Analog-to-digital converter having an excellent signal-to-noise

Details Analog-to-digital converter having an excellent signal-to-noise Analog-to-digital converter having an excellent signal-to-noise

1988-09-26

1991-04-23

Shoop, Jr., William M.

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

341131, H03M 300

Patent

active

050103474

ABSTRACT:
An analog-to-digital converter includes an analog-to-digital converting circuit having at least an analog signal input terminal, an adder having a first input connected to the analog signal input terminal and a second input, and a comparator having an input coupled to receive an output of the adder and operating to generate a digital signal at a given sampling frequency. This digital signal is applied to the second input of the adder. There is further provided a noise generator including a one-bit white noise generator connected to receive the digital signal outputted from the comparator for generating a one-bit white noise signal, and a circuit coupled to the white noise generator for outputting a signal indicative of a difference between values of two white noise signals at two continuous sampling points. This difference signal is added to the input of the comparator.

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patent: 4761634 (1988-08-01), Yamaguchi et al.
patent: 4775851 (1988-10-01), Borth

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