Apparatus and method for interfacing a transducer

Details Apparatus and method for interfacing a transducer Apparatus and method for interfacing a transducer

H - Electricity

03

M

328/173

H03M 1/56 (2006.01) H03M 1/00 (2006.01)

Patent

CA 1240370

Abstract of the Disclosure An analog-to-digital conversion technique utilizes an oscillator which provides a primary oscillating signal that drives a counter and that generates a derived signal having a frequency less than the primary signal. The derived signal is integrated for use in comparing against the threshold voltage defining the analog signal to be con- vented. The comparison of the integrated and the threshold signals provides a pulse width modulated signal which is related to the primary signal. The pulse width modulated signal gates the counter for generating a count at the rate established by the primary signal. This output can be com- municated to a microcomputer or other device.

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