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Embedded analogue nonvolatile memory with feedback-controlled programming circuit on-chip

Embedded analogue nonvolatile memory with feedback-controlled programming circuit on-chip

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An analogue nonvolatile memory is presented, which is not only CMOS-compatible but also capable of storing analogue currents with a resolution of more than eight bits. The programming process is controlled by a hysteretic comparator on-chip, which stops the injection current automatically by negative feedback, regardless of the programming nonlinearity and device mismatches. With the simple, on-chip programming circuit, the proposed analogue memory is capable of storing currents ranging from 1 to 18 µA accurately with negligible variations across different memory cells.

Inspec keywords: feedback; random-access storage; comparators (circuits); storage management chips; CMOS integrated circuits

Other keywords: device mismatches; memory cells; negative feedback; programming nonlinearity; analogue memory; embedded analogue nonvolatile memory; feedback-controlled programming circuit on-chip; CMOS-compatible; on-chip programming circuit; programming process; hysteretic comparator on-chip; analogue currents

Subjects: Semiconductor storage; CMOS integrated circuits; Memory circuits; Other analogue circuits

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