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This paper describes the importance of having a backchannel communication link between a microstimulator ASIC and an external control unit for complete safety closure and closed-loop power management. An example of the overall microstimulation system with backchannel communication link for an epiretinal implant is provided. Additionally, the backchannel(More)
This paper presents a low drop-out voltage regulator (LDO) suitable for input voltages twice the nominal operating voltage of the CMOS technology. High GBW and good DC accuracy in line and load regulation is achieved by using 3-stage error amplifiers. Two feedback loops are used to improve stability. High voltage compatibility is established by stacking two(More)
An experimental and numerical investigation was carried out on the performance of a single-wheel travelling over various kinds of loose soil, including dry sand, wet sand, and mud. The experiments were conducted using a testbed equipped with a displacement transducer, a torque sensor, etc., to get the information on sinkage, driving torque, and drawbar(More)
—This brief presents an ultralow-voltage multistage rectifier built with standard threshold CMOS for energy-harvesting applications. A threshold-compensated diode (TCD) is developed to minimize the forward voltage drop while maintaining low reverse leakage flow. In addition, an interstage compensation scheme is proposed that enables efficient power(More)