Analog Devices Inc. ADG1407BRUZ

Summary of the ADG1407BRUZ Multiplexer

The ADG1407BRUZ from Analog Devices Inc. is a member of the iCMOS analog switching family, specifically engineered for high-voltage, low-distortion applications. Engineered as a dual 8:1 multiplexer, the device integrates two independent analog multiplexers on a single chip, offering both single-ended and differential input capability. Housed in a compact 28-lead TSSOP package, the ADG1407BRUZ efficiently serves high-density circuit boards in space-sensitive applications, such as automatic test equipment, measurement systems, and medical instrumentation where signal integrity is paramount.

Operating Principles and Block Diagram of the ADG1407BRUZ

At its core, the ADG1407BRUZ is built on Analog Devices’ robust industrial CMOS (iCMOS) technology, merging high-voltage CMOS and bipolar capabilities. The device supports both single-supply (5V to 16.5V) and dual-supply (±4.5V to ±16.5V) operation, broadening compatibility with a variety of analog systems. Each of the two multiplexers features eight input channels, selectable via a three-bit binary address, and includes an enable (EN) pin for straightforward channel activation and deactivation. When the device is disabled, all channels are securely switched off, and during operation, channels are bidirectional, supporting a signal range extending to the full supply rails.

Of note is the break-before-make switching logic, which prevents channel overlap during switching and thereby mitigates signal disruption—an essential consideration for precision measurement and data acquisition tasks.

Main Electrical Specifications of the ADG1407BRUZ

The ADG1407BRUZ stands out for its consistent ultralow on-resistance, specified at a maximum of 11.5Ω (typical 9.5Ω) at ±15V supplies, and a tight channel-to-channel matching (ΔRon) of 0.55Ω. These characteristics ensure minimal signal attenuation and maintain uniform signal paths, crucial for applications demanding accurate analog performance.

The analog signal range matches the supply rails, and, with leakage currents as low as 0.01nA typ, the device helps to reduce signal drift and preserve system accuracy, even at high temperatures (up to +125°C). Break-before-make transition times as short as 105ns (typical) enable fast and seamless channel selection, while digital input thresholds are compatible with standard 3V and 5V logic, aiding ease of integration with common microcontrollers or FPGAs.

ADG1407BRUZ Performance Analysis in Technical Applications

In practical engineering scenarios, the ADG1407BRUZ boasts a –3dB bandwidth up to 110MHz at ±15V supplies, facilitating the routing of high-frequency analog and mixed signals. Its low charge injection (10pC typ), low on-resistance flatness, and minimal total harmonic distortion (as low as 0.07%) collectively ensure that both DC and AC performance are maintained for high-precision instrumentation.

Channel isolation (–73dB typ) and crosstalk performance (–70dB typ at 1MHz) further minimize interference, making the ADG1407BRUZ suitable for audio/video switching, sample-and-hold systems, and communications equipment where cross-channel integrity must be preserved.

Power Consumption and Heat Management of the ADG1407BRUZ

Designed for efficiency, the ADG1407BRUZ features an exceptionally low quiescent current (2nA typ), directly translating to reduced power consumption in always-on or battery-powered designs. Maximum static supply currents do not exceed 1μA, even at temperature extremes, assuring predictable behavior throughout an application's lifecycle.

Thermally, the ADG1407BRUZ is built to withstand rigorous industrial environments, with an operational temperature range of –40°C to +125°C. The package presents a thermal resistance of 97.9°C/W (junction to ambient) for the 28-TSSOP, supporting thermal management even in densely populated layouts.

ADG1407BRUZ Packaging Details and Installation Instructions

The ADG1407BRUZ is supplied in a 28-lead plastic thin-shrink small outline package (TSSOP) with a width of 4.40mm, designed for surface mount technology (SMT). This package selection supports automated assembly and soldering processes required by high-volume electronics manufacturing. The ruggedized lead frame and moisture sensitivity rating (MSL 1) further facilitate straightforward board handling and storage. Layout recommendations for analog signal routing remain typical—short traces, adequate grounding, and isolation from digital noise are recommended to exploit the full analog performance offered by the component.

Environmental Adherence and Reliability Ratings of the ADG1407BRUZ

The ADG1407BRUZ aligns with modern compliance and quality expectations, being RoHS3-compliant and REACH unaffected, ensuring safe use within restrictive environmental jurisdictions. With an MSL rating of 1 (unlimited floor life), logistics and inventory strategies are unburdened by special storage or handling requirements. The device’s industrial temperature range and robust electrostatic discharge (ESD) protection reinforce its suitability for deployment in demanding or mobile environments.

Alternative and Substitute Options for the ADG1407BRUZ

During the product selection process, engineers may consider other Analog Devices multiplexers from the same or similar families, depending on end-application requirements:

ADG1406: Offers higher channel count (16:1 single-ended configuration) within the same iCMOS technology and similar electrical performance, ideal when more switch channels are required.

ADG1207: Presents even lower leakage and charge injection, enhancing performance in ultra-high accuracy systems.

Industry alternatives from other manufacturers may offer similar pinouts or channel configurations but should be evaluated for supply voltage compatibility, on-resistance, leakage, and signal range to ensure a successful drop-in replacement.

Conclusion

For engineers seeking a high-voltage capable, low-leakage analog multiplexer with robust channel isolation and minimal signal distortion, the ADG1407BRUZ from Analog Devices Inc. presents a compelling solution. Its flexible supply compatibility, high analog bandwidth, and rugged industrial design make it well suited for measurement, routing, and acquisition systems where signal integrity and low power consumption are of paramount importance. By considering the performance profile, package characteristics, and appropriate equivalents, design and procurement teams can confidently specify the ADG1407BRUZ in new and legacy analog designs alike.