Methods and systems for low noise operation of analog in memory compute MAC arrays
OwnerVishal Sarin, Biprangshu Saha +3inventors
InventorsVishal Sarin, Biprangshu Saha, Sankha Saha, Vikram Kowshik, Sang T. Nguyen
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Abstract
A matrix multiplication and addition (MAC) operating system is described where different cell currents flowing through different cells in a matrix for different PWM time intervals can be integrated and converted into a numeric value for the cumulative charge. The numeric value of the cumulative charge computed by the ADC is equivalent to MAC operations over multiplicity of cells. The operation is inherently error prone due to parasitic coupling effects from the switching of the memory cells in the array. The presented system minimizes the errors due to parasitic coupling through memory array.
Claims14
An ADC system is described which reduces analog to digital conversion errors and is comprised of:
- a PWM (pulse width modulator) circuit providing various pulse-widths to a multiplicity of flash cells to charge or discharge different amounts of electric charge depending on a Control Gate (CG) bias and a pulse-width of a respective PWM pulse on a cell.
Dependencies are inferred from the claim text.