Skip to content

Discovering the XR2206 IC: A complete guide to Its functions and uses


The XR2206 integrated circuit (IC) is a versatile and widely used component in electronic circuits, particularly in signal generation and frequency synthesis applications. This comprehensive guide aims to elucidate the functionality, features, and diverse applications of the XR2206 IC, providing engineers and enthusiasts with a thorough understanding of its capabilities.

1. Overview of the XR2206 IC

The XR2206 is a monolithic function generator IC manufactured by Exar Corporation. It is designed to produce precise sine, square, and triangular waveforms with minimal external components, making it a cost-effective solution for various signal generation tasks.

2. Working principle

The XR2206 operates on the principle of voltage-controlled oscillation, where the frequency of the output waveform is determined by external components such as resistors and capacitors. It includes an internal voltage-controlled oscillator (VCO), waveform shaper, and output amplifier, enabling it to generate accurate and stable waveforms across a wide frequency range.



3. Features of the XR2206 IC

  • Wide frequency range: The XR2206 can generate frequencies ranging from 0.01 Hz to 1 MHz, covering a broad spectrum of applications.
  • Low distortion: With low total harmonic distortion (THD) and high signal-to-noise ratio (SNR), the XR2206 ensures high-quality output waveforms.
  • Voltage-controlled frequency tuning: The frequency of the output waveform can be precisely controlled using an external voltage, allowing for frequency modulation (FM) and frequency sweeping applications.
  • Flexible output waveforms: The XR2206 can produce sine, square, and triangular waveforms simultaneously, providing versatility in signal generation tasks.

4. Pin configuration

The XR2206 IC is available in a 16-pin dual in-line package (DIP). Its pin configuration includes:

  • Pins 1, 2, 3: Frequency setting inputs
  • Pin 4: Voltage control input
  • Pins 5, 6: External capacitor connections
  • Pins 7, 8: Ground connections
  • Pins 9, 10: Output waveforms (sine, square)
  • Pins 11, 12: Triangular waveform output
  • Pins 13, 14: Positive power supply connections
  • Pin 15: Output amplitude control
  • Pin 16: Output offset control

5. Applications of the XR2206 IC

The XR2206 finds applications in various fields, including:

  • Function generators: Generating precise and stable waveforms for testing and calibration purposes.
  • Frequency synthesizers: Producing frequency-agile signals for communication and instrumentation systems.
  • Audio signal generators: Generating audio test signals for equipment testing and audio applications.
  • Frequency modulation (FM) circuits: Implementing frequency modulation for radio and telecommunications applications.
  • Sweep generators: Creating frequency sweep signals for spectrum analysis and frequency response testing.

Practical considerations

When using the XR2206 IC, several factors should be considered:

  • Component selection: Choosing appropriate resistors and capacitors according to the desired output frequency and waveform characteristics.
  • Power supply: Providing a stable and noise-free power supply is crucial for ensuring accurate and reliable operation of the XR2206.
  • Output loading: Avoiding excessive loading on the output pins and ensuring proper termination of output signals to prevent distortion and signal degradation.


The XR2206 integrated circuit is a versatile and indispensable component in electronic circuits, offering precise signal generation capabilities across a wide frequency range. Its simplicity, flexibility, and reliability make it a preferred choice for engineers, hobbyists, and enthusiasts alike. By understanding its functionality, features, and applications, one can leverage the XR2206 IC to its fullest potential in various electronic projects and applications, unlocking endless possibilities in signal generation and frequency synthesis.

Image : – CC BY-NC-SA 3.0 US DEED

Don't lag behind the latest technological trends!
This is default text for notification bar