Integrable analog-to-digital converter

Details Integrable analog-to-digital converter Integrable analog-to-digital converter

1985-02-14

1986-12-30

Roskoski, Bernard

Communications: electrical

Audible indication

Percussion-type sound producer

340347M, H03M 100

Patent

active

046332197

ABSTRACT:
An analog-to-digital converter includes a voltage divider (ST) having n series-connected resistors (R.sub.v ; v=1, 2, . . . n), divider points between the resistors (R.sub.v) and an end receiving a d-c reference voltage (U.sub.R) versus a base point potential, n identical comparators (K.sub.v) each having a first input receiving an analog signal to be processed, a second reference input each being connected to a respective one of the divider points, and an output, a common control logic circuit (LS) connected to the outputs of the comparators (K.sub.v) for furnishing a digital signal corresponding to the analog signal to be processed, each of the resistors (R.sub.v) being connected between one of the divider points which divider point is applied to that one of the comparators (K.sub.v), which is associated with a given (v.sup.th) output code, and another of the divider points assigned to the next lower output code, and each of the resistors (R.sub.v) having a resistance value satisfying the condition: ##EQU1## where I.sub.B is the maximum current flowing through the second reference inputs of said comparators, and U.sub.v is the desired value of the reference voltage at the comparators.

REFERENCES:
patent: 4099173 (1978-07-01), Zeskino et al.
patent: 4211999 (1980-07-01), Clark et al.
patent: 4217574 (1980-08-01), Anderson
patent: 4250492 (1981-02-01), Yamakino et al.
patent: 4449118 (1984-05-01), Dingwall et al.
patent: 4496935 (1985-01-01), Inoue et al.
IEEE Journal of Solid-State Circuits, vol. SC-17, No. 6, 12/1982, pp. 1113 to 1138.
Electronic Engineering, 8/1980, pp. 37 to 44.
Analog-to-Digital Conversion Techniques, 1968, pp. 10 to 12 and 409 to 412.

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