机构

Tsinghua University

39 篇 ISSCC 论文

ISSCC 2026 Session 9 Wireless
A Multi-Coil Scalable Energy-Shared Wireless Power Receiver Network for Distributed Time-Division-Multiplexing Somatosensory Cortex Stimulation
Kai Cui, Yan Lu
Abstract This work presents a system-level scalable wireless power receiver (RX) network for miniaturized distributed somatosensory cortex stimulation. By interconnecting the power outputs of all RX cells in the network,
ISSCC 2026 Session 8 Wireline I/O
A 180-to-240Gb/s Analog-Intensive PAM-4 Transmitter with 0.70pJ/b Analog Power Efficiency in 65nm CMOS
Ziyi Lin, Haikun Jia, Wei Deng, Shitu He, Chang Liu, Zhihua Wang, Baoyong Chi
Abstract This paper presents a 180-240Gb/s analog-intensive PAM-4 transmitter in 65nm CMOS process. A three-stage cascaded 2-to-1 analog MUX (AMUX) is employed to reduce the complexity and therefore the parasitic capacit
ISSCC 2026 Session 32 Data Converters
A 98.5dB-SNDR 250kHz-BW 1V-Supply Continuous-Time Zoom ADC with Smart-Tracking and Floating-Tail-Resistor Linearized Gm-C Loop Filter
Chaoyang Xing, Yilu Cui, Sining Pan, Yi Zhong, Nan Sun, Lu Jie
Abstract This paper presents a 98.5dB SNDR, 250kHz bandwidth CT incremental Zoom ADC. The design features a chopped capacitive front-end, Gm-C residue integrator, and 10b SAR ADC. A smart-tracking (ST) technique with dyn
ISSCC 2026 Session 31 AI / ML
A 28nm Speculative-Decoding LLM Processor Achieving 105-to-685μs/Token Latency for Billion-Parameter Models
Yang Wang1, Huanyu Wang1, Jiaxin Yang1, Yutong Su1, Ruiqi Guo1, Zhiheng Yue1, Jiangyuan Gu1, Shaojun Wei1, Yang Hu1, Sho
Abstract LLMs face decoding bottlenecks. Speculative Decoding (SD) reduces latency via a small draft model for serial decoding and a large target model to verify in parallel. Despite this advantage, it still suffers from
ISSCC 2026 Session 26 Power Management
A Compact Dual-Capacitor Relay SPT Supply Modulator with Overshoot-Free Adaptive On-Time Control for 5G FR2 CMOS PA
Zhewen Yu1,2, Zhiguo Tong2, Junwei Huang2, Jun Yin2, Yan Lu1
Abstract 5G new-radio frequency-range-2 CMOS PAs with high peak-to-average-power ratios suffer from low efficiency, calling for compact and fast symbol-power-tracking (SPT) supply modulators (SMs). Inductor-based SPT sho
ISSCC 2026 Session 26 Power Management
An Inductor-at-Middle Hybrid Buck Converter with Shared Power-Signal Path for Distributed Vertical Power Delivery
Zhongyao Zhu1,2, Junwei Huang2, Zhibang Song1,2, Zhewen Yu1,2, Shousheng Han2, Sai-Weng Sin2, Yan Lu1
Abstract This work presents an inductor-at-middle hybrid buck converter for high-current density vertical power delivery, reusing the power inductors as signal feedback paths. The proposed switching-bus-multiplexing cont
ISSCC 2026 Session 21 RF & Wireless
A CMOS Hybrid Common-Gate Current-Integrating Sampler with >37dB SNDR Across 51GHz BW in a 128GS/s Front-End
Jun Dai1, Yi Zhong1, Yunsong Tao1, Aodong Zhang1, Mingtao Zhan1, Hao Zhang2, Lu Jie1, Nan Sun1
Abstract This work proposes a CMOS hybrid common-gate current integrating sampler to address linearity, BW, and jitter limitations in prior wideband ADC front-ends. The front-end employs a hybrid common-gate V-I converte
ISSCC 2026 Session 2 Digital Processors
A 0.24mJ/Frame Quadratic Interpolation 4DGS Processor with Recursive Computation Reuse and Tree-Based Parallel-Rendering
Xiaolong Yang, Yang Wang, Wende Xu, Yubin Qin, Huanyu Wang, Ruiqi Guo, Zhiheng Yue, Jiangyuan Gu, Shaojun Wei, Yang Hu,
Abstract 4D Gaussian Splatting (4DGS) has widespread applications in fields such as VR, AR and industrial simulation. However, 4DGS suffers from significant memory requirements, redundant computations and low PE utilizat
ISSCC 2026 Session 2 Digital Processors
A 1286fps 0.39mJ/Frame Modeling/Rendering Unified 3D GS Processor with Locality-Optimized Computation and Reconfigurable Architecture
Hedi Wang*, Xiaoyu Feng*, Weichen Gao, Huazhong Yang, Yongpan Liu
*Equally Credited Authors (ECAs) Abstract A modeling/rendering unified 3D GS processor is proposed with: 1) A locality-aware dynamic fine-grained rendering engine for reduced redundant computation. 2) A locality-optimize
ISSCC 2026 Session 18 Other
A 28nm 47.3TFLOPs/W 894mJ/Inference Visual Autoregressive Accelerator with Differential-Amplifier Speculation and Chain-Reaction-Like Parallel Generation
Zhiheng Yue*, Xujiang Xiang*, Jiamu Fu, Shaojun Wei, Yang Wang, Yang Hu, Shouyi Yin
*Equally Credited Authors (ECAs) Abstract To accelerate Visual Autoregressive (VAR) applications, this work implements a 28nm VAR accelerator achieving 47.3TFLOPs/W and <0.6% FID loss. A differential visual attention amp
ISSCC 2026 Session 12 Clocking & PLLs
A 5.7mW@0.55V-to-50mW@0.9V Deeply Power-Scalable Reconfigurable Series-Resonance/Class-F VCO with Mutual-Inductance Self-Cancellation and Hybrid 8-Shaped Coupling Techniques
Juntao Lan, Wei Deng, Haikun Jia, Shiwei Zhang, Zhihua Wang, Baoyong Chi
Abstract This work presents a 28nm deeply power-scalable reconfigurable series-resonance/ClassF VCO with mutual-inductance self-cancellation and hybrid 8-shaped coupling techniques, achieving power scalability from 5.7 t
ISSCC 2026 Session 12 Clocking & PLLs
A 7.15-to-7.95GHz Magnetically Enhanced Feedforward Waveform-Shaping CMOS Oscillator with Implicit Common-Mode Noise Cancellation Achieving -146.72dBc/Hz PN@1MHz and 190.6dBc/Hz FoM
Rui Ma, Wei Deng, Haikun Jia, Juntao Lan, Zhihua Wang, Baoyong Chi
Abstract Pure microwave sources are vital for precision instrumentation, but conventional schemes are bulky and costly. CMOS oscillators are inexpensive and compact yet limited by phasenoise performance. To address this,
ISSCC 2026 Session 12 Clocking & PLLs
A 14GHz Chopper-Refolding Sampling PLL Achieving 33.8fsrms and 80.8dBc Reference Spur with a kT/C-Noise-Cancellation SPD
Yichen Liu, Jian Zhang, Xiaosen Liu, Yan Wang
Abstract A 14GHz chopper-refolding sampling PLL is implemented in 28nm CMOS, integrating a kT/C-noise-cancellation sampling phase detector (SPD) and a self-injection VCO with harmonic-impedance expansion. The SPD decoupl
ISSCC 2026 Session 11 Data Converters
A 13b 500MS/s 94dB-SFDR Resistive-Input Pipelined-SAR ADC with Linear and Efficient Current-Buffer-Based Integrating Sampler
Xiyu He, Mingyang Gu, Yunsong Tao, Siyu Huang, Zhishuai Zhang, Yi Zhong, Nan Sun, Lu Jie
Abstract This work proposes a pipelined-SAR ADC featuring a current-buffer-based integrating sampler that presents a resistive input with good linearity. A floating charge transferrer (FCT) with multi-bit pre-conversion
ISSCC 2026 Session 10 Digital Circuits
SharpSAT: A Heuristic-Learning-Based SAT Accelerator Achieving 0.8μs/16.1μs Solution Time in SAT/UNSAT Cases
Yi Huang, Hao Kong, Iris Ying Chou, Bin Wang, Xiangyu Kong, Jianfeng Zhu, Liangwei Li, Xiao Li, Hanning Wang, Aoyang Zha
Abstract We present SharpSAT, a heuristic-learning SAT accelerator that achieves fast solution times of 0.8$s for SAT and 16.1$s for UNSAT cases. Our design integrates: a fast clause learning unit that prunes the search
ISSCC 2025 Session 5 RF & Wireless
A GaN SLCG-Doherty-Continuum Power Amplifier Achieving >38% 6dB Back-Off Efficiency over 1.35 to 7.6GHz
Guansheng Lv1, Wenhua Chen1, Xiaofan Chen1, Fei Huang2, Zhenghe Feng1
Gaxtrem Technology, Beijing, China 1 2 To maximize throughput, wireless standards often mandate channels with hundreds of MHz bandwidths (BWs) over multiple non-contiguous bands. In addition, as spectrally efficient comp
ISSCC 2025 Session 28 Sensors
A 143dB-Dynamic-Range 119dB-CMRR Capacitance-to-Digital Converter for High-Resolution Floating-Target Displacement Sensing
Sining Pan1, Xiaolong Zhang1, Baoyi Zheng1, Yihang Cheng1, Hui Jiang2, Huaqiang Wu1
systems [1-4]. Compared to eddy-current displacement sensors [1], capacitive displacement sensors are potentially more energy efficient [2-4]. However, they are more susceptible to electric-field interferences on an elec
ISSCC 2025 Session 24 Data Converters
A 12b 3GS/s Pipelined ADC with Gated-LMS-Based Piecewise-Linear Nonlinearity Calibration
Mingyang Gu, Yi Zhong, Lu Jie, Nan Sun
The pipelined ADC is an attractive choice for high-speed and high-resolution applications. Its most important building block is the residue amplifier. Compared with conventional closed-loop amplifiers, open-loop amplifie
ISSCC 2025 Session 2 Digital Processors
mJ/Frame 373fps 3D GS Processor Based on Shape-Aware Hybrid Architecture Using Earlier Computation Skipping and Gaussian Cache Scheduler
Xiaoyu Feng*, Hedi Wang*, Chen Tang, Tongda Wu, Huazhong Yang, Yongpan Liu
applications like virtual reality and embodied AI. Unlike traditional Neural Radiance Fields (NeRF) [1], the novel 3D Gaussian Splatting approach (3D GS) [2] circumvents NeRF’s frequent sampling and intensive network inf
ISSCC 2024 Session 9 Data Converters
A 71dB SNDR 200MHz BW Interleaved Pipe-SAR ADC with a Shared Residue Integrating Amplifier Achieving 173dB FoMs
Xiyu He, Mingyang Gu, Hanjun Jiang, Yi Zhong, Nan Sun, Lu Jie
Wideband (BW >100MHz) and high-dynamic-range (DR >70dB) ADCs are in high demand for next-generation wireless standards. Conventional ADC solutions face challenges in both performance and efficiency: CTDSMs demonstrate fav
ISSCC 2024 Session 6 AI / ML
A 0.35V 0.367TOPS/W Image Sensor with 3-Layer Optical-Electronic Hybrid Convolutional Neural Network
Xuecheng Wang*, Zheng Huang*, Tianyi Liu, Wanxin Shi, Hongwei Chen, Milin Zhang
relies on image sensors coupled with cloud processing or on-chip Artificial Intelligence (AI) processors have encountered significant challenges in terms of power consumption, delays arising from data transmission, and/or
ISSCC 2024 Session 3 Analog Circuits
A 0.028mm2 32MHz RC Frequency Reference in 0.18μm CMOS with ±900ppm Inaccuracy from -40°C to 125°C and ±1600ppm Inaccuracy After Accelerated Aging
Sining Pan1, Yihang Cheng1, Guohua Wu1, Zhihua Wang1, Kofi A. A. Makinwa2, Huaqiang Wu1
small chip area [1-6], and so can potentially replace bulky crystal- or MEMS-based frequency references in cost-sensitive IoT applications. However, due to the large and nonlinear temperature dependence of on-chip resist
ISSCC 2024 Session 22 Analog Circuits
A 4.8GS/s 7-ENoB Time-Interleaved SAR ADC with Dither-Based Background Timing-Skew Calibration and Bit-Distribution-Based Background Ping-Pong Comparator Offset Calibration
Yunsong Tao, Mingyang Gu, Baoyong Chi, Yi Zhong, Lu Jie, Nan Sun
High-speed (>GS/s) medium-resolution (6-8b) ADCs are in high demand for wideband applications. The time-interleaved (TI) SAR ADC is widely used for its superior power efficiency. However, TI ADCs suffer from timing-skew m
ISSCC 2024 Session 19 RF & Wireless
A 13.7-to-41.5GHz 214.1dBc/Hz FoMT Quad-Core Quad-Mode VCO Using an Oscillation-Mode-Splitting Technique
Huanyu Ge, Haikun Jia, Wei Deng, Ruichang Ma, Zhihua Wang, Baoyong Chi
Voltage-controlled-oscillators (VCOs) with simultaneous low phase noise and wide frequency tuning range (FTR) spanning from tens GHz to millimeter-wave (mm-wave) bands are required for various standardized applications,
ISSCC 2023 Session 8 mm-Wave
An 11.5-to-14.3GHz 192.8dBc/Hz FoM at 1MHz Offset Dual-Core Enhanced Class-F VCO with Common-Mode-Noise Self-Cancellation and Isolation Technique
Qixiu Wu, Wei Deng, Haikun Jia, Hongzhuo Liu, Shiwei Zhang, Zhihua Wang, Baoyong Chi
stricter requirements on the power consumption, silicon area, and phase noise specifications for local oscillators (LOs) in mobile and portable devices, especially in battery-powered mobile phones, notebook computers, an
ISSCC 2023 Session 31 RF & Wireless
A Quadrature Uncertain-IF IR-UWB Transceiver with Twin-OOK Modulation
Bowen Wang, Woogeun Rhee, Zhihua Wang
Benefiting from good energy efficiency and fine ranging accuracy, impulse-radio ultrawideband (IR-UWB) has been revived recently for short-distance communications. The IR-UWB transceiver, however, faces two major issues
ISSCC 2023 Session 24 mm-Wave
A 200-to-350GHz SiGe BiCMOS Frequency Doubler with Slotline-Based Mode-Decoupling Harmonic-Tuning Technique Achieving 1.1-to-4.7dBm Output Power
Shuyang Li1, Xingcun Li1,2, Huibo Wu1, Wenhua Chen1
Sanechips Technology, Shenzhen, China 1 2 Silicon-based ultra-broadband terahertz (THz) generation has attracted growing interest in recent years, as it provides a low-cost and high-integration solution for high-resoluti
ISSCC 2023 Session 17 Data Converters
A 10mW 10-ENOB 1GS/s Ring-Amp-Based Pipelined TI-SAR ADC with Split MDAC and Switched Reference Decoupling Capacitor
Mingtao Zhan, Lu Jie, Nan Sun
Next-generation wireless standards (e.g., WiFi-7) advancing towards wider bandwidth and higher order modulation require ADCs with GHz sampling rates and over 12b resolution. Although conventional pipelined ADCs can satis
ISSCC 2022 Session 9 mm-Wave
A 53.6-to-60.2GHz Many-Core Fundamental Oscillator with Scalable Mesh Topology Achieving -136.0dBc/Hz Phase Noise at 10MHz Offset and 190.3dBc/Hz Peak FoM in 65nm CMOS
Haikun Jia, Ruichang Ma, Wei Deng, Zhihua Wang, Baoyong Chi
The millimeter-wave (mm-wave) high-speed wireless communication has placed stringent requirements on the phase-noise performance of the local oscillators (LO), especially when a high-order modulation such as 1024-QAM is
ISSCC 2022 Session 19 Power Management
A 1V 32.1dBm 92-to-102GHz Power Amplifier with a Scalable 128-to-1 Power Combiner Achieving 15% Peak PAE in a 65nm Bulk CMOS Process
Wei Zhu, Jiawen Wang, Ruitao Wang, Jian Zhang, Chenguang Li, Sen Yin, Yan Wang
increase of the speed and data-rate achieved by 5G. A major challenge in 6G is to provide a large transmitter output power (Pout) with high energy efficiency and linearity from a limited supply voltage to overcome high p
ISSCC 2022 Session 19 Power Management
A 110-to-130GHz SiGe BiCMOS Doherty Power Amplifier with Slotline-Based Power-Combining Technique Achieving >22dBm Saturated Output Power and >10% Power Back-Off Efficiency
Xingcun Li1,3, Wenhua Chen1, Shuyang Li1, Huibo Wu1, Xiang Yi2, Ruonan Han3, Zhenghe Feng1
data-rates in wireless communications has driven the rapid development of silicon-based transceivers in the mm-wave and sub-THz bands. The broad available spectrum in D-band (110 to 170GHz) is attracting interest for sho
ISSCC 2022 Session 10 Data Converters
A 0.014mm2 10kHz-BW Zoom-Incremental-Counting ADC Achieving 103dB SNDR and 100dB Full-Scale CMRR
Lu Jie1, Mingtao Zhan1, Xiyuan Tang2, Nan Sun1
Peking University, Beijing, China 1 2 High-resolution (>100dB SNDR), kHz-BW ADCs are required by emerging IoT and smart sensing applications. These ADCs are desired for their high efficiency, but low cost and ease of int
ISSCC 2022 Session 10 Data Converters
A 0.004mm2 200MS/s Pipelined SAR ADC with kT/C Noise Cancellation and Robust Ring-Amp
Mingtao Zhan1, Lu Jie1, Xiyuan Tang2, Nan Sun1
Peking University, Beijing, China 1 2 Pipelined ADCs are widely used for high-speed high-resolution applications, but there are two challenges. First, limited by the kT/C noise requirement, its 1st-stage sampling capacit
ISSCC 2021 Session 27 Data Converters
A 250kHz-BW 93dB-SNDR 4th-Order Noise-Shaping SAR Using Capacitor Stacking and Dynamic Buffering
Jiaxin Liu1, Dengquan Li2, Yi Zhong1, Xiyuan Tang3, Nan Sun1,3
Xidian University, Xi’an, China 3 University of Texas, Austin, TX 1 2 The noise-shaping (NS) SAR is an emerging hybrid architecture that aims to combine the benefits of both SAR and ∆Σ ADCs [1-8]. The key in an NS SAR is
ISSCC 2021 Session 20 AI / ML
A 60GHz 186.5dBc/Hz FoM Quad-Core Fundamental VCO Using Circular Triple-Coupled Transformer with No Mode Ambiguity in 65nm CMOS
Haikun Jia, Wei Deng, Pingda Guan, Zhihua Wang, Baoyong Chi
The recent development of the 5th-generation (5G) communication sytems has set increasingly strict requirements on the spectral purity of millimeter-wave (mm-wave) local oscillators (LO). Low phase noise is crucial to en
ISSCC 2020 Session 9 Data Converters
A 40kHz-BW 90dB-SNDR Noise-Shaping SAR with 4× Passive Gain and 2nd-Order Mismatch Error Shaping
Jiaxin Liu1, Xing Wang1, Zijie Gao1, Mingtao Zhan1, Xiyuan Tang2, Nan Sun2
have drawn increasing attention due to their simplicity, low power, zero static current, and PVT robustness. However, prior works show limited resolution (ENOB(13b) due to two main challenges. The 1st one is thermal nois
ISSCC 2020 Session 16 Data Converters
A 13b 0.005mm2 40MS/s SAR ADC with kT/C Noise Cancellation
Jiaxin Liu1, Xiyuan Tang2, Wenda Zhao2, Linxiao Shen2, Nan Sun2
University of Texas, Austin, TX 1 2 As with any ADC with a front-end S/H, the SAR ADC suffers from a fundamental SNR challenge: its sampling kT/C noise. To satisfy the SNR requirement, the input capacitor has to be suffi
ISSCC 2014 Session 9 Wireless
A 13.3mW 500Mb/s IR-UWB Transceiver with LinkMargin Enhancement Technique for Meter-Range Communications
Shuli Geng, Dang Liu, Yanfeng Li, Huiying Zhuo, Woogeun Rhee, Zhihua Wang
medical equipment has not been rapidly developed. For wireless medical applications, lossless connection and noninvasive transmission are important factors. Moreover, in medical imaging applications such as 4D ultrasound
ISSCC 2008 Session 19 Clocking & PLLs
A 1GHz Fractional-N PLL Clock Generator with Low-OSR ΔΣ Modulation and FIR-Embedded Noise Filtering
Xueyi Yu, Yuanfeng Sun, Li Zhang, Woogeun Rhee, Zhihua Wang
Offering less than 1ppm frequency resolution, a ΔΣ fractional-N PLL enables flexible frequency planning and reliable spread spectrum modulation for digital clock generation [1, 2]. Use of low-cost ring VCOs however, mand