A 0.5V, 11.3-&amp;#x03BC;W, 1-kS/s resistive sensor interface circuit with correlated double sampling

Ha, Hyunsoo; Suh, Yunjae; Lee, Seon-Kyoo; Park, Hong-June; Sim, Jae‐Yoon

doi:10.1109/cicc.2012.6330702

Cited by 14 publications

(9 citation statements)

References 10 publications

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“…This, however, comes at the cost of a higher FoM, which cannot be accepted in this low-power application. The other circuits, such as [99], have a comparable FoM to our design, but have a higher power consumption or did not optimize for temperature and voltage independence, which makes them less suitable for use in wireless sensor networks. The proposed topology makes a unique trade-off between power efficiency, accuracy and stability over supply voltage and temperature changes.…”

Section: Measurement Resultsmentioning

confidence: 99%

Temperature- and Supply Voltage-Independent Time References for Wireless Sensor Networks

Smedt

Gielen

Dehaene

2015

Analog Circuits and Signal Processing

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Section: Measurement Resultsmentioning

confidence: 99%

Temperature- and Supply Voltage-Independent Time References for Wireless Sensor Networks

Smedt

Gielen

Dehaene

2015

Analog Circuits and Signal Processing

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“…This dual-mode ROIC operates in the current mode or the resistive mode, according to characteristic resistance of gas sensors. Figure 8 shows measured ROIC characteristics in the range of 250 Ω–10 MΩ, where the normalized conversion error [ 12 ] was included together. The proposed ROIC operates with conversion error less than 0.8% in the medium-resolution mode.…”

Section: Measurement Resultsmentioning

confidence: 99%

“…In many cases, the resistance to voltage conversion utilizes the Wheatstone-bridge circuit [ 11 ], but its linearity is guaranteed only for narrow-range resistance change. Therefore, in order to support wide-range resistance change, it utilizes the resistor DAC for a reference resistance that is programmed to be approximately equal to initial value of the sensor resistance [ 12 ]. However, this becomes less accurate at a low resistance range where switch-on resistances are not negligible.…”

Section: Introductionmentioning

confidence: 99%

A Three-Step Resolution-Reconfigurable Hazardous Multi-Gas Sensor Interface for Wireless Air-Quality Monitoring Applications

Choi

Park

Lee

et al. 2018

Sensors

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This paper presents a resolution-reconfigurable wide-range resistive sensor readout interface for wireless multi-gas monitoring applications that displays results on a smartphone. Three types of sensing resolutions were selected to minimize processing power consumption, and a dual-mode front-end structure was proposed to support the detection of a variety of hazardous gases with wide range of characteristic resistance. The readout integrated circuit (ROIC) was fabricated in a 0.18 μm CMOS process to provide three reconfigurable data conversions that correspond to a low-power resistance-to-digital converter (RDC), a 12-bit successive approximation register (SAR) analog-to-digital converter (ADC), and a 16-bit delta-sigma modulator. For functional feasibility, a wireless sensor system prototype that included in-house microelectromechanical (MEMS) sensing devices and commercial device products was manufactured and experimentally verified to detect a variety of hazardous gases.

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“…Resistive sensor readout circuits based on CDS [10] or chopper stabilization [11] have been reported. Alternatively, the sensor response can be converted to a delay and resolved in the time-domain.…”

Section: Temperature Sensors and Readout Circuitsmentioning

confidence: 99%

A 15 <formula formulatype="inline"><tex Notation="TeX">$\mu{\rm W}$</tex></formula> 5.5 kS/s Resistive Sensor Readout Circuit with 7.6 ENOB

Ghanad

Green

Dehollain

2014

IEEE Trans. Circuits Syst. I

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A low power SAR logic-based resistive sensor readout circuit is proposed. A high sensitivity thermistor is used for local temperature measurements. The need for a low-noise front-end voltage amplifier is avoided by employing time-domain operation. In each operation step the sensor resistance is compared with the value of a reference resistive DAC which is implemented on chip. Therefore no stable, temperature compensated reference voltage is needed for operation. Furthermore the chip is operational with supply voltages ranging from 1.2 to 1.8 volts. Detailed analyses of the circuit gain and noise are provided. In addition, the effect of circuit topology on the noise performance is discussed. The effect of noise on accuracy of the circuit is also negligible due to resetting the charge-integrating capacitor after each comparison. A prototype chip is fabricated in 0.18-CMOS. The circuit dissipates 15 with 5.5 kS/s conversion rate from a 1.5 V supply. The complete interface circuit has 14 pJ/c-s figure of merit and 7.6 effective number of bits.Index Terms-ADC, integrating, low power, medical implants, noise, successive approximation register (SAR), sensor readout, time domain comparator.

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A 0.5V, 11.3-μW, 1-kS/s resistive sensor interface circuit with correlated double sampling

Cited by 14 publications

References 10 publications

Temperature- and Supply Voltage-Independent Time References for Wireless Sensor Networks

Temperature- and Supply Voltage-Independent Time References for Wireless Sensor Networks

A Three-Step Resolution-Reconfigurable Hazardous Multi-Gas Sensor Interface for Wireless Air-Quality Monitoring Applications

A 15 <formula formulatype="inline"><tex Notation="TeX">$\mu{\rm W}$</tex></formula> 5.5 kS/s Resistive Sensor Readout Circuit with 7.6 ENOB

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