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2011 Proceedings of the ESSCIRC (ESSCIRC)最新文献

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An audio 91-dB THD third-order fully-differential class-D amplifier 音频91 db THD三阶全差分d类放大器
Pub Date : 2011-10-13 DOI: 10.1109/ESSCIRC.2011.6044922
D. Cartasegna, P. Malcovati, L. Crespi, Kyehyung Lee, Lakshmi Murukutla, A. Baschirotto
Class-D amplifiers exhibit high efficiency in spite of their simple implementation and, therefore, they are often used in portable devices with typical THD performance of the order of −65 dB. Presently, the possibility of using class-D amplifiers in applications requiring better THD (THD < −85 dB) is being investigated, in consideration of their possible application in huge markets (like high-performance audio). For this reason, the THD performance of conventional class-D structures is not enough and new topologies have to be analyzed and implemented. In this paper, high-order class-D structures have been investigated to achieve the target THD performance. Among them, we selected a 3rd-order fully-differential class-D amplifier, which has been implemented in a 0.18-μm CMOS technology, starting from a previously available 1st-order class-D structure. The measurements on the realized 3rd-order device show a THD ≈ −91 dB with −1 dBFS input signal, about 30 dB better than the 1st-order structure.
d类放大器具有很高的效率,尽管它们的实现简单,因此,它们通常用于便携式设备,典型的THD性能为−65 dB。目前,考虑到d类放大器在巨大市场(如高性能音频)的可能应用,正在研究在需要更好THD (THD < - 85 dB)的应用中使用d类放大器的可能性。因此,传统的d类结构的THD性能不够,必须分析和实现新的拓扑结构。本文研究了高阶d类结构以实现目标THD性能。其中,我们选择了一种三阶全差分d类放大器,该放大器从先前可用的一阶d类结构开始,采用0.18 μm CMOS技术实现。在三阶器件上的测量结果表明,当输入信号为- 1 dBFS时,该器件的THD≈- 91 dB,比一阶器件高约30 dB。
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引用次数: 12
A 3.3V 500mA digital Buck-Boost converter with 92% peak efficiency using constant ON/OFF time delta-sigma fractional-N control 3.3V 500mA数字Buck-Boost转换器,峰值效率92%,采用恒定开/关时间δ - σ分数n控制
Pub Date : 2011-10-13 DOI: 10.1109/ESSCIRC.2011.6045001
Q. Khan, Sachin Rao, Damian Swank, A. Rao, W. McIntyre, Sarvesh Bang, P. Hanumolu
A digitally controlled Buck-Boost converter uses a fully synthesized constant ON/OFF time-based fractional-N controller to regulate the output over a 3.3V-to-5.5V input voltage range. The proposed architecture does not use either a high resolution digital pulse width modulator or an analog to digital converter. Fabricated in a 500nm CMOS process, the prototype achieves a peak efficiency of 92% at 500mA load current. The use of a smaller inductor and no external compensation capacitor makes the proposed solution highly cost effective.
数字控制Buck-Boost转换器采用完全合成的基于恒定开/关时间的分数n控制器,在3.3 v至5.5 v输入电压范围内调节输出。所提出的架构既不使用高分辨率数字脉宽调制器,也不使用模数转换器。该原型机采用500nm CMOS工艺制造,在500mA负载电流下达到92%的峰值效率。使用更小的电感和无外部补偿电容器使所提出的解决方案具有很高的成本效益。
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引用次数: 1
A single-inductor multiple-bipolar-output (SIMBO) converter with fully-adaptive feedback matrix and improved light-load ripple 具有全自适应反馈矩阵和改进轻载纹波的单电感多双极输出(SIMBO)变换器
Pub Date : 2011-10-13 DOI: 10.1109/ESSCIRC.2011.6045000
Weiwei Xu, Ye Li, Zhiliang Hong, D. Killat, H. Schleifer
Specified for one output channel 1V to 4V, the second one 1.8V to 4V and the last one 0V to −1.8V, a prototype of single-inductor multiple-bipolar-output (SIMBO) DC-DC converter performed on 0.25-μm CMOS mixed signal process is presented. Fully-adaptive feedback matrix in pulse-width modulation (PWM) control to suppress cross regulation and constant-voltage-ripple pulse-frequency modulation (PFM) control to achieve fair light-load ripple for various conversion mode and wide-range conversion ratio are proposed. This converter can automatically switch between PWM and PFM control. The peak conversion efficiency is close to 90%.
提出了一种基于0.25 μm CMOS混合信号处理的单电感多双极输出(SIMBO) DC-DC变换器样机,该变换器的输出通道分别为1V ~ 4V、1.8V ~ 4V和0V ~−1.8V。提出了全自适应反馈矩阵在脉宽调制(PWM)控制中抑制交叉调节和恒压纹波脉频调制(PFM)控制中实现各种转换模式和大范围转换比下的公平轻载纹波。该转换器可以在PWM和PFM控制之间自动切换。峰值转换效率接近90%。
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引用次数: 1
Photonics — Electronics integration on CMOS 光子学- CMOS上的电子集成
Pub Date : 2011-10-13 DOI: 10.1109/ESSDERC.2011.6044241
L. Fulbert, J. Fédéli
Silicon photonics has generated an outstanding interest for optical communications and for inter and intra-chip interconnects in electronic systems. High performance generic building blocks that can be used for a broad range of applications have already been demonstrated such as waveguides, I/O couplers, laser sources by III-V/Si heterogeneous integration, fast silicon modulators and germanium photodetectors. The paper will also review the different scenarios for integrating photonic functions with an electronic circuit, as well as the associated design, test and packaging challenges.
硅光子学在光通信和电子系统中的芯片间和芯片内互连方面产生了突出的兴趣。高性能通用构建块,可用于广泛的应用已经被证明,如波导,I/O耦合器,激光源III-V/Si异质集成,快速硅调制器和锗光电探测器。本文还将回顾将光子功能与电子电路集成的不同场景,以及相关的设计,测试和封装挑战。
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引用次数: 4
A 53-nW 9.12-ENOB 1-kS/s SAR ADC in 0.13-μm CMOS for medical implant devices 基于0.13 μm CMOS的53-nW 9.12-ENOB 1-kS/s SAR ADC
Pub Date : 2011-10-13 DOI: 10.1109/ESSCIRC.2011.6045008
Dai Zhang, Ameya Bhide, A. Alvandpour
This paper describes an ultra-low-power SAR ADC in 0.13-μm CMOS technology for medical implant devices. It utilizes an ultra-low-power design strategy, imposing maximum simplicity in ADC architecture, low transistor count, low-voltage low-leakage circuit techniques, and matched capacitive DAC with a switching scheme which results in full-range sampling without switch bootstrapping and extra reset voltage. Furthermore, a dual-supply scheme allows the SAR logic to operate at 400mV. The ADC has been fabricated in 0.13-μm CMOS. In 1.0-V single-supply mode, the ADC consumes 65nW at a sampling rate of 1kS/s, while in dual-supply mode (1.0V for analog and 0.4V for digital) it consumes 53nW (18% reduction) and achieves the same ENOB of 9.12. 24% of the 53-nW total power is due to leakage. To the authors' best knowledge, this is the lowest reported power consumption of a 10-bit ADC for such sampling rates.
介绍了一种用于医疗植入器件的0.13 μm CMOS超低功耗SAR ADC。它采用超低功耗设计策略,最大限度地简化了ADC架构,低晶体管计数,低压低漏电路技术,并将电容式DAC与开关方案相匹配,从而实现全范围采样,无需开关自启动和额外复位电压。此外,双电源方案允许SAR逻辑在400mV下工作。该ADC采用0.13 μm CMOS结构。在1.0V单电源模式下,ADC以1kS/s的采样率消耗65nW,而在双电源模式下(模拟1.0V和数字0.4V), ADC消耗53nW(降低18%),ENOB同样为9.12。53-nW总功率的24%是由于泄漏造成的。据作者所知,这是此类采样率下10位ADC的最低功耗。
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引用次数: 126
A 100m-range 10-frame/s 340×96-pixel time-of-flight depth sensor in 0.18μm CMOS 100米范围10帧/秒340×96-pixel飞行时间深度传感器,0.18μm CMOS
Pub Date : 2011-10-13 DOI: 10.1109/ESSCIRC.2011.6044926
C. Niclass, M. Soga, H. Matsubara, S. Kato
This paper introduces a high-performance optical depth sensor in a 0.18μm CMOS technology. At the core of the sensor, macro pixels consisting of 6×2 single-photon detectors enable accurate and selective time-of-flight measurements by taking advantage of temporal and spatial correlations of photons. An array of 32 high-throughput time-to-digital converters allows for the digitization of time-of-flight data with a resolution of 208ps within a range of 853ns, thus resolving distances up to 128 meters. Quantitative characterization of the chip sensor is reported. Depth map data acquired in a real-world situation illustrates the effectiveness of the approach in a road traffic environment.
介绍了一种采用0.18μm CMOS技术的高性能光学深度传感器。在传感器的核心,由6×2单光子探测器组成的宏像素通过利用光子的时空相关性实现精确和选择性的飞行时间测量。32个高通量时间-数字转换器阵列允许在853ns范围内以208ps的分辨率对飞行时间数据进行数字化,从而分辨距离可达128米。报道了芯片传感器的定量表征。在真实情况下获得的深度图数据说明了该方法在道路交通环境中的有效性。
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引用次数: 49
A fully integrated high security NFC target IC using 0.18 μm CMOS process 采用0.18 μm CMOS工艺的全集成高安全性NFC目标IC
Pub Date : 2011-10-13 DOI: 10.1109/ESSCIRC.2011.6044944
Jong‐Wook Lee, D. H. Vo, Sang-Hoon Hong, Quoc-Hung Huynh
We present a fully-integrated compact (1.1 mm2) target device for Near Field Communication (NFC). The design of the key analog part of the tag IC is presented, which includes a robust demodulator for 10% ASK envelope detection, a high-quality random number generator, an adaptive RF limiter, and a low power clock generator. A 128 bit advanced encryption standard (AES) with new cyclic key generation is used for secure data encryption and decryption. An on-chip 4Kb EEPROM is used to support the AES operation. The tag chip is fabricated in a 1-poly 6-metal low-power (LP) 0.18 μm CMOS process with a CoSi2-Schottky diode and EEPROM process.
我们提出了一种用于近场通信(NFC)的完全集成的紧凑(1.1 mm2)目标设备。介绍了标签IC关键模拟部分的设计,包括用于10% ASK包络检测的鲁棒解调器、高质量随机数发生器、自适应射频限幅器和低功耗时钟发生器。采用具有新循环密钥生成的128位高级加密标准(AES)对数据进行安全加密和解密。片上4Kb EEPROM用于支持AES操作。该标签芯片采用1聚6金属低功耗(LP) 0.18 μm CMOS工艺,采用cosi2 -肖特基二极管和EEPROM工艺制造。
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引用次数: 12
55nm CMOS 12-bit 250MHz digital-to-analog converter with dynamic voltage scaling (DVS) technique through single-inductor dual-output (SIDO) converter 55nm CMOS 12位250MHz数模转换器,采用动态电压缩放(DVS)技术,通过单电感双输出(SIDO)转换器
Pub Date : 2011-10-13 DOI: 10.1109/ESSCIRC.2011.6044987
Tzu-Chi Huang, W. Chou, Yu-Huei Lee, Yao-Yi Yang, Ke-Horng Chen, Y. Peng, F. Hsueh
This 55nm CMOS 12-bit current-steering DAC directly powered by the single-inductor dual-output (SIDO) switching DC-DC converter with the dynamic voltage scaling (DVS) technique improves the DAC's power efficiency by 25% and achieves 65.34dB SFDR. The proposed 3S method, including separating, splitting, and shifting, effectively reduces the current mismatching within 0.2% and suppresses the switching noise interference from the SIDO converter. The 12-bit DAC and SIDO module achieve compatible performance compare to the tradition method and has the benefit of area and energy efficiency.
这款55nm CMOS 12位电流转向DAC直接由单电感双输出(SIDO)开关DC-DC转换器和动态电压缩放(DVS)技术供电,将DAC的功率效率提高了25%,SFDR达到65.34dB。提出的3S方法,包括分离、分裂和移位,有效地将电流失配降低到0.2%以内,并抑制了SIDO转换器的开关噪声干扰。与传统方法相比,12位DAC和SIDO模块实现了兼容的性能,并且具有面积和能源效率的优点。
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引用次数: 3
915-MHz wireless 64-channel neural recording SoC with programmable mixed-signal FIR filters 915-MHz无线64通道神经记录SoC与可编程混合信号FIR滤波器
Pub Date : 2011-10-13 DOI: 10.1109/ESSCIRC.2011.6044947
K. Abdelhalim, R. Genov
A system-on-chip (SoC) neural recording interface with 64 channels, 64 16-tap programmable mixed-signal FIR filters and a fully integrated 915MHz OOK/FSK closed-loop wireless transmitter is presented. Each recording channel has a fully differential amplifier with 54dB of gain and utilizes a tunable low-distortion subthreshold MOS-resistor to reject DC offsets with an input-referred noise of 6.5μV and a CMRR of 78dB. Each channel contains a modified 8-bit SAR ADC with an ENOB of 7.8-bits and can provide analog-digital multiplication by modifying the the sampling phase of the ADC. It is used in conjunction with 12-bit digital adders and registers to implement 64 programmable transposed FIR filters that enable precise separation of various bands in the neural spectrum. The 915MHz FSK/OOK transmitter offers data rates up to 1.5Mbps with a maximum output power of 0dBm. The 4×3mm chip fabricated in a 0.13μm CMOS process dissipates 5.03mW from a 1.2V supply.
提出了一种具有64通道、64个16分路可编程混合信号FIR滤波器和完全集成的915MHz OOK/FSK闭环无线发射机的片上系统(SoC)神经记录接口。每个记录通道都有一个增益为54dB的全差分放大器,并利用一个可调的低失真亚阈值mos电阻来抑制输入参考噪声为6.5μV、CMRR为78dB的直流偏移。每个通道包含一个改进的8位SAR ADC,其ENOB为7.8位,可以通过修改ADC的采样相位来提供模拟-数字乘法。它与12位数字加法器和寄存器一起使用,实现64个可编程的转置FIR滤波器,能够精确分离神经频谱中的各种波段。915MHz FSK/OOK发射机提供高达1.5Mbps的数据速率,最大输出功率为0dBm。采用0.13μm CMOS工艺制造的4×3mm芯片在1.2V电源下功耗为5.03mW。
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引用次数: 18
A 7-bit 300-MS/s subranging ADC with embedded threshold & gain-loss calibration 一个7位300毫秒/秒分段ADC,内置阈值和增益损耗校准
Pub Date : 2011-10-13 DOI: 10.1109/ESSCIRC.2011.6044982
U. Chio, Chi-Hang Chan, Hou-Lon Choi, Sai-Weng Sin, U. Seng-Pan, R. Martins
This paper reports a 7-bit 300-MS/s subranging ADC fabricated in standard 65nm CMOS, which utilizes embedded reference and gain loss error calibration techniques. A shared passive capacitive DAC array performs the input sampling in quantization mode and reference generation in calibration mode, providing a linear, accurate and compact calibration implementation. As a consequence of the developed calibration techniques, uniform-sized dynamic comparators are employed to reduce the process-mismatch variation and nonlinearity error, when compared with the conventional structures. The ADC achieves peak SNDR of 40.5dB at 300MS/s and 39dB at 400MS/s, with ERBW of 300MHz and 350MHz, respectively. The power consumption is 2.3mW only from 1.2-V supply at 300MS/s.
本文报道了一种采用嵌入式基准和增益损耗误差校准技术,在标准65nm CMOS上制作的7位300毫秒/秒的分位ADC。共享无源电容式DAC阵列在量化模式下执行输入采样,在校准模式下执行参考生成,提供线性,精确和紧凑的校准实现。由于开发了校准技术,与传统结构相比,采用了均匀尺寸的动态比较器来减少过程不匹配变化和非线性误差。该ADC在300MS/s和400MS/s时的峰值信噪比分别为40.5dB和39dB, ERBW分别为300MHz和350MHz。功耗仅为2.3mW, 1.2 v电源,300MS/s。
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引用次数: 1
期刊
2011 Proceedings of the ESSCIRC (ESSCIRC)
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