CMOS prototype for retinal prosthesis applications with analog processing

Energy-Efficient Amplifiers Based on Quasi-Floating Gate Techniques

“…At the same time, large dynamic currents can be provided, since signals are capacitively coupled to the high impedance gate node. Due to these advantages, QFG transistors have found widespread use in the design of amplifiers but also in high-performance current mirrors [31][32][33][34][35], mixers [36,37], linearization of active resistors [38,39], DC offset cancellation servo loop circuits [40], bootstrapped switches [5], current conveyors [30,[41][42][43], Voltage Feedback Operational Amplifiers (VFOAs) [44], Current Feedback Operational Amplifiers (CFOAs) [45], buffers [46][47][48][49][50][51], rectifiers [35,52], capacitance multipliers [35], transconductors [30,[53][54][55], digital-based analog circuits [56], DC-DC converters [57], continuous-time filters [58][59][60][61], track and hold circuits [5], data converters [5,62], capacitive sensing interfaces [63], particle detectors [23] and retinal prosthesis [64], to name some representative applications.…”