A linear voltage regulator for an implantable device monitoring system

Crepaldi, Paulo; Pimenta, Tales C.; Moreno, Robson Luiz; Rodriguez, Edgard Charry

doi:10.1007/s10470-010-9463-y

Cited by 8 publications

(2 citation statements)

References 30 publications

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“…Fluctuations on the input line voltage, load current and temperature variations may cause the circuit to deviate from its optimum operation bias point and even loose its linearity. Therefore, the power supply topology must assure minimum impacts on the linearity under those variations (Crepaldi et al, 2010). The impact of temperature variations in implantable devices is minimized once the body temperature is kept stable at approximately 37°C by an efficient biological feedback system (Mackowiak et al, 1992).…”

Section: Typical Implanted Device As a Smart Biological Sensormentioning

confidence: 99%

Low-voltage, low-power V independent voltage reference for bio-implants

Crepaldi

Pimenta

Moreno

et al. 2012

Microelectronics Journal

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Section: Typical Implanted Device As a Smart Biological Sensormentioning

confidence: 99%

Low-voltage, low-power V independent voltage reference for bio-implants

Crepaldi

Pimenta

Moreno

et al. 2012

Microelectronics Journal

Self Cite

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“…The voltage regulator is a key element of the PCC, which should exhibit high PSRR at carrier frequency, low standby current, low drop-out voltage, monolithic integration, and stable operation at low load current [10,11]. Moreover, the output of the voltage regulator is directly used as a reference voltage for analog blocks, including a 10-bit SAR ADC where high accuracy as well as fast line and load transient responses are also extremely important.…”

Section: Introductionmentioning

confidence: 99%

A fully on-chip LDO voltage regulator with 37 dB PSRR at 1 MHz for remotely powered biomedical implants

Majidzadeh

Silay

Schmid

et al. 2010

Analog Integr Circ Sig Process

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This article presents a fully on-chip low-power LDO voltage regulator dedicated to remotely powered wireless cortical implants. This regulator is stable over the full range of alternating load current and provides fast load regulation achieved by applying a time-domain design methodology. Moreover, a new compensation technique is proposed and implemented to improve PSRR beyond the performance levels which can be obtained using the standard cascode compensation technique. Measurement results show that the regulator has a load regulation of 0.175 V/A, a line regulation of 0.024%, and a PSRR of 37 dB at 1 MHz power carrier frequency. The output of the regulator settles within 10-bit accuracy of the nominal voltage (1.8 V) within 1.6 ls, at full load transition. The total ground current including the bandgap reference circuit is 28 lA and the active chip area measures 290 lm 9 360 lm in a 0.18 lm CMOS technology.

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Biomimetic Exogenous “Tissue Batteries” as Artificial Power Sources for Implantable Bioelectronic Devices Manufacturing

Yue,

Wang,

Xie

et al. 2024

Advanced Science

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Implantable bioelectronic devices (IBDs) have gained attention for their capacity to conformably detect physiological and pathological signals and further provide internal therapy. However, traditional power sources integrated into these IBDs possess intricate limitations such as bulkiness, rigidity, and biotoxicity. Recently, artificial “tissue batteries” (ATBs) have diffusely developed as artificial power sources for IBDs manufacturing, enabling comprehensive biological‐activity monitoring, diagnosis, and therapy. ATBs are on‐demand and designed to accommodate the soft and confining curved placement space of organisms, minimizing interface discrepancies, and providing ample power for clinical applications. This review presents the near‐term advancements in ATBs, with a focus on their miniaturization, flexibility, biodegradability, and power density. Furthermore, it delves into material‐screening, structural‐design, and energy density across three distinct categories of TBs, distinguished by power supply strategies. These types encompass innovative energy storage devices (chemical batteries and supercapacitors), power conversion devices that harness power from human‐body (biofuel cells, thermoelectric nanogenerators, bio‐potential devices, piezoelectric harvesters, and triboelectric devices), and energy transfer devices that receive and utilize external energy (radiofrequency‐ultrasound energy harvesters, ultrasound‐induced energy harvesters, and photovoltaic devices). Ultimately, future challenges and prospects emphasize ATBs with the indispensability of bio‐safety, flexibility, and high‐volume energy density as crucial components in long‐term implantable bioelectronic devices.

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A linear voltage regulator for an implantable device monitoring system

Cited by 8 publications

References 30 publications

Low-voltage, low-power V independent voltage reference for bio-implants

Low-voltage, low-power V independent voltage reference for bio-implants

A fully on-chip LDO voltage regulator with 37 dB PSRR at 1 MHz for remotely powered biomedical implants

Biomimetic Exogenous “Tissue Batteries” as Artificial Power Sources for Implantable Bioelectronic Devices Manufacturing

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