| 摘要 |
PROBLEM TO BE SOLVED: To provide an analog LSI for optical record reproducing apparatus with inputs/outputs corresponding to digital LSIs for CPU, etc., operative with a plurality of power voltages. SOLUTION: The analog LSI for the optical record reproduction process outputs signals to circuits operating from different voltages. It comprises a variable amplifier 11 processing an output signal with an applied different power voltage and a reference voltage corresponding to an operating voltage, a matching unit 12 for matching an output signal from the variable amplifier 11 with a signal level corresponding to the operating voltage with the applied different power voltage, a switch 13 for selecting either the output signal of the variable amplifier 11 or that of the matching unit 12 according to a control signal, and a buffer 14 for an output signal from the switch 13 operating with the applied different power voltage. The output from the buffer 14 is taken as a final one. COPYRIGHT: (C)2003,JPO
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