplexer. Its combination of **ultra-low 5 Ω on-resistance**, broad supply voltage compatibility, and integrated protection features makes it an indispensable component for applications in medical instrumentation, audio and video switching, automated test equipment (ATE), and data acquisition systems.

**Keywords**:

* **Low On-Resistance**

* **CMOS Multiplexer**

* **Low-Voltage Operation**

* **Break-Before-Make**

* **Signal Integrity**