Automatic level control circuit for an ad converter

Details Automatic level control circuit for an ad converter Automatic level control circuit for an ad converter

H - Electricity

03

M

354/82

H03M 1/16 (2006.01) H03M 1/00 (2006.01) H04L 27/06 (2006.01) H04L 27/38 (2006.01)

Patent

CA 1263189

ABSTRACT The invention is an automatic level control circuit which is capable of controlling the reference level of an AD converter against fluctuctuations of input level without res- orting to the use of variable gain amplifiers. The invention comprises an AD converter for discriminating an input signal with respect to a plurality of reference levels to produce a decoded digital signal and an error digital signal, and a reference voltage generator responsive to the decoded digital signal and error digital signal for providing reference volt- ages to the AD converter. The reference levels assigned to the AD converter are controlled to optimum ones responsive to a fluctuation in the level of the input signal.

494588

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