5471C

The 5471C is a model of analog-to-digital converter (ADC) produced by Analog Devices, a leading semiconductor company. Introduced in the 1970s, it was one of the first integrated circuit ADCs to achieve high performance in terms of resolution and speed. The 5471C is notable for its 12-bit resolution, which was a significant advancement at the time, allowing it to convert analog signals into digital form with high precision.

This ADC operates using a successive approximation register (SAR) architecture, which remains a common method for medium-resolution converters today. The 5471C was designed for applications requiring high accuracy, such as industrial control systems, data acquisition, and instrumentation. Its compact integrated circuit form factor made it more accessible than earlier discrete-component solutions, contributing to its widespread adoption in early digital signal processing systems.

The 5471C features a conversion time of approximately 10 microseconds, which was relatively fast for its era, enabling real-time data processing in many applications. It operates with a single 5-volt supply and includes internal reference circuitry, simplifying its integration into larger systems. While modern ADCs have far greater resolution and speed, the 5471C remains a historical benchmark in the evolution of analog-to-digital conversion technology.

Today, the 5471C is primarily of historical interest, though its design principles continue to influence modern ADC development. It exemplifies the advancements in microelectronics during the late 20th century, bridging the gap between analog and digital signal processing. Collectors and engineers studying the history of digital electronics often reference the 5471C as a key component in early digital instrumentation.