Mills & Onello LLP
Resistorless bias current generation circuit
A bias current generating circuit generates a reliable and consistent bias current, irrespective of variation in applied power, process and temperature. In one embodiment, the bias current generator generates a bias current using a PTAT current generator and an IPTAT current generator comprising exclusively active circuit elements, for example transistors. No passive elements, such as resistors, are employed. The generated bias current is substantially a function of the respective aspect ratios of transistors of current paths of the device. In this manner, the resulting generated bias current has greatly reduced susceptibility to variation in applied power, process and temperature.
Samsung Electronics Co., Ltd.
G G
G05F G05F
inventional inventional
Weicheng Seunghoon
Zhang Lee