Chieh-Yu Hsieh

Title: Innovations of Chieh-Yu Hsieh: A Pioneer in Analog-to-Digital Conversion

Introduction

Chieh-Yu Hsieh is a notable inventor based in Irvine, California, recognized for his contributions to the field of analog-to-digital conversion. With a total of six patents to his name, Hsieh has made significant advancements that enhance the performance and efficiency of electronic devices.

Latest Patents

Among his latest patents is an innovative analog-to-digital converter that features time-constant tuning with a pulse-width-based reference current and resistance searching. This sigma-delta analog-to-digital converter includes an initial continuous-time integration stage with a variable input resistor and an integration capacitor. Additionally, a switched-capacitor circuit is employed to charge and discharge a replica capacitor to a reference voltage, generating a bias current. A SAR-based tuning circuit is also integrated, which includes a variable tuning resistor that produces a tuning voltage while conducting a mirrored version of the bias current. The resistance of the variable input resistor is adjusted in response to a tuning code from the SAR-based tuning circuit.

Another significant patent is the flash-successive approximation register (SAR) hybrid analog-to-digital converter (ADC). This circuit is designed for analog-to-digital conversion and includes a flash ADC with multiple comparators. Each comparator is configured to compare an input voltage to a reference voltage. A calibration circuit is coupled to the flash ADC, which tunes the reference voltage prior to the conversion operation.

Career Highlights

Chieh-Yu Hsieh has worked with prominent companies in the technology sector, including Qualcomm Incorporated and Marvell International Limited. His experience in these organizations has contributed to his expertise in developing cutting-edge technologies in the field of electronics.

Collaborations

Throughout his career, Hsieh has collaborated with talented individuals such as Dinesh Jagannath Alladi and Yan Wang. These collaborations have fostered innovation and have led to the successful development of advanced technologies.

Conclusion

Chieh-Yu Hsieh's contributions to analog-to-digital conversion technology have established him as a leading inventor in his field. His innovative patents and collaborations with industry professionals highlight his commitment to advancing electronic technology.