Analog to digital converter and method of calibrating same

Details Analog to digital converter and method of calibrating same Analog to digital converter and method of calibrating same

1979-11-21

1982-08-10

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

340347NT, 340347AD, 324130, H03K 1320

Patent

active

043440673

ABSTRACT:
A single slope analog to digital converter uses a DAC to trim the discharge current of a capacitor during calibration thereof. A method of calibrating the analog to digital converter is provided which iterates required steps to obtain a correct current setting within a short period of time. The analog to digital converter discharges a capacitor through a high impedance to obtain a linear discharge. The time to discharge the capacitor appears in a counter and is indicative of the voltage across the capacitor at the beginning of the discharge period once the analog to digital converter has been calibrated.

REFERENCES:
patent: 3631468 (1971-12-01), Spaid
patent: 3685048 (1972-08-01), Pincus
patent: 3737897 (1973-06-01), Cuthbert
patent: 4058808 (1977-11-01), Malaviya
patent: 4074260 (1978-02-01), Butler

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