公开(公告)号：US20220082608A1

公开(公告)日：2022-03-17

申请号：US17537007

申请日：2021-11-29

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Yuguo Wang ,  Steven Loveless ,  Tathagata Chatterjee ,  Jerry Doorenbos

IPC: G01R31/26

Abstract: A system comprises a noise generator circuit and a noise envelope detector circuit. The noise generator circuit comprises a first amplifier including a single transistor pair that is operable to generate 1/f noise, an output amplifier coupled to the first amplifier and configured to generate a 1/f noise signal as a function of the 1/f noise. The noise envelope detector circuit comprises a low pass filter operable to pass low frequency signals of the 1/f noise signal as a filtered 1/f noise signal, and a second amplifier or a comparator coupled to the low pass filter and operable to output a direct current (DC) voltage signal according to an envelope of the filtered 1/f noise signal, where the DC voltage signal is a function of an envelope of the filtered 1/f noise signal.

公开(公告)号：US10236900B1

公开(公告)日：2019-03-19

申请号：US15836976

申请日：2017-12-11

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Steven John Loveless ,  Yuguo Wang ,  Tathagata Chatterjee ,  Robert Stanley Grondalski

IPC: H03K5/24 ,  H03M1/10 ,  G01R27/26 ,  H03K21/08

Abstract: An analog-to-digital converter (ADC) comprising successive approximation circuitry, a capacitive analog-to-digital converter (CDAC), and capacitor mismatch measurement circuitry. The successive approximation circuitry is configured to control conversion of an analog signal to a digital value. The CDAC is coupled to the successive approximation circuitry. The CDAC includes a plurality of capacitors. The capacitor mismatch measurement circuitry is coupled to the CDAC. The capacitor mismatch measurement circuitry includes a first oscillator circuit, a second oscillator circuit, and counter circuitry. The first oscillator circuit is configured to oscillate at a frequency determined by a capacitance of one of the capacitors. The second oscillator circuit is configured to generate a predetermined time interval. The counter circuitry is configured to count a number of cycles of oscillation of the first oscillator in the predetermined time interval.

公开(公告)号：US20220375856A1

公开(公告)日：2022-11-24

申请号：US17489910

申请日：2021-09-30

Applicant: Texas Instruments Incorporated

Inventor： Mahalingam Nandakumar ,  Yuguo Wang ,  Haowen Bu

IPC: H01L23/522 ,  H01L23/525 ,  H01L21/70 ,  H01L21/283

Abstract: A method and an electronic device that includes an isolation structure having a dielectric material on or in a semiconductor surface layer, and a passive circuit component having a metal silicide structure on a side of the isolation structure, there the metal silicide structure includes a metal silicide portion and a dielectric portion, the dielectric portion of the metal silicide structure including one of silicon nitride, silicon oxide, silicon carbide, silicon carbon nitride, and silicon oxynitride. The method includes forming a dielectric material of the isolation structure on or in the semiconductor surface layer, forming a silicon-rich dielectric layer on a side of the isolation structure, and siliciding the silicon-rich dielectric layer to form the metal silicide structure on the side of the isolation structure.

公开(公告)号：US11249130B2

公开(公告)日：2022-02-15

申请号：US15859244

申请日：2017-12-29

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Yuguo Wang ,  Steven Loveless ,  Tathagata Chatterjee ,  Jerry Doorenbos

IPC: G01R31/26

Abstract: A system comprises a noise generator circuit and a noise envelope detector circuit. The noise generator circuit comprises a first amplifier including a single transistor pair that is operable to generate 1/f noise, an output amplifier coupled to the first amplifier and configured to generate a 1/f noise signal as a function of the 1/f noise. The noise envelope detector circuit comprises a low pass filter operable to pass low frequency signals of the 1/f noise signal as a filtered 1/f noise signal, and a second amplifier or a comparator coupled to the low pass filter and operable to output a direct current (DC) voltage signal according to an envelope of the filtered 1/f noise signal, where the DC voltage signal is a function of an envelope of the filtered 1/f noise signal.

公开(公告)号：US11796588B2

公开(公告)日：2023-10-24

申请号：US17537007

申请日：2021-11-29

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Yuguo Wang ,  Steven Loveless ,  Tathagata Chatterjee ,  Jerry Doorenbos

IPC: G01R31/26

CPC classification number: G01R31/2626

Abstract: A system comprises a noise generator circuit and a noise envelope detector circuit. The noise generator circuit comprises a first amplifier including a single transistor pair that is operable to generate 1/f noise, an output amplifier coupled to the first amplifier and configured to generate a 1/f noise signal as a function of the 1/f noise. The noise envelope detector circuit comprises a low pass filter operable to pass low frequency signals of the 1/f noise signal as a filtered 1/f noise signal, and a second amplifier or a comparator coupled to the low pass filter and operable to output a direct current (DC) voltage signal according to an envelope of the filtered 1/f noise signal, where the DC voltage signal is a function of an envelope of the filtered 1/f noise signal.