Analog to digital converter incorporating summing currents respo

Details Analog to digital converter incorporating summing currents respo Analog to digital converter incorporating summing currents respo

1992-04-13

1993-09-14

Williams, Howard L.

Coded data generation or conversion

Analog to or from digital conversion

With particular solid state devices

341136, 341161, H03M 144

Patent

active

052453421

ABSTRACT:
An analog to digital converter (200, 300, 400) comprises a sink current circuit (200, 438, 440, 442) responsive to an input voltage for generating at least two sink currents. A source current circuit (300, 404, 406, 408, 418, 420, 422, 456, 458, 460) for generating at least three weighted source currents is coupled to the sink current circuit at summing nodes (424, 426, 428) in order to produce at least two digital output signals (D0, D1, D2). A switching circuit (444, 446, 448) is coupled to the source current circuit for enabling selected source currents in response to the digital output signals.

REFERENCES:
patent: 4225854 (1980-09-01), Davis et al.
patent: 4305064 (1981-12-01), Davis
patent: 4379285 (1983-04-01), Dooley

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