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Alternative Capacitor Implementation
Junction capacitance
– Parasitic diode leakage
– Voltage and temperature dependent
MOS capacitance
– MOS transistor in accumulation or inversion
– Alternatively: gate over diffusion
– Strongly non-linear
– Very high capacitance/area
– God for decoupling
Vertical parallel plate capacitor
– Matrix of wires exploiting vertical and lateral capacitance
– Ref. next slide
Stephan Henzler Mixed-Signal-Electronics 2012/13
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