74HC4046

Overview

Category

The 74HC4046 belongs to the category of integrated circuits (ICs).

Use

It is commonly used as a phase-locked loop (PLL) circuit.

Characteristics

• The 74HC4046 is a high-speed CMOS IC.
• It operates with a wide supply voltage range.
• It has low power consumption.
• The IC offers excellent noise immunity.

Package

The 74HC4046 is available in various package options, including DIP (Dual In-line Package) and SOIC (Small Outline Integrated Circuit).

Essence

The essence of the 74HC4046 lies in its ability to generate stable and precise frequency signals.

Packaging/Quantity

The IC is typically packaged in reels or tubes, with varying quantities depending on the manufacturer.

Specifications and Parameters

The following are some key specifications and parameters of the 74HC4046:

• Supply Voltage: 2V to 6V
• Operating Temperature Range: -40°C to +85°C
• Input Frequency Range: DC to 10MHz
• Output Frequency Range: DC to 10MHz
• Phase Detector Frequency Range: DC to 10MHz
• Lock Range: ±2.5% of VCO Center Frequency

Pin Configuration

The pin configuration of the 74HC4046 is as follows:

1. Phase Comparator 1 Input A
2. Phase Comparator 1 Input B
3. Phase Comparator 1 Output
4. Phase Comparator 2 Input A
5. Phase Comparator 2 Input B
6. Phase Comparator 2 Output
7. Voltage-Controlled Oscillator (VCO) Control Voltage
8. VCO Output
9. VCO Ground
10. VCO Power Supply
11. Reset
12. Lock Indicator
13. Phase Comparator 1 Ground
14. Phase Comparator 2 Ground

Functional Characteristics

The 74HC4046 offers the following functional characteristics:

• Two independent phase comparators
• Voltage-controlled oscillator (VCO)
• Lock indicator for PLL synchronization status
• Reset input for initialization

Advantages and Disadvantages

Advantages: - High-speed operation - Wide supply voltage range - Low power consumption - Excellent noise immunity

Disadvantages: - Limited frequency range - Sensitivity to external noise

Applicable Range of Products

The 74HC4046 is commonly used in applications that require frequency synthesis, clock recovery, and phase detection. It finds applications in communication systems, audio equipment, and digital circuits.

Working Principles

The working principle of the 74HC4046 involves comparing the phase and frequency of two input signals using the phase comparators. The VCO generates an output signal with a frequency proportional to the control voltage. The feedback loop adjusts the control voltage to maintain phase and frequency synchronization.

Detailed Application Field Plans

The 74HC4046 can be applied in various fields, including: - Frequency synthesizers - Clock recovery circuits - FM demodulation - Data synchronization - Phase-locked loop systems

Detailed Alternative Models

Some alternative models to the 74HC4046 include: - CD4046 - MC14046 - HEF4046 - HCF4046 - TC4046

5 Common Technical Questions and Answers

1. Q: What is the maximum operating frequency of the 74HC4046? A: The maximum operating frequency is 10MHz.

2. Q: Can the 74HC4046 operate with a supply voltage below 2V? A: No, the minimum supply voltage is 2V.

3. Q: How does the lock indicator function? A: The lock indicator provides a signal indicating whether the PLL is locked or not.

4. Q: What is the purpose of the reset input? A: The reset input initializes the internal circuitry of the 74HC4046.

5. Q: Can the 74HC4046 be used in high-noise environments? A: Yes, the IC has excellent noise immunity and can be used in such environments.

This encyclopedia entry provides an overview of the 74HC4046, including its category, use, characteristics, package options, specifications, pin configuration, functional characteristics, advantages and disadvantages, applicable range of products, working principles, detailed application field plans, alternative models, and common technical questions and answers.