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US 11,056,208 B1Granted
Data dependent sense amplifier with symmetric margining
AssigneeGlobalFoundries U.S. Inc.
InventorsBalaji Jayaraman, Ramesh Raghavan, Rajesh Reddy Tummuru, Toshiaki Kirihata
Life of this patent
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Abstract
The present disclosure relates to a data dependent sense amplifier with symmetric margining. In particular, the present disclosure relates to a structure including a bias generator circuit that is configured to provide symmetric margining between two logic states of a memory circuit.
Claims19
A structure comprising a bias generator circuit that is configured to provide symmetric margining between two logic states of a memory circuit across a threshold voltage shift,
- wherein the bias generator circuit comprises a multiplexer configured to select and output a true data line in response to programming a complement side of the memory circuit and to select and output a complement data line in response to programming a true side of the memory circuit.
A circuit, comprising:
- a bias generator circuit that is configured to provide symmetric margining between two logic states by generating a first bias signal and a second bias signal;
- and
- a sense amplifier and margining circuit which is configured to receive the first bias signal and the second bias signal to provide a control margin to balance a margining current in response to programming of a twin-cell transistor circuit.
A method comprising:
- programming one of a true side or a complement side of a twin-cell transistor circuit;
- generating a first bias signal and a second bias signal in a bias generator circuit in response to the programming one of the true side or the complement side of the twin-cell transistor circuit;
- receiving the first bias signal and the second bias signal at the sense amplifier and margining circuit;
- and
- generating a symmetric margin current in the sense amplifier and margining circuit across a threshold voltage shift of the twin-cell transistor circuit in response to the sense amplifier and margining circuit receiving the first bias signal and the second bias signal.
2 more elements
Dependencies are inferred from the claim text.