TsungTsung--HsienHsien LinLin
Research HighlightResearch Highlight
林宗賢
GIEE/NTUApril 2011
TsungTsung--HsienHsien LinLin
Research Theme•• Technology Innovator for IOT/M2M ApplicationsTechnology Innovator for IOT/M2M Applications
Sensors/Electrodes
DSP/Controller
ADC/DAC
AnalogCircuits
WirelessTransceiver
Bio‐Medical Applications– Sensor/elect. interface circuits (low‐noise low‐power)
– Sensors in CMOS ckt.
Communication Ckt.– Focus on low power, high energy efficiency
– Wireless for bio‐med. systems
Mixed‐Signal Ckt. Tech.– Delta‐sigma ADC– PLL, DLL, CDR, DCC– Digitally‐assisted analog design
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TsungTsung--HsienHsien LinLin 3
Recent Research ProjectsRecent Research Projects11
長距離千億位元的乙太網路系統晶片設計子計畫四:應用於長距離一千億位元乙太網路之接收機解多工器與時脈資料回復電路
國科會100/5~103/7
22 以病人為中心的無線醫療環境-腦與心的對話子計畫七:應用於心腦對談之低功率無線生醫收發機國科會
100/5~103/7
33 Low‐power Circuit Techniques for Intelligent Sensor Nodes Intel‐NTU100/1~
44 毫米波互補金氧半導體百億位元無線傳收系統 國科會99/11~100/7
55 前瞻生醫電子晶片開發與醫療系統整合分項一:低功率無線傳輸經濟部科專98/9~101/8
66 台大-聯發科合作研究計畫子計畫:VCO‐based Delta‐sigma Modulator Design聯發科95/7~起
77 心衰竭病患生醫檢測系統晶片及無線感測網路系統之設計及製作子計畫四 :生醫微感測器介面電路系統晶片之研究國科會
98/8~100/7
88 運用數位輔助智產元件之軟體無線收發機子計畫四:數位輔助、多規格連續時間型三角積分類比數位轉換器設計國科會
97/8~100/7
(Project 2, 5, 7: 跨領域生醫研究計畫)
TsungTsung--HsienHsien LinLin
BioBio--Medical Wireless TransceiverMedical Wireless Transceiver• Operate at low power• Aim for high energy efficiency• Support wide data rate range• Explore novel architectures
TsungTsung--HsienHsien LinLin 5
BioBio--Medical Wireless Transceiver (1)Medical Wireless Transceiver (1)
• Operate at the 400-MHz band• Uplink: FSK/PSK sensor data• Downlink: ASK command signal
Super-RegenerativeDemodulator
400MHz ASK RX
400MHz FSK/PSK TX
TX Data
LNA
Driver
SensorData
CommandSignal
Implant Device (IMD)
Body Air
Skin
ASK TX
External Device (EXD)
FSK/PSKModulator
Super-RegenerativeDemodulator
400MHz ASK RXLNA
Driver
400MHz VCO FSK/PSK RX
RX Data
• Application scenario: asymmetrical data communication
TsungTsung--HsienHsien LinLin 6
BioBio--Medical Wireless Transceiver (2)Medical Wireless Transceiver (2)• Wide-Band PLL-Based G/FSK TX• Breakthrough: solve problems in conventional PLL-based TXs⇒ enable higher data rate
• IEEE JSSC, 9/2009
TsungTsung--HsienHsien LinLin 7
BioBio--Medical Wireless Transceiver (3)Medical Wireless Transceiver (3)• Phase-Switching-Based PSK TX• Breakthrough: best energy efficiency for non-UWB TXs• IEEE T-MTT, 10/2009
0.01 0.1 1 10 100 10000.1
1
10
100
Narrow-bandModulation
Impulse-UWB
Chae, ISSCC08[2]
Monlar, CICC04[17]
Chee, VLSI06[14]
1pJ/bit10pJ/bit
Wong, ISSCC08[18]
Cook, ISSCC06[12]
Bohorquez, VLSI08[15]
Zarlink, ZL70081[13]
Panitantum, CICC08[17]
Matei, CICC08[4]
This work
10nJ/bit 1nJ/bit 100pJ/bit
Pow
er C
onsu
mpt
ion
(mW
)
Data rate (Mbps)
TsungTsung--HsienHsien LinLin
BioBio--Medical Wireless Transceiver (4)Medical Wireless Transceiver (4)• Super-Regenerative ASK RX with a ΔΣ Pulse-Width Digitizer• Breakthrough: achieve best demodulation accuracy• IEEE JSSC, 10/2010
[1] VLSI Sym’08; [2] ISSCC’06; [3] ISSCC’05
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TsungTsung--HsienHsien LinLin
MixedMixed--Signal CircuitSignal Circuit• Delta-sigma modulator design
• Digitally-assisted compensation/calibration• Multi-mode operation• Quadrature modulator
• PLL• High-performance ΔΣ fractional-N PL• Calibration• Fast-locking
• Duty-cycle correction circuits• Clock and data recovery circuits
TsungTsung--HsienHsien LinLin 10
MixedMixed--Signal Circuit (1)Signal Circuit (1)• Quadrature Multi-band Delta-Sigma ADC with Mismatch Shaping• Breakthrough: propose a digital Mismatch Shaping circuit to
address I/Q mismatch issue; support tri-band applications• IEEE JSSC, 2011 (minor revision)
Pseudo-randomQuadrature Mismatch Shaping
QuadratureBandpass2nd CIFB
Loop FilterH(s)
_
IDWA
4YI,PQMS
YQ,PQMS
YI,IDWA
YQ,IDWA
ComplexDAC
VI (t)
VQ (t) _
FSCKQ
CKIDWACKPQMS
CKDAC
PQMSCLKCLK
I-1st OpAmpI-1st OpAmp
I-DAC & Digital Logic I-DAC & Digital Logic
Flash
Comparator
Flash
Comparator
Cross-Coupling RCCross-Coupling RC
Measurement BufferMeasurement Buffer
I-2nd OpAmpI-2nd OpAmp
Q-DAC & Digital Logic Q-DAC & Digital Logic
Q-1st OpAmpQ-1st OpAmp Q-2nd OpAmpQ-2nd OpAmp
TsungTsung--HsienHsien LinLin 11
MixedMixed--Signal Circuit (2)Signal Circuit (2)• Phase-Compensation Technique for Fast-Locking PLLs• Breakthrough: significantly reduces the locking time of a PLL• IEEE JSSC, 6/2010
This work
Bandwidth switching
Trigger signal
Conventional
TsungTsung--HsienHsien LinLin 12
MixedMixed--Signal Circuit (3)Signal Circuit (3)• Quantization-Noise Suppression Tech. for ΔΣ Fractional-N PLLs• Breakthrough: effectively suppresses the QN in a ΔΣ FNPLL• IEEE Symposium on VLSI Circuits, 6/2011 (accepted)
QNS enabled
w/o QNS
~30dB improvement
TsungTsung--HsienHsien LinLin
BioBio--Medical/Sensor Medical/Sensor -- IntroductionIntroduction• Sensors in CMOS• Sensor/electrode interface circuit• Low-noise low-power analog signal processing circuit
TsungTsung--HsienHsien LinLin 14
BioBio--Medical/Sensor Application (1)Medical/Sensor Application (1)• Bandgap-Free CMOS Temperature Sensor• Breakthrough: temperature sensor with best FoM ever reported• IEEE Symposium on VLSI Circuits, 6/2011 (accepted)
(*FOM = energy per conversion × resolution)
D[8:0]VPTAT
VDAC ControllerSAR−
+
RST CLKIB
AV
BiasGenerator
IB
IB
BGR free ADCPTAT voltage generator
ACRS DAC
TsungTsung--HsienHsien LinLin 15
BioBio--Medical/Sensor Application (2)Medical/Sensor Application (2)• DNA Detection SoC in CMOS Bio-MEMS platform• Collaborate with Prof. 呂學士, Prof. 林致廷, and CIC• Breakthrough: highly-integrated DNA detection chip in CMOS• IEEE Symposium on VLSI Circuits, 6/2011 (accepted)
Cantilever‐BeamDNA Sensor
Readout Interface
ProgramSRAM
R/TXPOR
MCUCORE
Cantilever‐BeamDNA Sensor
Readout Interface
ProgramSRAM
R/TXPOR
MCUCORE
TsungTsung--HsienHsien LinLin 16
BioBio--Medical/Sensor Application (3)Medical/Sensor Application (3)‧以病人為中心的無線醫療環境-腦與心的對話 (NSC project)
• Sensors/electrodes development
• High-performance EEG/ECK recording
• Information processing and extraction
• Efficient data communication
• Energy harvesting and power management
Body Info
DSP Hub
Bio Sensors ! "
!"
Body Info DSP
Sensor Node
Patient‐Centric Medical Sensor Network(Cloud @ Hospital)
Existed Wireless Std.(BT, Wifi, GSM, 3G)
SensorAnalog Frontend
DSPWireless Interface
!"
Bio‐Sensors
mini‐USB Interface
Intelligent Biomedical DSP
Wireless Interface
Research collaboration:Research collaboration:
TsungTsung--HsienHsien LinLin
Summary
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•• Technology Innovator for IOT/M2M ApplicationsTechnology Innovator for IOT/M2M Applications
• Research focus:• Energy-efficient wireless communication• Mixed-signal circuit techniques• Bio-medical applications
• Seeking collaboration on bio-medical related research topics
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