Patent ID: 11893271
Assignee: INSTITUTE OF MICROELECTRONICS, CHINESE ACADEMY OF SCIENCES
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 7:
8. The computing-in-memory circuit according to claim 5, wherein the readout circuit comprises a first amplifier circuit, a second amplifier circuit, a current node, an AD converter, and an accumulator;
the first amplifier circuit is configured to amplify a current on a first bit line that a selected memory cell connects to obtain a first amplified current;
the second amplifier circuit is configured to amplify a current on a second bit line that the selected memory cell connects to obtain a second amplified current, wherein an amplification factor of the second amplifier circuit is different from an amplification factor of the first amplifier circuit;
the current node is configured to receive the first amplified current and the second amplified current to obtain a current of the selected memory cell;
the AD converter is configured to convert the current of the selected memory cell into a corresponding digital signal; and
the accumulator is configured to accumulate the digital signal corresponding to the current of each memory cell located in the same column together.