ISSCC 2019
Session 20
Data Converters
A 72.6dB-SNDR 100MHz-BW 16.36mW CTDSM with Preliminary Sampling and Quantization Scheme in Backend Subranging QTZ
Instituto Superior Tecnico/University of Lisboa, Lisbon, Portugal 1 2 Driven by great demands for high data transfer rates in mobile communications, ADCs require wide bandwidths with low noise density and power consumpti
ISSCC 2019
Session 20
Data Converters
An 80MHz-BW 31.9fJ/conv-step Filtering ΔΣ ADC with a Built-In DAC-Segmentation/ELD-Compensation 6b 960MS/s SAR-Quantizer in 28nm LP for 802.11ax Applications
rate, which speeds up the development of the next-generation wireless-LAN (WLAN) standard. To improve spectrum efficiency and serve more users in crowded areas while increasing maximum throughput, 802.11ax supports 1024QA
ISSCC 2019
Session 20
Data Converters
A 76.6dB-SNDR 50MHz-BW 29.2mW Noise-CouplingAssisted CT Sturdy MASH ΔΣ Modulator with 1.5b/4b Quantizers in 28nm CMOS
Rui P. Martins1,3, Maurits Ortmanns2 University of Macau, Macau, China, University of Ulm, Ulm, Germany 3 Instituto Superior Tecnico/University of Lisboa, Lisbon, Portugal 1 2 The demands for wider cellular bandwidth (BW
ISSCC 2019
Session 20
Data Converters
An 8×-OSR 25MHz-BW 79.4dB/74dB DR/SNDR CT ΔΣ Modulator Using 7b Linearized Segmented DACs with Digital Noise-Coupling-Compensation Filter in 7nm FinFET CMOS
block in a cellular receiver design. A continuous-time delta-sigma modulator (CTDSM), which gets the benefit of inherent anti-alias filtering, is a common architecture choice for the ADC. However, low power dissipation dic
ISSCC 2019
Session 20
Data Converters
A 50MHz-Bandwidth 70.4dB-SNDR Calibration-Free Time-Interleaved 4th-Order Noise-Shaping SAR ADC
Noise-Shaping SAR (NS-SAR) is an emerging ADC architecture that offers both high resolution and high energy efficiency. State-of-the-art NS-SAR ADCs eliminate the need for op-amps, which relaxes design complexity and tech
ISSCC 2019
Session 20
Data Converters
A 40MHz-BW 320MS/s Passive Noise-Shaping SAR ADC with Passive Signal-Residue Summation in 14nm FinFET
applications due to their low power and small area. SNR of 60-70dB is necessary to meet the noise budget for the downlink chain in the 802.11 ac/ax standards. Comparator noise and quantization noise are typically the dom
ISSCC 2019
Session 20
Data Converters
A 5GS/s 7.2 ENOB Time-Interleaved VCO-Based ADC Achieving 30.5fJ/conv-step
Technology scaling has been very beneficial for digital circuits both in terms of speed and power. Traditional analog techniques however are challenged by the ever-decreasing supply voltages. Highly digital VCO-based ADCs
ISSCC 2018
Session 22
Data Converters
A 16b 12GS/s Single/Dual-Rate DAC with Successive Bandpass Delta-Sigma Modulator Achieving <-67dBc IM3 Within DC-to-6GHz Tunable Passbands
The agile allocation of signal bands over RF frequencies and high in-band spectral purity (both SFDR and NSD) can enable higher-order modulation in highthroughput flexible wireless/wireline transmitters, where signals ar
ISSCC 2018
Session 22
Data Converters
A 16b 6GS/s Nyquist DAC with IMD <-90dBc up to 1.9GHz in 16nm CMOS
over a wide bandwidth while consuming low power and small area [1] - [6]. In this work, a 16b 6GS/s Nyquist current-steering DAC in 16nm CMOS is presented. Utilizing bounded INL calibration and thermometer DEM to tackle
ISSCC 2018
Session 22
Data Converters
A 24-to-72GS/s 8b Time-Interleaved SAR ADC with 2.0-to-3.3pJ/conversion and >30dB SNDR at Nyquist in 14nm CMOS FinFET
Alessandro Cevrero1, Ilter Ozkaya1,3, Thomas Toifl1 IBM Zurich Research Laboratory, Rueschlikon, Switzerland ETH Zurich, Zurich, Switzerland; 3EPFL, Lausanne, Switzerland 1 2 Optical communication standards, such as ITU
ISSCC 2018
Session 14
Data Converters
A Signal-Independent Background-Calibrating 20b 1MS/s SAR ADC with 0.3ppm INL and calibration noise (the larger μe, the faster calibration but higher calibration noise).
Derek Hummerston3, Naveed Naeem1 The ADC core, which implements this technique, is shown in Fig. 14.7.3. The framework is a pipelined SAR ADC architecture [3] to extend the acquisition time. The first stage has 11b resol
ISSCC 2018
Session 14
Data Converters
A 0.4V 13b 270kS/s SAR-ISDM ADC with an Opamp-Less Time-Domain Integrator
With advanced DAC switching [1-3] and low-power comparator [4] techniques, the successive-approximation register (SAR) ADC demonstrates convincing performance with technology development for internet-of-everything (IoE)
ISSCC 2018
Session 14
Data Converters
A 280μW Dynamic-Zoom ADC with 120dB DR and 118dB SNDR in 1kHz BW
Robert Van Veldhoven2, Kofi A. A. Makinwa1 Delft University of Technology, Delft, The Netherlands NXP Semiconductors, Eindhoven, The Netherlands 1 2 Micro-power ADCs with high linearity and dynamic range (DR) are require
ISSCC 2018
Session 14
Data Converters
A 1.1mW 200kS/s Incremental ΔΣ ADC with a DR of 91.5dB Using Integrator Slicing for Dynamic Power Reduction
Nyquist-rate ADCs with high resolution are needed in many applications where, for example, multiplexed operation is needed as for multichannel sensor readout. For various tasks such as averaging-based analysis or lock-in
ISSCC 2018
Session 14
Data Converters
A 13-ENOB 2nd-Order Noise-Shaping SAR ADC Realizing Optimized NTF Zeros Using an Error-Feedback Structure
The noise-shaping (NS) SAR ADC is an emerging hybrid architecture that achieves high resolution and power-efficiency simultaneously by combining the merits of the SAR ADC and the ΔΣADC, making it attractive to sensor rea
ISSCC 2018
Session 14
Data Converters
A 15.2-ENOB Continuous-Time ΔΣ ADC for a 7.3μW 200mVpp-Linear-Input-Range Neural Recording Front-End
Closed-loop neuromodulation with simultaneous stimulation and sensing is desired to advance deep brain stimulation (DBS) therapies. However, stimulation generates large artifacts (~100mV) at the recording sites that satu
ISSCC 2018
Session 14
Data Converters
A 50MHz-BW Continuous-Time ΔΣ ADC with Dynamic Error Correction Achieving 79.8dB SNDR and 95.2dB SFDR
MediaTek, Woburn, MA 1 2 Continuous-time ΔΣ modulators (CTDSMs) are widely used in cellular handsets due to their power efficiency and inherent anti-aliasing characteristics. To achieve demanding cellular bandwidth requi
ISSCC 2017
Session 28
Data Converters
A 0.7V 12b 160MS/s 12.8fJ/conv-step Pipelined-SAR ADC in 28nm CMOS with Digital Amplifier Technique
g. 802.11ac Wave 2 and 802.11ax draft, aim to boost user throughput to cope with growing data traffic. High-speed (fs>100MS/s) and highresolution (ENOB>9.5b) ADCs are essential for leading-edge wireless SoCs, given the b
ISSCC 2017
Session 28
Data Converters
A 78.5dB-SNDR Radiation- and Metastability-Tolerant Two-Step Split SAR ADC Operating up to 75MS/s with 24.9mW Power Consumption in 65nm CMOS
Irvine, CA 4 Southern Methodist University, Dallas, TX 1 2 High-resolution, low-power radiation-tolerant ADCs are under great demand from medical, aerospace and high-energy physics applications. In the ATLAS Liquid Argon
ISSCC 2017
Session 28
Data Converters
A 10b 1.5GS/s Pipelined-SAR ADC with Background Second-Stage Common-Mode Regulation and Offset Calibration in 14nm CMOS FinFET
Alessandro Cevrero1, Ilter Ozkaya1, Thomas Toifl1 IBM Zurich Research Laboratory, Rueschlikon, Switzerland ETH Zurich, Zurich, Switzerland 1 2 High-speed SAR ADCs became popular with modern CMOS technologies because of t
ISSCC 2017
Session 28
Data Converters
A 12b 330MS/s Pipelined-SAR ADC with PVTStabilized Dynamic Amplifier Achieving <1dB SNDR Variation
Texas Instruments, Dallas, TX 1 2 In high-speed pipeline or pipelined-SAR ADCs, conventional opamp-based residue amplifiers consume significant amounts of power due to stringent settling speed and accuracy requirements.
ISSCC 2017
Session 28
Data Converters
A 125MHz-BW 71.9dB-SNDR VCO-Based CT ΔΣ ADC with Segmented Phase-Domain ELD Compensation in 16nm CMOS
MediaTek, Woburn, MA High-BW continuous-time ΔΣ modulators (CTDSMs), which directly inject excess loop delay compensation (ELDC) at the quantizer input, suffer from the over-range issue due to the 1+αz-1 transfer functio
ISSCC 2017
Session 28
Data Converters
An 11.4mW 80.4dB-SNDR 15MHz-BW CT Delta-Sigma Modulator Using 6b Double-Noise-Shaped Quantizer
Quantizers are key building blocks in both continuous-time (CT) and discrete-time (DT) delta-sigma modulators (DSMs). Among various types of quantizers, noiseshaping quantizers such as VCO-based quantizers and noise-shap
ISSCC 2017
Session 28
Data Converters
A 0.46mW 5MHz-BW 79.7dB-SNDR Noise-Shaping SAR ADC with Dynamic-Amplifier-Based FIR-IIR Filter
The successive approximation register (SAR) ADC is the most energy efficient architecture with moderate conversion rate and resolution. However, its comparator noise limits its resolution without sacrificing power effici
ISSCC 2017
Session 16
Data Converters
A 12b 10GS/s Interleaved Pipeline ADC in 28nm CMOS Technology
Jose Silva1, Janet Brunsilius2, Daniel Rey-Losada2, Frank Murden3, Carroll Speir3, Jeff Bray2, Eric Otte1, Nevena Rakuljic2, Phil Brown3, Todd Weigandt2, Qicheng Yu1, Donald Paterson1, Corey Petersen2, Jeffrey Gealow1 An
ISSCC 2017
Session 16
Data Converters
A 10b DC-to-20GHz Multiple-Return-to-Zero DAC with >48dB SFDR
towards mm-wave frequencies has increased the demand for UWB DACs with minimal spurious emissions. At mm-wave, intra-DAC dynamic timing and data errors consume a significant portion of the clock period, degrading SFDR. P
ISSCC 2017
Session 16
Data Converters
An 8GS/s Time-Interleaved SAR ADC with Unresolved Decision Detection Achieving -58dBFS Noise and 4GHz Bandwidth in 28nm CMOS
Bernd Wuppermann1, Charles Wu1, Cheongyuen W. Tsang1,3, Robert Neff1, Ken Nishimura1 Keysight Technologies, Santa Clara, CA 1 now with Apple, Cupertino, CA 3 now with Adecco, Mountain View, CA compared using an XNOR gate
ISSCC 2017
Session 16
Data Converters
A 5mW 7b 2.4GS/s 1-then-2b/cycle SAR ADC with Background Offset Calibration
Wireless communication systems and Ethernet networks call for moderateresolution GS/s energy-efficient ADCs. While previous work [1] shows that the multi-bit per cycle SAR ADC can achieve low power due to various hardwar
ISSCC 2017
Session 16
Data Converters
A 330mW 14b 6.8GS/s Dual-Mode RF DAC in 16nm FinFET Achieving -70.8dBc ACPR in a 20MHz Channel at 5.2GHz
Bob Verbruggen, John Mcgrath, Diarmuid Collins, Marites De La Torre, Pierrick Gay, Patrick Lynch, Peng Lim, Anthony Collins, Brendan Farley Xilinx, Dublin, Ireland Direct-RF synthesis has gained increasing attention in r
ISSCC 2017
Session 16
Data Converters
A 9GS/s 1GHz-BW Oversampled Continuous-Time Pipeline ADC Achieving -161dBFS/Hz NSD
front-end by a switchedcapacitor circuit and all internal signals are processed in discrete-time (DT) even though the front-end sampler introduces artifacts such as aliasing, noise folding, and high-peak ADC driving curr
ISSCC 2017
Session 16
Data Converters
A 13b 4GS/s Digitally Assisted Dynamic 3-Stage Asynchronous Pipelined-SAR ADC
Conrado Mesadri1, Ali Boumaalif3, John Mcgrath3, Umanath Kamath1, Ronnie De Le Torre1, Alvin Manlapat1, Daire Breathnach3, Christophe Erdmann1, Brendan Farley1 Xilinx, Dublin, Ireland Xilinx, San Jose, CA 3 Xilinx, Cork,
ISSCC 2016
Session 27
Data Converters
A 0.076mm2 12b 26.5mW 600MS/s 4×-Interleaved Subranging SAR-ΔΣ ADC with On-Chip Buffer in 28nm CMOS switch, is parasitic sensitive. Scaling of the LSB capacitance is therefore dictated by the parasitic capacitance of a minimum size switch instead of kT/C noise requirements. In deep-submicron technologies, this usually leads to a significantly larger core area with respect to a CR-DAC.
competitive core area a segmented SAR-DAC architecture is adopted using a CSDAC for the 4 MSBs and a CR-DAC for the remaining 6 LSBs (Fig. 27.8.2). The parasitic insensitive 6 LSBs can be scaled down as in a conventional
ISSCC 2016
Session 27
Data Converters
A 10b 2.6GS/s Time-Interleaved SAR ADC with Background Timing-Skew Calibration
Recent radio architectures, such as WiGig and 5G, require ADCs with bandwidth beyond 1GHz and ENOB of 6-to-8b while retaining excellent power efficiency for long battery life. Therefore, many time-interleaved SAR ADCs ar
ISSCC 2016
Session 27
Data Converters
A 4GS/s 13b Pipelined ADC with Capacitor and Amplifier Sharing in 16nm CMOS
Giuseppe Cusmai1, Sha-Ting Lin3, Cheng-Hsun Yang3, Gregory Unruh1, Sunny Raj Dommaraju1, Mo M. Zhang1, Po Tang Yang3, Wei-Ting Lin3, Xi Chen1, Dongsoo Koh1, Qingqi Dou1, H. Mohan Geddada1, Juo-Jung Hung1, Massimo Brandol
ISSCC 2016
Session 27
Data Converters
A 4GS/s Time-Interleaved RF ADC in 65nm CMOS with 4GHz Input Bandwidth
Phillip Elliott2, Bill Foley1, Roy Mason2, Vikas Singh3, Xuejin Wang2 Maxim Integrated Products, North Chelmsford, MA, Maxim Integrated Products, Fort Collins, CO, 3 Maxim Integrated Products, San Jose, CA 1 2 The perfor
ISSCC 2016
Session 27
Data Converters
A 0.35mW 12b 100MS/s SAR-Assisted Digital Slope ADC in 28nm CMOS Chun-Cheng Liu
In recent years, the operation speed of SAR ADCs has improved with the scaling of CMOS technology. SAR ADCs achieve a few hundreds of MS/s with 8-to-10b resolution. The SNR of high-speed SAR ADCs is mainly dominated by c
ISSCC 2016
Session 27
Data Converters
Area-Efficient 1GS/s 6b SAR ADC with ChargeInjection-Cell-Based DAC
To support growing data bandwidths, high-speed moderate-resolution ADCs have become vital for high-speed serial links. Interleaved SAR ADCs achieve high sampling speeds and good energy efficiency. However a challenge is
ISSCC 2016
Session 27
Data Converters
An Oversampling SAR ADC with DAC Mismatch Error Shaping Achieving 105dB SFDR and 101dB SNDR over 1kHz BW in 55nm CMOS
The successive-approximation-register (SAR) architecture is well-known for its high power efficiency in medium-resolution A/D conversions. Together with time interleaving, it can challenge the regime of flash ADCs in hig
ISSCC 2016
Session 27
Data Converters
A 12b 2GS/s Dual-Rate Hybrid DAC with Pulsed Timing-Error Pre-Distortion and In-Band Noise Cancellation Achieving >74dBc SFDR up to 1GHz in 65nm CMOS
A dual-rate hybrid DAC is proposed in [1] that shows a path toward high speed/linearity in scaled technology. In this hybrid architecture, the resolution of the DAC is achieved through an oversampled LSB path, while its
ISSCC 2016
Session 15
Data Converters
A 22.3b 1kHz 12.7mW Switched-Capacitor ΔΣ Modulator with Stacked Split-Steering Amplifiers
West Silicon EURL, Hottot les Bagues, France 1 2 Efforts to improve the resolution and power-efficiency of ADCs continue unabated, as is well documented in [2]. Although the number of new switchedcapacitor (SC) ADC publi
ISSCC 2016
Session 15
Data Converters
A 1.65mW 0.16mm2 Dynamic Zoom-ADC with 107.5dB DR in 20kHz BW
stereo channels to achieve effective acoustic noise and echo cancellation, thus demanding ADCs with low power and minimal die area. Zoom-ADCs should be well suited for such applications, since they combine compact and en
ISSCC 2016
Session 15
Data Converters
A 160MHz-BW 72dB-DR 40mW Continuous-Time ΔΣ Modulator in 16nm CMOS with Analog ISIReduction Technique
baseband ADC of an LTE-A receiver. To boost user throughput and increase network capacity, CT-DSMs will need to increase signal bandwidth (BW) while maintaining sufficient dynamic range (DR) and good power efficiency. Fo
ISSCC 2016
Session 15
Data Converters
A 930mW 69dB-DR 465MHz-BW CT 1-2 MASH ADC in 28nm CMOS
Cambridge, MA 1 2 The width of RF bands commonly used for cellular telecommunications has grown from 35-to-75MHz for 2G/3G/4G platforms to 100-to-200MHz for today’s LTE, and the desire for relaxed image-rejection filteri
ISSCC 2016
Session 15
Data Converters
A 280µW 24kHz-BW 98.5dB-SNDR Chopped Single-Bit CT ΔΣM Achieving <10Hz 1/f Noise Corner Without Chopping Artifacts
IIT Madras, Chennai, India Many industrial applications require high-resolution ADCs whose low-frequency performance is important. CTDSMs are attractive due to their implicit antialiasing and resistive inputs. However, t
ISSCC 2016
Session 15
Data Converters
A 1V 77dB-DR 72dB-SNDR 10MHz-BW 2-1 MASH CT ΔΣM
DEE, FCT, Universidade NOVA de Lisboa, Caparica, Portugal, CTS-UNINOVA, Caparica, Portugal 1 2 ΔΣM performance can be improved by using MASH or SMASH structures to obtain higher-order noise shaping [1]. They have better
ISSCC 2016
Session 15
Data Converters
A 2.2GHz Continuous-Time ΔΣ ADC with -102dBc THD and 25MHz BW
Shagun Bajoria1, Jan Niehof1, Robert Rutten1, Bert Oude-Essink2, Franco Fritschij2, Jagdip Singh2, Gerard Lassche2 NXP Semiconductors, Eindhoven, The Netherlands, Catena Microelectronics, Delft, The Netherlands 1 2 The t
ISSCC 2016
Session 15
Data Converters
A 24.7mW 45MHz-BW 75.3dB-SNDR SARAssisted CT ΔΣ Modulator with 2nd-Order Noise Coupling in 65nm CMOS
Technology advancement has recently made it attractive to replace the flash quantizer (QTZ) in a multibit ΔΣ modulator by an asynchronous successiveapproximation-register (ASAR) QTZ to improve the overall power efficienc
ISSCC 2015
Session 26
Data Converters
A 2.6b/cycle-Architecture-Based 10b 1.7GS/s 15.4mW 4×-Time-Interleaved SAR ADC with a Multistep Hardware-Retirement Technique
(TI) structures, the conversion rates of ADCs have greatly improved, which has inevitably increased power consumption. Despite the advantages of TI structures, power consumption is increased due to the stricter matching
ISSCC 2015
Session 26
Data Converters
A 5GS/s 150mW 10b SHA-Less Pipelined/SAR Hybrid ADC in 28nm CMOS
Rong Wu1, Hemasundar M. Geddada1, Yen-Jen Ko2, Yen Ding2, Chun-Sheng Huang2, Wei-Ta Shih2, Ming-Hung Hsieh2, Wei-Te Chou1, Tianwei Li1, Ayaskant Shrivastava1, Yi-Chun Chen1, Juo-Jung Hung1, Giuseppe Cusmai1, Jiangfeng Wu
ISSCC 2015
Session 26
Data Converters
A 5.5mW 6b 5GS/s 4×-Interleaved 3b/cycle SAR ADC in 65nm CMOS
Seng-Pan U1,2, R. P. Martins1,3 University of Macau, Macao, China, Synopsys, Macao, China, 3 Instituto Superior Tecnico, Universidade de Lisboa, Portugal 1 2 Communication devices such as 60GHz-band receivers and serial