SYSTEMS AND METHODS FOR IMPLEMENTING ERROR-SHAPING ALIAS-FREE ASYNCHRONOUS FLIPPING ANALOG TO DIGITAL CONVERSION

摘要

A programmable, quantization error spectral shaping, alias-free asynchronous analog-to-digital converter (ADC) is provided. The ADC can be used for clock-less, continuous-time digital signal processing in receivers with modest Signal to Noise-plus-Distortion Ratio (SNDR) requirements and a tight power budget.

主权项

1. An apparatus comprising:
an integrator circuit comprising two integrator inputs and two integrator outputs; a first switch circuit configured to selectively couple one of a first apparatus input signal and a second apparatus input signal with one of a first integrator input and a second integrator input; a first comparator configured to:
receive a first output of the integrator circuit and a first reference signal; andgenerate a first comparator output signal; a second comparator configured to:
receive a second output of the integrator circuit and the first reference signal; andgenerate a second comparator output signal; and a second switch circuit configured to selectively couple one of a first apparatus output and a second apparatus output with one of the first comparator output signal and the second comparator output signal.