**ADG733BRQ: A Comprehensive Technical Overview of Analog Devices' Low-Voltage CMOS Quad SPST Switch**

In the realm of analog signal routing and system design, the precision and performance of a switch can be paramount. The **ADG733BRQ** from Analog Devices stands as a quintessential solution, representing a highly integrated, **low-voltage, CMOS quad single-pole/single-throw (SPST) switch**. This device is engineered to provide exceptional performance in a compact package, making it an ideal choice for a wide array of applications from portable instrumentation to communication systems.

**Architecture and Core Functionality**

The ADG733 integrates four independent SPST switches on a single monolithic chip. Each switch is designed to handle analog signals within the voltage range of its power supplies. Fabricated in an advanced CMOS process, the switch offers **very low power consumption** and minimizes the charge injection that can plague other switching technologies. A fundamental feature of its design is the break-before-make action, ensured by internal control logic, which prevents momentary shorting between channels during switching transitions.

**Key Electrical Characteristics and Performance**

The operational sweet spot for the ADG733 is within a **wide supply voltage range from 1.8 V to 5.5 V**, making it perfectly suited for both 3 V and 5 V systems, as well as battery-powered applications. This flexibility is a significant advantage. Furthermore, the device exhibits an **ultra-low on-resistance (Ron) of just 0.5 Ω typical** with a flatness of 0.2 Ω over the signal range. This low and linear resistance is critical as it minimizes signal distortion and power loss when the switch is on.

Complementing its low Ron is an impressive **on-resistance matching between channels of only 0.05 Ω typical**. This high degree of matching is essential for applications requiring symmetrical signal paths across multiple channels, such as in multiplexing or differential signal routing. The device also boasts a high bandwidth, exceeding 200 MHz, allowing it to pass high-frequency signals with minimal attenuation.

**Applications and System Integration**

The versatility of the ADG733BRQ allows it to be deployed in numerous critical roles. It is exceptionally well-suited for:

* **Battery-Operated Equipment:** Its low voltage operation and minimal power consumption extend battery life.

* **Audio and Video Signal Routing:** High bandwidth and low distortion preserve signal integrity.

* **Communication Systems:** Used for channel selection and signal gating.

* **Automatic Test Equipment (ATE) and Data Acquisition Systems:** Precision switching with high channel-to-channel matching ensures accurate measurements.

Housed in a compact 16-lead TSSOP (RQ) package, the ADG733 offers high functional density, saving valuable board space in modern electronic designs.

**ICGOODFIND**

The **ADG733BRQ** emerges as a superior integrated solution for precision analog switching. Its combination of **ultra-low on-resistance, minimal power consumption, wide voltage range operation, and excellent channel matching** establishes a high-performance benchmark. For design engineers seeking a reliable, high-fidelity, and space-efficient switch for low-voltage systems, the ADG733BRQ represents an optimal choice, balancing advanced technical specifications with practical application versatility.

**Keywords:** Low On-Resistance, Low-Voltage CMOS, Quad SPST Switch, Analog Signal Routing, Break-Before-Make.