MC74HC4046AFELG

Product Overview

• Category: Integrated Circuit (IC)
• Use: Phase-Locked Loop (PLL) with Voltage Controlled Oscillator (VCO)
• Characteristics: High-speed CMOS technology, low power consumption
• Package: SOIC-16 (Small Outline Integrated Circuit), Lead-Free
• Essence: The MC74HC4046AFELG is a versatile PLL IC that provides frequency synthesis and synchronization capabilities.
• Packaging/Quantity: Available in tape and reel packaging, 2500 units per reel.

Specifications

• Supply Voltage: 2.0V to 6.0V
• Operating Temperature Range: -40°C to +85°C
• Frequency Range: DC to 10MHz
• Lock Range: ±5% of VCO Center Frequency
• Input Capacitance: 3pF
• Output Drive Capability: 10 LSTTL Loads

Detailed Pin Configuration

The MC74HC4046AFELG has a total of 16 pins arranged as follows:

1. Pin 1: Phase Comparator 1 Input A
2. Pin 2: Phase Comparator 1 Input B
3. Pin 3: Phase Comparator 1 Output
4. Pin 4: VCO Control Voltage Input
5. Pin 5: Ground (GND)
6. Pin 6: VCO Output
7. Pin 7: Phase Comparator 2 Input B
8. Pin 8: Phase Comparator 2 Input A
9. Pin 9: Phase Comparator 2 Output
10. Pin 10: Reset Input
11. Pin 11: Lock Indicator Output
12. Pin 12: Charge Pump Output
13. Pin 13: Filter Capacitor Connection
14. Pin 14: Reference Frequency Input
15. Pin 15: VCC (Positive Supply Voltage)
16. Pin 16: Phase Comparator 3 Input

Functional Features

• Three phase comparators for frequency and phase detection
• Voltage-controlled oscillator with wide frequency range
• Lock indicator output for monitoring PLL lock status
• Reset input for initialization
• Charge pump output for controlling the VCO tuning voltage
• Filter capacitor connection for loop filter integration

Advantages and Disadvantages

Advantages: - High-speed CMOS technology allows for fast operation - Low power consumption for energy-efficient applications - Versatile functionality enables various frequency synthesis and synchronization tasks

Disadvantages: - Limited frequency range up to 10MHz - Sensitivity to noise and interference in high-frequency applications

Working Principles

The MC74HC4046AFELG operates based on the principles of a Phase-Locked Loop (PLL). It compares the phase and frequency of an input signal with that of a reference signal and generates an output signal with synchronized characteristics. The phase comparators detect any phase difference between the input and reference signals, and the charge pump adjusts the voltage applied to the VCO accordingly. This feedback loop ensures that the output signal maintains a locked phase and frequency relationship with the reference signal.

Detailed Application Field Plans

The MC74HC4046AFELG finds applications in various fields, including:

1. Communication Systems: Used for frequency synthesis in wireless communication devices, such as mobile phones and radios.
2. Audio Equipment: Enables precise frequency generation and synchronization in audio synthesizers and music production equipment.
3. Test and Measurement Instruments: Provides accurate frequency control and synchronization in signal generators and frequency counters.
4. Data Communication: Used in modems and network equipment for clock recovery and synchronization purposes.
5. Industrial Automation: Enables precise timing and synchronization in industrial control systems and robotics.

Detailed and Complete Alternative Models

1. CD4046BE: Similar PLL IC with DIP-16 package and wider temperature range.
2. MC14046BCL: CMOS version of the PLL IC with similar functionality and characteristics.
3. CD74HC4046AM: Surface-mount version of the IC with extended temperature range.

(Note: This is not an exhaustive list, and there are several other alternative models available in the market.)

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