Current-mode Schmitt trigger using current output stages
AssigneesSaudi Arabian Oil Company, King Fahd University of Petroleum and Minerals
InventorsAbdulrahman Alshuhail, Hussain Alzaher, Alaa El-Din Hussein
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Abstract
A current-mode Schmitt Trigger includes a plurality of current output stages connected to a common supply voltage that powers the current-mode Schmitt Trigger, a main input on one of the current output stages that receives an input current, and a non-inverting output on a different one of the current output stages that is shorted to the main input to establish a positive closed-loop feedback and supplies a non-inverting output current as the input current. The current-mode Schmitt Trigger includes only active components.
Claims20
A current-mode Schmitt Trigger comprising:
- a plurality of current output stages connected to a common supply voltage that powers the current-mode Schmitt Trigger;
- a main input on one of the current output stages that receives an input current;
- and
- a non-inverting output on a different one of the current output stages that:
- is shorted to the main input to establish a positive closed-loop feedback;
- and
- supplies a non-inverting output current as the input current, wherein
- the current-mode Schmitt Trigger includes only active components.
A current output stage (COS) of a current-mode Schmitt Trigger including multiple ones of the COS connected to a common supply voltage that powers the current-mode Schmitt Trigger, the COS comprising:
- a plurality of complementary metal-oxide-semiconductors (CMOS) comprising an NMOS and a PMOS;
- an input between a gate of the NMOS and the PMOS of at least one of a first CMOS and a second CMOS among the plurality of CMOSs;
- a first output between a drain of the first CMOS and a drain of the second CMOS;
- and
- a second output between drains of a third CMOS and a fourth CMOS among the plurality of CMOSs, wherein
- the current-mode Schmitt Trigger comprises a main input on a first COS among multiple ones of the COS and a non-inverting output on a second COS among multiple ones of the COS, and
- the non-inverting output is shorted to the main input to establish a positive closed-loop feedback and supplies a non-inverting output current as the input current.
Dependencies are inferred from the claim text.