RC2211N Phase-Locked Loop (PLL) System

Overview

The RC2211N is a monolithic phase-locked loop (PLL) system specifically engineered for data communication applications. Its robust design makes it particularly suitable for FSK (Frequency-Shift Keying) modem implementations, offering a broad operational frequency range from 0.01 Hz to 300 kHz. The device supports analog signal inputs ranging from 2 mV to 3V RMS and is compatible with DTL, TTL, and ECL logic families, ensuring versatile integration into various digital and analog systems.

The RC2211N integrates a quadrature phase detector for carrier detection, a voltage-controlled oscillator (VCO), and a phase comparator, providing a comprehensive solution for frequency tracking and demodulation tasks. Its excellent temperature stability and adjustable tracking range make it a reliable choice for demanding communication environments.

Features

• Wide Frequency Range: Operates from 0.01 Hz to 300 kHz, accommodating both low and high-frequency signals.
• Broad Supply Voltage Range: Supports supply voltages from 4.5V to 20V, enabling flexible power supply configurations.
• Logic Compatibility: Interfaces seamlessly with DTL, TTL, and ECL logic families, ensuring easy integration with existing digital systems.
• FSK Demodulation: Includes built-in carrier detection for efficient FSK demodulation.
• Wide Dynamic Range: Accepts input signals from 2 mV to 3V RMS, making it suitable for low and high-amplitude applications.
• Adjustable Tracking Range: Allows tuning from ±1% to ±80%, providing precise control over frequency lock ranges.
• Temperature Stability: Excellent performance with a typical temperature coefficient of 20 ppm/°C, ensuring reliability across varying environmental conditions.

Applications

The RC2211N is designed for a variety of communication and signal processing tasks, including:

• FSK Demodulation: Ideal for modem and telecommunication systems requiring frequency-shift keying.
• Data Synchronization: Ensures accurate clock recovery and synchronization in digital data streams.
• Tone Decoding: Suitable for tone detection and decoding in audio and control systems.
• FM Detection: Provides reliable frequency modulation demodulation for radio and broadcast applications.
• Carrier Detection: Enables robust carrier signal detection in communication receivers.

Electrical Characteristics

Absolute Maximum Ratings

• Supply Voltage (V_CC): 20V
• Input Voltage Range: 2 mV to 3V RMS
• Operating Temperature Range: -40°C to +85°C
• Storage Temperature Range: -65°C to +150°C

Typical Performance Characteristics

• Frequency Range: 0.01 Hz to 300 kHz
• Tracking Range Adjustment: ±1% to ±80% of center frequency
• Temperature Stability: 20 ppm/°C (typical)
• Input Sensitivity: 2 mV RMS (minimum detectable signal)
• Power Consumption: 15 mA (typical at 12V supply)

Package Information

The RC2211N is available in a standard 16-pin dual in-line package (DIP), ensuring compatibility with through-hole PCB assembly processes. The package dimensions and pin configuration are as follows:

Package Dimensions

• Package Type: 16-Pin DIP (Dual In-Line Package)
• Length: 19.3 mm (max)
• Width: 6.35 mm (max)
• Height: 4.57 mm (max)
• Lead Pitch: 2.54 mm

Pin Configuration

• Pin 1: Phase Comparator Input
• Pin 2: Phase Comparator Output
• Pin 3: VCO Control Input
• Pin 4: VCO Output
• Pin 5: Ground (GND)
• Pin 6: Carrier Detect Output
• Pin 7: Quadrature Phase Detector Output
• Pin 8: Supply Voltage (V_CC)
• Pins 9-16: Additional control and I/O pins as per datasheet.

Conclusion

The RC2211N is a versatile and high-performance phase-locked loop system tailored for data communication applications. Its wide frequency range, adjustable tracking, and compatibility with multiple logic families make it an excellent choice for FSK demodulation, tone decoding, and carrier detection. With robust temperature stability and a flexible supply voltage range, the RC2211N is well-suited for both industrial and commercial applications requiring reliable frequency tracking and signal processing.