ADG794BRQZ: A 5 Ω CMOS 4:1 Multiplexer/Demultiplexer for Precision Signal Routing

Release date:2025-09-12 Number of clicks:110

**ADG794BRQZ: A 5 Ω CMOS 4:1 Multiplexer/Demultiplexer for Precision Signal Routing**

In the realm of high-performance electronic systems, the integrity of signal routing is paramount. The **ADG794BRQZ** from Analog Devices stands out as a critical component engineered to address this need, offering exceptional performance as a **4:1 multiplexer/demultiplexer switch**. Fabricated on an advanced CMOS process, this device is specifically designed for applications requiring minimal signal distortion and maximum fidelity.

The defining characteristic of the ADG794BRQZ is its remarkably low **on-resistance (Ron) of just 5 Ω**. This feature is crucial as it minimizes the voltage drop and power loss across the switch, ensuring that the signal strength is preserved from input to output. The flatness of this on-resistance across the entire analog input range is equally important, guaranteeing consistent performance and linearity regardless of the signal amplitude. Furthermore, the device boasts an ultra-low **charge injection**, a key parameter that prevents transient voltage spikes when the switch is toggled. This is vital for maintaining the accuracy of precision sampling systems and data acquisition channels.

Functioning bidirectionally, the ADG794BRQZ can seamlessly operate as either a 4:1 multiplexer or a 1:4 demultiplexer, providing exceptional design flexibility. Its architecture ensures **break-before-make switching**, eliminating any momentary shorting between channels during transition and thus protecting sensitive downstream components. The digital control logic is simple, requiring only two binary address lines (A0, A1) and an enable pin to select the desired channel, making it straightforward to interface with modern microcontrollers and FPGAs.

The combination of low on-resistance, low power consumption, and high switching speed makes the ADG794BRQZ an ideal solution for a wide array of demanding applications. It is exceptionally well-suited for **precision data acquisition systems**, audio and video signal routing, automated test equipment (ATE), and communication infrastructure where signal integrity cannot be compromised.

**ICGOOODFIND**: The ADG794BRQZ establishes a high benchmark for analog switches, merging ultra-low 5 Ω on-resistance with minimal distortion characteristics. It is an indispensable component for system designers who prioritize precision, reliability, and flawless signal routing in their advanced electronic designs.

**Keywords**: Low On-Resistance, CMOS Multiplexer, Precision Signal Routing, Charge Injection, Break-Before-Make Switching.

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