A low-power low-noise cmos for amplifier neural recording applications

Harrison, R.R.; Charles, C.T.

doi:10.1109/jssc.2003.811979

Cited by 1,457 publications

(403 citation statements)

References 21 publications

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“…2(c). (13,14) This structure allows the preamplifier to not only block the DC offset and voltage drift of the electrode but also integrate passive elements into the ASIC. The mid-band gain of the preamplifier is given by -C 1 /C 2 .…”

Section: Preamplifiermentioning

confidence: 99%

Design of an Analog Front End for a Bio-Inspired Auditory Sensor of a Novel Totally Implantable Cochlear Implant

2013

Sensors and Materials

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Key words: cochlear implant, totally implantable cochlear implant, artificial basilar membrane, piezoelectric sensor, low-noise low-power analog front end, biosensorIn this paper, we present a low-power and low-noise analog front end for a totally implantable cochlear implant using a bio-inspired auditory sensor. We used the "g m of I D " method to design an analog front end as the interface to an artificial basilar membrane with reduced flicker and thermal noises and low power consumption. We fabricated an Application-Specific Integrated Circuit (ASIC) chip with an analog front end using a 0.35 µm high-voltage CMOS process, showing a measured gain range of 40.35-62.94 dB with an input-referred noise of 5.32 µVrms at a power consumption of 272 µW per channel. As proof of concept demonstration, we used an analog front end with an artificial basilar membrane sensor, exhibiting an audio signal transduction suitable for a biomimetic artificial cochlear implant.

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Section: Preamplifiermentioning

confidence: 99%

Design of an Analog Front End for a Bio-Inspired Auditory Sensor of a Novel Totally Implantable Cochlear Implant

2013

Sensors and Materials

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“…Neural recording from the large-scale chronic multi-electrodes has been widely used in many biomedical applications [1,2,7,9]. The bioamplifier is one of the most important parts in this system.…”

Section: Introductionmentioning

confidence: 99%

“…Too much power dissipated by the amplifiers may damage the surrounding issues by heating. The electrode shape restricts the size of the each amplifier as low as 0.16 mm 2 [1]. Due to the electrode potential mismatch, the DC offset up to 1 V is cross the recording electrodes.…”

Section: Introductionmentioning

confidence: 99%

“…There are few DC offset suppression schemes adopted for on-chip integration in neural recording system. First method that uses a capacitor feedback network with ac coupling of input devices to reject the offset is very popular in designs [1,3,5]. The MOS-bipolar pseudo-resistor component in parallel with a capacitor feedback provides the very small low-cutoff frequency.…”

Section: Introductionmentioning

confidence: 99%

“…This paper presents a bioamplifier by means of a novel active DC offset suppression which takes the merits of capacitors feedback network configuration [1] and active low-frequency suppression configuration [2]. The midband gain is determined by the ratio of the capacitors, and size of capacitors is similar to the active cutoff-frequency suppression configuration without increasing the power and noise.…”

Section: Introductionmentioning

confidence: 99%

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Low noise amplifier with active feedback structure for implantable neural recording

Zhao

Shen

et al. 2013

IEICE Electron. Express

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A novel low-power, low-noise amplifier is described for biomedical and bioengineering brain neural recording applications. The bioamplifier achieves the best power-size tradeoff compared to the previous design. By means of a new active feedback configuration, the DC offset is rejected without the large capacitors. An active differentiator with an amplifier in the feedback path places a high-pass cutting frequency in the transfer function. The midband gain consists of the passive components, and is insensitive to the mismatch of process. The bioamplifier has been implemented in the 0.35-μm 2P4M CMOS process and occupies 0.052 mm 2 of die area. The current consumption of amplifier is 2 μA at ±1.5 V supply. The bioamplifier achieves a midband gain of 42 dB and a −3 dB bandwidth from 13 Hz to 10.5 kHz. The input-referred noise is 5.7 μV rms corresponding to an NEF of 3.1.

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Fully Integrated Systems for Neural Signal Recording: Technology Perspective and Low‐Noise Front‐End Design

Iniewski

2011

CMOS Biomicrosystems

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A low-power low-noise cmos for amplifier neural recording applications

Cited by 1,457 publications

References 21 publications

Design of an Analog Front End for a Bio-Inspired Auditory Sensor of a Novel Totally Implantable Cochlear Implant

Design of an Analog Front End for a Bio-Inspired Auditory Sensor of a Novel Totally Implantable Cochlear Implant

Low noise amplifier with active feedback structure for implantable neural recording

Fully Integrated Systems for Neural Signal Recording: Technology Perspective and Low‐Noise Front‐End Design

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