US 11,720,127 B2
Amplifier and voltage generation circuit including the same
Suk Hwan Choi, Icheon-si (KR)
Assigned to SK hynix Inc., Icheon-si (KR)
Filed by SK hynix Inc., Icheon-si (KR)
Filed on Oct. 22, 2020, as Appl. No. 17/77,631.
Claims priority of application No. 10-2020-0088634 (KR), filed on Jul. 17, 2020.
Prior Publication US 2022/0019252 A1, Jan. 20, 2022
Int. Cl. G05F 1/575 (2006.01); G05F 1/46 (2006.01); G05F 1/445 (2006.01)
CPC G05F 1/461 (2013.01) [G05F 1/445 (2013.01); G05F 1/575 (2013.01)] 26 Claims
OG exemplary drawing
 
1. An amplifier comprising:
a first stage configured to receive a bias voltage and a control signal independent of the bias voltage, configured to detect and output a difference between a reference voltage and a feedback voltage according to the control signal and a bias current,
wherein the control signal is increased from a first level until an external voltage becomes equal to or more than a set level and the control signal transits to a second level when the external voltage becomes equal to or more than the set level, and
wherein an amount of the bias current is maintained according to the bias voltage until the control signal has the second level, and the amount of the bias current is forcibly increased when the control signal has the second level.