Sense amplifier
AssigneeMediatek Inc.
InventorsChia-Wei Wang, Shu-Lin Lai, Yi-Te Chiu
Life of this patent
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Abstract
A sense amplifier for reading a via Read-Only Memory (Via-ROM) is provided. The sense amplifier includes a read circuit, an adaptive keeper circuit and a leakage monitor circuit. The read circuit is connected to the via-ROM. The adaptive keeper circuit is connected to the read circuit. The leakage monitor circuit is connected to the adaptive keeper circuit for forming a current mirror, such that the adaptive keeper circuit compensates a read voltage of a memory cell whose via is opened when a bit-line leakage is happened.
Claims15
A sense amplifier, for reading a via Read-Only Memory (Via-ROM), comprising:
- a read circuit connected to the via-ROM;
- an adaptive keeper circuit connected to the read circuit;
- a leakage monitor circuit connected to the adaptive keeper circuit for forming a current mirror, such that the adaptive keeper circuit compensates a read voltage of a memory cell whose via is opened when a bit-line leakage is happened;
- wherein the current mirror is formed by a part of the leakage monitor circuit and a part of the adaptive keeper circuit;
- and
- another part of the leakage monitor circuit and the read circuit are substantially the same.
A sense amplifier, for reading a via Read-Only Memory (Via-ROM), comprising:
- a read circuit connected to the via-ROM;
- a hybrid keeper circuit connected to the read circuit, wherein the hybrid keeper circuit includes:
- a static keeper circuit;
- and
- an adaptive keeper circuit, wherein the static keeper circuit and the adaptive keeper circuit are connected in parallel;
- and
- a leakage monitor circuit connected to the adaptive keeper circuit for forming a current mirror, such that the adaptive keeper circuit compensates a read voltage of a memory cell whose via is opened when a bit-line leakage is happened.
A sense amplifier, for reading a via Read-Only Memory (Via-ROM), comprising:
- a read circuit connected to the via-ROM;
- a static keeper circuit connected to the read circuit;
- a leakage monitor circuit connected to the read circuit for forming a current mirror, such that a read voltage of a memory cell whose via is opened is compensated when a bit-line leakage is happened;
- wherein the current mirror is formed by a part of the leakage monitor circuit and a part of the read circuit;
- and
- another part of the leakage monitor circuit and another part of the read circuit are substantially the same.
Dependencies are inferred from the claim text.