UNISONIC TECHNOLOGIES CO.
, LTD U74HCT7046 PHASE LOCKED LOOP WITH VCO & LOCK DETECTOR CMOS IC „ DESCRIPTION The U74HCT7046 is phase-locked-loop circuit that comprise a linear voltage-controlled oscillator (VCO), two-phase comparators (PC1, PC2), a lock detector, a common signal input amplifier and a common comparator input.
The lock detector capacitor should be connected between pin 15(CLD) and pin 8(GND).
For a frequency range of 100kHz to 10MHz,the lock detector capacitor must be 1000pF to 10pF,respectively.
The signal can be directly coupled to large voltage signals, or with a series capacitor coupled to small signals.
Small voltage signals can be kept within the linear region of the inpu...

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