Patent ID: 6509853
Filing Date: 2003-01-21
Classification: H03M

Abstract:
A subranging superconducting analog-to-digital converter (ADC) comprising: means for applying an analog input signal to an input coil having at least a first inductive section and a second inductive section;a first superconducting quantum interference device (SQUID), coupled to said first inductive section, responsive to said analog input signal for producing a first output signal; a first comparator responsive to said first output signal of the first SQUID and to a first clock signal for producing a first output signal which is coupled back to said input coil; a second superconducting quantum interference device (SQUID), coupled to said second inductive section, responsive to said analog input signal for producing a second output signal; and a second comparator responsive to said second output signal of the second SQUID and to a second clock signal for producing a second output signal which is coupled back to said input coil.