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A 13-bit 8-kS/s δ ∑ Readout IC Using ZCB Integrators with an Embedded Resistive Sensor Achieving 1.05-pJ/Conversion Step and a 65-dB PSRR
Li,Bing1; Na,Ji Ping2,3; Wang,Wei2,3; Liu,Jia2,3; Yang,Qian2,3; Mak,Pui In2,3
2019-04-01
Source PublicationIEEE Transactions on Very Large Scale Integration (VLSI) Systems
ISSN10638210
Volume27Issue:4Pages:843-853
AbstractThis paper reports on an energy-efficient \Delta -\Sigma readout IC (ROIC) with a high power-supply-rejection ratio (PSRR). The static power consumption is minimized by applying a zero-crossing-based (ZCB) circuit to implement switched-capacitor (SC) integrators, while the resistive sensor is embedded inside the circuit to reuse the bias current. Oversampling \Delta -\Sigma modulation also directly provides the digitized output, avoiding the need for a power-hungry instrumentation amplifier while preserving the linear settling behavior of the ZCB SC integrators. A dual-path bridge measurement AIDS in upholding PSRR of ROIC against bridge imbalance. Prototyped in 0.18-\mu \text{m} CMOS, the dual-path ROIC for the bridge measurement shows a nonlinearity of <400 ppm and an rms-noise-equivalent resolution of 13 bits at a conversion rate of 8 kS/s, corresponding to a figure of merit of 1.05-pJ/conversion step. The achieved noise-frequency-independent PSRR is 65 dB, and the supply and temperature sensitivities are 0.23%/V and 55 ppm/°C, respectively.
KeywordCMOS figure of merit (FoM) oversampling Δ-Σ modulation power-supply rejection ratio (PSRR) readout IC (ROIC) resistive sensor Wheatstone bridge zero-crossing-based (ZCB) integrator
DOI10.1109/TVLSI.2019.2895361
URLView the original
Language英语
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Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.College of Electronic Science and Technology,Shenzhen University,,Shenzhen,China
2.State Key Laboratory of Analog and Mixed-Signal VLSI,University of Macau,,Macao,China
3.Department of Electrical and Computer Engineering,Faculty of Science and Technology,University of Macau,,Macao,China
Recommended Citation
GB/T 7714
Li,Bing,Na,Ji Ping,Wang,Wei,et al. A 13-bit 8-kS/s δ ∑ Readout IC Using ZCB Integrators with an Embedded Resistive Sensor Achieving 1.05-pJ/Conversion Step and a 65-dB PSRR[J]. IEEE Transactions on Very Large Scale Integration (VLSI) Systems,2019,27(4):843-853.
APA Li,Bing,Na,Ji Ping,Wang,Wei,Liu,Jia,Yang,Qian,&Mak,Pui In.(2019).A 13-bit 8-kS/s δ ∑ Readout IC Using ZCB Integrators with an Embedded Resistive Sensor Achieving 1.05-pJ/Conversion Step and a 65-dB PSRR.IEEE Transactions on Very Large Scale Integration (VLSI) Systems,27(4),843-853.
MLA Li,Bing,et al."A 13-bit 8-kS/s δ ∑ Readout IC Using ZCB Integrators with an Embedded Resistive Sensor Achieving 1.05-pJ/Conversion Step and a 65-dB PSRR".IEEE Transactions on Very Large Scale Integration (VLSI) Systems 27.4(2019):843-853.
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