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引用次数: 2
摘要
提出了一种低功耗、低噪声的CMOS ota放大器，可最大限度地减少电诱发复合动作电位(ECAP)测量中的刺激伪影(sa)。该放大器将集成到电刺激视网膜外视假体ECAP测量系统中。该放大器具有4种增益设置(50,60,70,80db)，带宽为7.4-9.9 kHz，输入参考噪声为5.6 muVrms (0.1-10 kHz)，静态电流仅为12.6 muA。该放大器使用高压0.35 μ m CMOS工艺进行仿真，并展示了关键性能指标的出色权衡。
A low-power and low-noise CMOS OTA-based amplifier which minimises stimulus artefacts (SAs) in electrically evoked compound action potential (ECAP) measurements is presented. The amplifier is to be incorporated into an electrical stimulation epi-retinal vision prothesis ECAP measurement system. The amplifier has four gain settings (50, 60, 70, 80 dB) over a 7.4-9.9 kHz bandwidth, an input-referred noise of 5.6 muVrms (0.1-10 kHz) and consumes only 12.6 muA quiescent current. The amplifier is simulated using a high voltage 0.35 mum CMOS process and demonstrates an excellent tradeoff of key performance measures.
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