Session32_Low-Power Noise-Shaping ADCs.pdf

1、ISSCC 2026SESSION 32Low-Power Noise-Shaping ADCs32.1:A 98.5dB-SNDR 250kHz-BW 1V-Supply Continuous-Time Zoom ADC with Smart-Tracking and Floating-Tail-Resistor Linearized Gm-C Loop Filter 2026 IEEE International Solid-State Circuits Conference1 of 50A 98.5dB-SNDR 250kHz-BW 1V-Supply Continuous-Time Z

2、oom ADC with Smart-Tracking and Floating-Tail-Resistor Linearized Gm-C Loop FilterChaoyang Xing,Yilu Cui,Yi Zhong,Sining Pan,Nan Sun and Lu JieTsinghua University32.1:A 98.5dB-SNDR 250kHz-BW 1V-Supply Continuous-Time Zoom ADC with Smart-Tracking and Floating-Tail-Resistor Linearized Gm-C Loop Filter

3、 2026 IEEE International Solid-State Circuits Conference2 of 50Outline Background Smart-tracking Zoom architecture Gmcell implementation Circuit operation details Measurement result Conclusion32.1:A 98.5dB-SNDR 250kHz-BW 1V-Supply Continuous-Time Zoom ADC with Smart-Tracking and Floating-Tail-Resist

4、or Linearized Gm-C Loop Filter 2026 IEEE International Solid-State Circuits Conference3 of 50Zoom ADCThis work FoMS(dB)FS,nyq(Hz)High-resolution ADC surveyB.Murmann,ADC Performance Survey 1997-2025,Online.Available:https:/ 98.5dB-SNDR 250kHz-BW 1V-Supply Continuous-Time Zoom ADC with Smart-Tracking

5、and Floating-Tail-Resistor Linearized Gm-C Loop Filter 2026 IEEE International Solid-State Circuits Conference4 of 50Conventional Zoom ADC High resolution and high power efficiency Hard-to-drive switch-cap frontend Complicated and scaling-unfriendly loop filterVREF-VREFVIN-LF-VRESADC-.32.1:A 98.5dB-

6、SNDR 250kHz-BW 1V-Supply Continuous-Time Zoom ADC with Smart-Tracking and Floating-Tail-Resistor Linearized Gm-C Loop Filter 2026 IEEE International Solid-State Circuits Conference5 of 50Prior work:CT-Zoom+SAR(MASH 0-1-0)Advantages:VLSI25 C.Xing Easy-to-drive capacitor coupling frontend Simple 1stor