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U74HC4046A - PHASE LOCKED LOOP

General Description

comparator input.

Key Features

  • S.
  • Low Power Consumption.
  • Operating Power Supply Voltage Range: Digital Section 2.0 to 6.0 V VCO Section 3.0 to 6.0 V.
  • Up to 17 MHz (typ. ) Centre Frequency at VCC = 4.5 V.
  • Excellent VCO Frequency Linearity.
  • VCO-Inhibit Control For ON/OFF Keying and for Low Standby Power Consumption.
  • Minimal Frequency Drift.
  • Three Phase Comparators:.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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UNISONIC TECHNOLOGIES CO., LTD U74HC4046A PHASE LOCKED LOOP WITH VCO CMOS IC  DESCRIPTION The U74HC4046A is a phase-locked-loop circuit including a linear voltage-controlled oscillator (VCO), three different phase comparators (PC1, PC2 and PC3), a common signal input amplifier and a common SOP-16 comparator input. The signal can be directly coupled to large voltage signals or with a series capacitor coupled to small voltage signals. Small voltage signals can be kept within the linear region of the input amplifiers with a self-bias input circuit. The U74HC4046A and a passive low-pass filter form a second-order loop PLL. With a linear op-amp, the VCO achieves excellent linearity. The VCO requires an external capacitor and resistor.