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Item type:Publication, Access status: without files , A 130NM ASIC for EMG signal acquisition to control a hand prosthetic(SciTePress, 2012); ; ; ; A mixed-signal chip in 130nm Technology is described. The chip acquires EMG signals from five differential inputs. The signals are amplified, multiplexed and digitized inside the developed chip. The ASIC is optimised for low power and low noise and is intended for application in medical implants. Furthermore, the chip provides a configuration options for several parameters for the analogue part of the chip. The chip has been tested by recording EMG signals from implanted Myo-Electrodes.Publicationtype: Conference Paper11 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Toward the optimal architecture of an ASIC for neurostimulation(SciTePress, 2012); ; ; Electrical Neurostimulation has been effective in several medical therapies and also for restoring physiological, sensory and neuromuscular deficits. The rectangular pulse waveform has been used as a standard shape for neural stimulation. However, it has been shown that non-rectangular waveforms provide a more energy-efficient neural stimulation. An ASIC has been developed composed of a stimulator, capable of driving several current waveforms, and an analog channel for biosignal acquisition. The design is implemented in 130 nm / 1.2 V CMOS technology, requiring a silicon area of 0.696 mm 2. Experimental results show that the stimulator can generate analog signals from a digital input of 8 bits. The output stage can drive up to ±9.8 μA, with a DNL and INL of 0.47 and 1.05 LSB, respectively. Its SFDR is 50.2 dB. And it consumes a maximum of 128.12 μW. The analog input channel presents a power consumption of 140 μW, a gain of 52.2 dB, a bandwidth of 0.5 - 1130 Hz and 10 μV rms of noise.Publicationtype: Conference Paper10