Subranging analog to digital converter

Details Subranging analog to digital converter Subranging analog to digital converter

1986-05-08

1988-03-22

Sloyan, T. J.

Communications: electrical

Audible indication

Percussion-type sound producer

324 99D, 340347M, 340347SH, H03M 142

Patent

active

047332174

ABSTRACT:
A subranging analog-to-digital converter is disclosed. A coarse analog-to-digital converter has an analog input terminal coupled to a source of analog signal, a digital output terminal, and a range indication output terminal. First and second fine analog-to-digital converters each have an analog input terminal coupled to the analog signal source, a range selection input terminal coupled to the range indication output terminal, and a digital output terminal. A combining circuit has input terminals coupled to the digital output terminals of the coarse and first and second fine analog-to-digital converters. The coarse analog-to-digital converter operates on every clock cycle, and the fine analog-to-digital converters operate alternately on every other clock cycle to produce a sequence of digital samples representing the analog signal, one for each clock cycle.

REFERENCES:
patent: 3597761 (1971-08-01), Fraschilla et al.
patent: 3820112 (1974-06-01), Roth
patent: 4345241 (1982-08-01), Takeuchi et al.
patent: 4398179 (1983-08-01), Kaneko
patent: 4456904 (1984-06-01), van de Grift
patent: 4542370 (1985-09-01), Yamada et al.
patent: 4571574 (1986-02-01), Krynicki
patent: 4612531 (1986-09-01), Dingwall et al.
A. G. F. Dingwall et al; "An 8-MHz CMOS Subranging 8-bit A/D Converter", Dec. 1985; IEEE Jour. of Solid State Circuits, vol. SC-20, No. 6, pp. 1138-1143.

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