| 摘要 |
PROBLEM TO BE SOLVED: To provide an F/F+1 prescaler that is stably in operation by a low consumed current at a low power supply voltage. SOLUTION: The size of MOS transistors(TRs) (50, 51) for frequency division ratio switching is selected greater than that of other differential stage MOS TRs (28-31) and differential signals (FBB, ZFBB, FBA, ZFAB) are delivered to a latch circuit at a 1st stage as feedback signals.
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