This inventor holds 2 USPTO granted patents. Top assignee: Analog Devices,inc.. Active years: 1989.
Company Filing History:
Years Active: 1989
Title: The Innovative Contributions of John W. Fernandes in A/D Converter Technology
Introduction
John W. Fernandes, an accomplished inventor based in Beverly, MA, has made significant contributions to the field of analog-to-digital (A/D) converters. With a total of two patents registered, Fernandes is recognized for his innovative designs that enhance the performance and accuracy of A/D conversion systems.
Latest Patents
Fernandes' recent patents include:
1. **Sub-ranging A/D Converter with Flash Converter Having Balanced Input**
This 12-bit sub-ranging A/D converter operates through four successive sub-ranging cycles with an 8:1 gain change between the cycles. The residue signal for each cycle directs to a four-bit flash converter, which sets the latches for corresponding bit-current sources of a Digital-to-Analog Converter (DAC). The design incorporates identical residue and reference amplifiers to optimize the performance of the flash converter comparators. The architecture allows for a 14-bit output or increases the yield of 12-bit converters through an optional fifth cycle.
2. **Sub-ranging A/D Converter with Improved Error Correction**
Similar to his previous patent, this 12-bit A/D converter operates through four sub-ranging cycles. It features enhanced error correction methods to ensure precise output. The structure allows for the maintenance of bits already determined in previous cycles by using an overlap bit, ensuring the accuracy of signal conversion through efficient management of bit-current sources.
Career Highlights
Throughout his career, John W. Fernandes has worked at notable organizations, including Analog Devices, Incorporated and Analog Devices, Inc. His experience in these companies has greatly influenced his innovative approaches to A/D converter designs.
Collaborations
Fernandes has collaborated with esteemed colleagues such as Gerald A. Miller and Andrew M. Mallinson. This teamwork has facilitated the exchange of ideas and bolstered the advancements in their respective fields of technology.
Conclusion
In conclusion, John W. Fernandes has demonstrated exceptional ingenuity through his patents in A/D converter technology. His contributions not only enhance the functionality of these systems but also pave the way for future innovations in electronic devices.