Electronic Instrumentation Laboratory
Department of Microelectronics

dr. Zhong Tang

Guest
Electronic Instrumentation (EI), Department of Microelectronics

Themes: Precision Analog

Biography

Zhong Tang received the B.S. degree in Electronic and Information Engineering from Zhejiang University, Hangzhou, China, in 2015, and then the Ph.D. degree in Circuits and Systems from the same university in 2020. From 2016 to 2018, He was an intern with Semitronix Corporation, Hangzhou, China, working on CMOS temperature sensor design. From 2019 to 2020, He was a visiting Ph.D. student in EEIC group at Eindhoven University of Technology, Eindhoven, the Netherlands. He is currently a postdoc researcher in Electronic Instrumentation Lab, TU Delft. His current research interests include CMOS temperature sensors and other precision analog and mixed-signal integrated circuits.

Publications

  1. A PNP-Based Temperature Sensor With Continuous-Time Readout and ± 0.1 °C (3σ) Inaccuracy From -55 °C to 125 °C
    Toth, Nandor G.; Tang, Zhong; Someya, Teruki; Pan, Sining; Makinwa, Kofi A. A.;
    IEEE Journal of Solid-State Circuits,
    pp. 1-10, 2024. DOI: 10.1109/JSSC.2024.3402131
    Keywords: ... Temperature sensors; Resistors; Energy efficiency; Instruments; Temperature dependence; Modulation; Energy resolution;Bitstream-controlled (BSC) dynamic-element-matching (DEM);continuous-time (CT) ΔΣ-modulator; current-mode readout; PNP-based temperature sensor; resistor ratio self-calibration.

    Abstract: ... This article describes a PNP-based temperature sensor that achieves both high energy efficiency and accuracy. Two resistors convert the CTAT and PTAT voltages generated by a PNP-based front-end into two currents whose ratio is then digitized by a continuous-time (CT) ΔΣ-modulator. Chopping and dynamic-element-matching (DEM) are used to mitigate the effects of component mismatch and 1/f noise, while the spread in VBE and in the ratio of the two resistors is digitally trimmed at room temperature (RT). Fabricated in a 0.18 μm CMOS process, the sensor occupies 0.12 mm2, and draws 9.5 μA from a supply voltage ranging from 1.7 to 2.2 V. Measurements on 40 samples from one batch show that it achieves an inaccuracy of ±0.1 °C (3σ ) from −55 °C to 125 °C, and a commensurate supply sensitivity of only 0.01 °C/V. Furthermore, it achieves high energy efficiency, with a resolution Figure of Merit (FoM) of 0.85 pJ·K2.

  2. A Sub-1 V Capacitively Biased BJT-Based Temperature Sensor With an Inaccuracy of ±0.15°C (3σ) from −55°C to 125°C
    Tang, Zhong; Pan, Sining; Grubor, Miloš; Makinwa, Kofi A. A.;
    IEEE Journal of Solid-State Circuits,
    pp. 1-9, 2023. DOI: 10.1109/JSSC.2023.3308554

  3. A Bias-Flip Rectifier With Duty-Cycle-Based MPPT for Piezoelectric Energy Harvesting
    Yue, Xinling; Javvaji, Sundeep; Tang, Zhong; Makinwa, Kofi A. A.; Du, Sijun;
    IEEE Journal of Solid-State Circuits,
    pp. 1-11, 2023. DOI: 10.1109/JSSC.2023.3313733

  4. A BJT-Based Temperature Sensor with±0.1°C (3σ) Inaccuracy from -55°C to 125°C and a 0.85pJ.K2 Resolution FoM Using Continuous-Time Readout
    Toth, Nandor G.; Tang, Zhong; Someya, Teruki; Pan, Sining; Makinwa, Kofi A. A.;
    In 2023 IEEE International Solid-State Circuits Conference (ISSCC),
    pp. 358-360, 2023. DOI: 10.1109/ISSCC42615.2023.10067457

  5. A Sub-1V 810nW Capacitively-Biased BJT-Based Temperature Sensor with an Inaccuracy of ±0.15°C (3σ) from −55°C to 125°C
    Tang, Zhong; Pan, Sining; Makinwa, Kofi A. A.;
    In 2023 IEEE International Solid-State Circuits Conference (ISSCC),
    pp. 22-24, 2023. DOI: 10.1109/ISSCC42615.2023.10067695

  6. A 40A Shunt-Based Current Sensor with ±0.2% Gain Error from −40°C to 125°C and Self-Calibration
    Tang, Zhong; Toth, Nandor G.; Zamparette, Roger; Nezuka, Tomohiro; Furuta, Yoshikazu; Makinwa, Kofi A. A.;
    In 2023 IEEE International Solid-State Circuits Conference (ISSCC),
    pp. 348-350, 2023. DOI: 10.1109/ISSCC42615.2023.10067304

  7. A Versatile ±25-A Shunt-Based Current Sensor With ±0.25% Gain Error From −40 °C to 85 °C
    Tang, Zhong; Zamparette, Roger; Furuta, Yoshikazu; Nezuka, Tomohiro; Makinwa, Kofi A. A.;
    IEEE Journal of Solid-State Circuits,
    Volume 57, Issue 12, pp. 3716-3725, 2022. DOI: 10.1109/JSSC.2022.3204520

  8. A ±25A Versatile Shunt-Based Current Sensor with 10kHz Bandwidth and ±0.25% Gain Error from -40°C to 85°C Using 2-Current Calibration
    Tang, Zhong; Zamparette, Roger; Furuta, Yoshikazu; Nezuka, Tomohiro; Makinwa, Kofi A. A.;
    In 2022 IEEE International Solid-State Circuits Conference (ISSCC),
    pp. 66-68, 2022. DOI: 10.1109/ISSCC42614.2022.9731777

BibTeX support

Last updated: 7 Jul 2023

Zhong Tang