Low-power offset-cancellation switched-capacitor correlated double sampling bandgap reference

Chen, Jianguang; Li, Gaolin; Yang, Cheng

doi:10.1049/el.2012.0857

Cited by 15 publications

(5 citation statements)

References 4 publications

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“…All switches are controlled by digital systems. The PGA provides full calibration for the sensor's inherent temperature drift and nonlinearity, and supports multiple temperature sensing methods [9,10]. The transfer function is shown in Eq.…”

Section: Analog Front Endmentioning

confidence: 99%

Signal processing system-on-chip design for biomedical applications

Wang

et al. 2017

IEICE Electron. Express

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In view of the high demand for low-power biomedical signalprocessing schemes occupying very less on-chip areas, we propose a lowpower highly integrated system-on-chip (SoC) design comprising a nonuniform biomedical sensing signal conditioning circuit and a 32-bit microprocessor. The proposed design is implemented using a 0.18 µm CMOS EFLASH process in an area of 4.2 mm 2 , and is applied in PPG, ECG and BP measurements. Experimental results show that our SoC design provides extremely good performances for sparse features of all three biomedical applications. The charge consumption is 25 mAh for three months, for an experimental board design including sleep current and junction leakage current.

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Section: Analog Front Endmentioning

confidence: 99%

Signal processing system-on-chip design for biomedical applications

Wang

et al. 2017

IEICE Electron. Express

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“…As shown in Fig. 2 (a), the improved structure consists of a temperature-dependent core, a SC CDS amplifier and some process calibration blocks [3]. The proportional to absolute temperature (PTAT) voltage is directly connected to the differential input of the SC CDS amplifier and the port VBE is linked to one plate of C3, as illustrate in Fig.…”

Section: Sc Cds Band-gap Voltage Referencementioning

confidence: 99%

All switched-capacitor realized piezoresistive pressure sensor interface chip for automotive TPMS

Chen

Zhu

Huang

et al. 2013

IEICE Electron. Express

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An all switched-capacitor structure realized piezoresistive pressure sensor interface chip for automotive tire pressure monitoring system is presented. The propose integrated circuit consists of high resolution incremental ADC, low noise switched-capacitor amplifier, high accuracy bangdap reference and low-power relaxation oscillator and other related blocks. Proposed structure was implemented in standard 0.35 µm CMOS process with an area of 6.1 mm 2 . The experimental results show that the signal conditioning method provides high accuracy of 1% of the full scale output with a battery voltage from 3.6 V to 2.1 V over the full military temperature range. The charge consumption results into 25 mAh in 10 years, including sleep mode and junction leakage current.

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“…Different topologies and methods for the IRRO, have been studied in the literature. These methods are classified as analog [8] and digital trimming [9]. However, these studies have common shortcomings; the resulting circuits suffer from large complexity, high power consumption, and relatively large area.…”

Section: Introductionmentioning

confidence: 99%

Spin-torque memristor based offset cancellation technique for sense amplifiers

Atasoyu

Altun

Özoğuz

et al. 2017

2017 14th International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design (

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Unpredictable threshold voltage changes of CMOS transistors cause input referred random offset (IRRO) in sense amplifiers. With the shrinkage of transistors in nano regime, it is being quite costly to cancel the offsets using conventional CMOS based techniques. Motivated by this fact, this study focuses on the IRRO cancellation with the aid of the spintorque memristor technology. Spin-torque memristors in series, compared to parallel, show less resistance and process variations. The resistance value of a spin-torque memristor is regarded as frozen when the current flow over the spin-torque memristor is lower than its critical switching current value. In fact, the proposed structure employs a non-destructive sensing scheme in order to achieve a relatively large sense margin by reducing the IRRO. Our main idea is to reduce or eliminate the IRRO by exploiting the spin-torque memristors for providing the current matching on the input transistors of the voltage comparator. In particular, the overwrite problem of the spin-torque memristor is solved by setting the critical switching current of the spin-torque memristor to be greater than a current value corresponding to the maximum IRRO value. We evaluate the IRRO cancellation technique on the proposed comparator or sense amplifier using 45nm predictive CMOS technology. Although sense amplifiers are targeted in this study, our technique can be applied to any analog amplifier suffering from the IRRO.

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Low-power offset-cancellation switched-capacitor correlated double sampling bandgap reference

Cited by 15 publications

References 4 publications

Signal processing system-on-chip design for biomedical applications

Signal processing system-on-chip design for biomedical applications

All switched-capacitor realized piezoresistive pressure sensor interface chip for automotive TPMS

Spin-torque memristor based offset cancellation technique for sense amplifiers

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