PROTECTION CIRCUIT FOR A/D CONVERSION SPEED AND DATA DAMAGE

摘要

The circuit automatically converts an input channel of A/D converter and checks an overrun occurred at A/D convert. It comprises : (i) a counter(110) incrementing a multiplexing channel of MUX; (ii) a comparator(120) multiplexing a start channel loaded in counter; (iii) a buffer(130) that permits start channel signal to counter and final channel +1 signal to comparator; (iv) a delay unit(150); (v) a multiplexing channel automatic increment unit(100); and (vi) an A/D convert overrun checking means(200) checking an overrun of an A/D convert according to an A/D convert ending signal and A/D convert value.