James A McKenzie

Title: The Innovations of James A. McKenzie

Introduction

James A. McKenzie is a notable inventor based in Austin, Texas, recognized for his contributions to the field of electronics. With a total of six patents to his name, McKenzie has made significant advancements in analog-to-digital systems and operational amplifiers. His work has been instrumental in enhancing the functionality and accuracy of electronic devices.

Latest Patents

One of McKenzie's latest patents is the A/D Self-testing circuit. This innovation involves an A/D system equipped with a capacitive DAC, which includes a circuit designed for accurately testing the functionality of the A/D system. The circuit utilizes an accurate reference voltage associated with A/D systems, selectively coupling it to specific capacitors to generate an effective test voltage. This voltage is then used to verify the proper functioning of the A/D circuitry by comparing the resulting digital output code with the weighted analog value.

Another significant patent is the Fully Differential Operational Amplifier with D.C. Common-mode Feedback. This invention features a common-mode feedback portion that accurately sets the common-mode output voltage at a predetermined value. It employs a pair of parallel transistors to source a combined current, which is utilized to control the load devices of the operational amplifier, ensuring that the differential output voltage remains centered around the desired common-mode output voltage.

Career Highlights

James A. McKenzie has had a distinguished career at Motorola Corporation, where he has contributed to various innovative projects. His expertise in electronic systems has positioned him as a key figure in the development of advanced technologies within the company.

Collaborations

Throughout his career, McKenzie has collaborated with notable colleagues, including Joe W. Peterson and Richard W. Ulmer. These partnerships have fostered a creative environment that has led to the successful development of several patents and innovations.

Conclusion

James A. McKenzie is a prominent inventor whose work has significantly impacted the field of electronics. His patents reflect a commitment to innovation and excellence, making him a valuable asset to Motorola Corporation and the broader technological community.