Computing-in-memory circuit

A computing-in-memory circuit comprising:

• a computing element array for analog computation operations, the computing element array including:
• a plurality of memory cells;
• a first group of computing elements to provide capacitance for analog computation in response to an input vector, wherein the first group of computing elements receives data from the plurality of memory cells and the input vector, and
• a second group of computing elements to provide capacitance for quantization, wherein each computing element of the computing element array is based on a switched-capacitors circuit;
• and
• an analog-to-digital conversion circuit, the analog-to-digital conversion circuit including:
• a comparator having a signal terminal, a reference terminal, and a comparison output terminal, wherein the computing elements of the first group of computing elements are selectively coupled to the signal terminal and the reference terminal according to the input vector, and
• a conversion control unit coupled to the comparison output terminal to control coupling of a first number of computing elements from the second group of computing elements to the signal terminal and the reference terminal according to an output of the comparison output terminal.