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Although modern analog placement algorithms aimed to minimize area and wirelength while satisfying symmetry, proximity, and other placement constraints, the generated layout does not reflect the circuit performance very well because of the routing-induced parasitics on the critical current/signal paths. To simultaneously consider symmetry, wirelength, area utilization, and current/signal paths during...
Although modern analog placement algorithms aimed to minimize area and wirelength while satisfying symmetry, proximity, and other placement constraints, the generated layout does not reflect the circuit performance very well because of the routing-induced parasitics on the critical current/signal paths. This paper introduces the current-path constraints in analog placement, demonstrates their impact...
In this paper, we present a low dropout voltage regulator (LDO) which can be programmed to generate four output voltages (3.3 V, 2.5 V, 1.8 V, and 0 V) by the external control signals. Between the error amplifier and the power transistor, we place a simple buffer so that the power supply rejection (PSR) of LDO can be improved. The design specification of the maximum load current is 100 mA. The proposed...
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