Systems and methods for converting an analog machine learning output signal into a digital signal

A system for an Analog-to-Digital Converter (ADC) comprising:

• a switch module that receives an analog neural network output signal from an analog crossbar array network and outputs a first time interleaved analog neural network output signal to a first capacitive path and outputs a second time interleaved analog neural network output signal to a second capacitive path;
• a first capacitor and a second capacitor, which are separately coupled to the first capacitive path and the second capacitive path, respectively;
• a first trigger that receives the first time interleaved analog neural network output signal and a second trigger that receives the second time interleaved analog neural network output signal;
• a logic gate that receives the outputs of the first trigger and the second trigger and generates a frequency signal;
• and
• a digital filter that receives the frequency signal and a system clock and generates an n-bit digital word proportional to the frequency signal.

A system for an Analog-to-Digital Converter (ADC) for an analog deep learning system comprising:

• one or more processors;
• and
• a non-transitory computer-readable medium or media comprising one or more sets of instructions which, when executed by at least one of the one or more processors, causes steps to be performed comprising:
• receiving an analog neural network output signal from an analog crossbar array network, wherein the analog neural network output signal is based on programming of a matrix of memristor devices within the analog crossbar array network;
• time interleaving the analog neural network output signal by a switch module between two separate capacitive paths based on a first capacitor and a second capacitor, respectively;
• coupling each of the two separate capacitive paths to separate inverters;
• generating a frequency signal by coupling outputs of the separate inverters to a logic gate;
• and
• generating, by a digital filter, an n-bit digital word proportional to the frequency signal by coupling the frequency signal and a system clock CLK input to the digital filter.