Inventors
Jiannan Huang, Patrick P Mercier
Publication date
2023/6/8
Patent office
US
Application number
17924180
Description
An analog to digital conversion (ADC) circuit includes a voltage-controlled oscillator (VCO)-based quantizer that receives a voltage input signal to be quantized and provides a digital output. A predictor samples the digital output, evaluates correlation between successive samples, and predicts a predicted input sample from the correlation to minimize voltage-to-frequency transfer of the VCO. A feedback loop L1 with a digital to analog converter (DAC) receives the predicted input sample, converts it and subtracts it from the voltage input signal. A feedback loop L2 adds the predicted sample to the digital output.
Scholar articles
J Huang, PP Mercier - US Patent App. 17/924,180, 2023