Analog-to-digital converter

Details Analog-to-digital converter Analog-to-digital converter

1974-07-08

1976-06-29

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

340347AD, H03K 1320

Patent

active

039672700

ABSTRACT:
The disclosure describes an improved analog-to-digital converter which enables the use of a reference voltage having the same polarity as the input analog voltage being converted. The converter employs an operational amplifier having a capacitive feedback network, an inverting input, and a non-inverting input. The inverting input is periodically disconnected so that the output of the operational amplifier slews to a new value without substantially changing the voltage across the capacitive feedback network.

REFERENCES:
patent: 3566265 (1971-02-01), Reid
patent: 3566397 (1971-02-01), Walton
patent: 3599203 (1971-08-01), Conley
patent: 3733600 (1973-05-01), Hellwarth et al.
patent: 3737893 (1973-06-01), Belet et al.
patent: 3747089 (1973-07-01), Sharples
Walton, "Triple Ramp A-D Conv. With Reverse Direction Third Ramp," IBM Tech. Disc. Bulletin, vol. 11, No. 4, Sept. 68, pp. 384, 385.

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