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1Hz – 2MHz Function Generator with XR2206 using pic microcontoller

1Hz - 2MHz Function Generator with XR2206 Premium quality XR2206 Function Generator kit capable of producing high quality sine, square and triangle...

Tags: #generator#pic-microcontoller#xr2206
Ibrar Ayyub By Ibrar Ayyub
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CategoryAudio, Sound & Radio
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Summary of 1Hz – 2MHz Function Generator with XR2206 using pic microcontoller

This article details a 1Hz to 2MHz function generator kit based on the XR2206 IC, capable of producing sine, square, and triangle waveforms. It features coarse frequency selection via DIP switches and fine-tuning with potentiometers. The kit includes premium components like gold-plated connectors and metal film resistors, designed for high stability and accuracy suitable for bench testing.

Parts used in the 1Hz - 2MHz Function Generator:

  • XR2206 - Function Generator IC
  • Function Generator PCB
  • RCA Gold Plated Connector
  • SW1 - 4-DIP Switch
  • SW2 – (Sine / Triangle) / Square Switch
  • S3 – Sine / Triangle Switch
  • 1x 3-PIN Gold Plated Male Header
  • 2x 2-PIN Gold Plated Male Header
  • P1 - 100K Potentiometer (Frequency – Coarse)
  • P2 - 50K Potentiometer (Frequency – Fine)
  • P3 - 100K Potentiometer (Amplitude)
  • 1x 100uF Audio Capacitor
  • 2x 10uF Audio Capacitor
  • 2x 100nF Capacitor
  • 1x 1nF Capacitor
  • 1x 150pF Capacitor
  • 3x 6.8K 1% Metal Film Resistor
  • 2x 1K 1% Metal Film Resistor
1Hz - 2MHz Function Generator with XR2206 Component List:
XR2206 - Function Generator IC
Function Generator PCB
RCA Gold Plated Connector
SW1 - 4-DIP Switch
SW2 – (Sine / Triangle) / Square Switch
SW2 – Sine / Triangle Switch
1x 3-PIN Gold Plated Male Header
2x 2-PIN Gold Plated Male Header
P1 - 100K Potentiometer (Frequency – Coarse)
P2 - 50K Potentiometer (Frequency – Fine)
P3 - 100K Potentiometer (Amplitude)
1x 100uF Audio Capacitor
2x 10uF Audio Capacitor
2x 100nF Capacitor
1x 1nF Capacitor
1x 150pF Capacitor
3x 6.8K 1% Metal Film Resistor
2x 1K 1% Metal Film Resistor
  Technical Specifications:

Voltage Supply: 9-18V DC Input
Waveforms: Square, Sine & Triangle
Impedance: 600 Ohm + 10%
Frequency: 1Hz - 2MHz

SINE WAVE
• Amplitude: 0 - 3V at 9V DC input
• Distortion: Less than 1% (at 1kHz)
• Flatness: +0.05dB 1Hz - 100kHz

SQUARE WAVE
• Amplitude: 8V (no load) at 9V DC input
• Rise Time: Less than 50ns (at 1kHz)
• Fall Time: Less than 30ns (at 1kHz)
• Symmetry: Less than 5% (at 1kHz)

TRIANGLE WAVE
• Amplitude: 0 - 3V at 9V DC input
• Linearity: Less than 1% (up to 100kHz) 10mA
 1Hz - 2MHz Function Generator with XR22061Hz - 2MHz Function Generator with XR2206

Premium quality XR2206 Function Generator kit capable of producing high quality sine, square and triangle waveforms of high-stability and accuracy. The output waveforms can be both amplitude and frequency modulated. Coarse frequency adjustment is accomplished using 4-DIP switch for the following four frequency ranges; (1) 1Hz-100Hz, (2) 100Hz-20KHz, (3) 20KHz-1MHz, (4) 150KHz-2MHz. Frequency output can be fine tuned using P1 and P2 potentiometers. 1Hz - 2MHz XR2206 Function Generator kit includes premium quality components, including Audio Grade Gold Capacitors, Gold Plated RCA Connector, WIMA Capacitors, 1% Metal Film Resistors and premium quality PCB with red solder mask.

1Hz - 2MHz Function Generator with XR2206Function Generator Adjustments

P1 – Coarse Frequency Adjustment
P2 – Fine Frequency Adjustment
P3 – Sine / Triangle Wave Amplitude Control (0 - 3V at 9V DC input)
SW1 – Coarse Frequency Adjustment (only one switch must be in ON position at a time)
SW2 – Sine / Square Waveform Selection
S3 – Sine / Triangle Waveform Selection (SW2 must be switched to Sine)

 PCB LayoutXR2206 Function Generator Kit PCB
Displaying Output Frequency on LCD
60MHz Frequency Meter Counter PIC16F628A
XR2206 Function Generator kit includes output that can be directly connected to 60MHz Counter kit for measuring and displaying output frequency on LCD display. 60MHz Frequency Meter / Counter measures frequency from 10Hz to 60MHz with 10Hz resolution. It is a useful bench test equipment for testing and finding out unknown frequency of various devices such as oscillators, radio receivers, transmitters, function generators, crystals, etc. The meter provides very stable readings and has excellent input sensitivity thanks to onboard amplifier and TTL converter. It can even measure weak signals from crystal oscillators. With the addition of prescaller it is possible to measure frequency of 1GHz and above. Please see the link to learn more about 60MHz Frequency Meter / Counter.
Source : 1Hz - 2MHz Function Generator with XR2206
  • What voltage supply does the generator require?
    The device requires a 9-18V DC input.
  • How is the coarse frequency adjustment performed?
    Coarse frequency adjustment is accomplished using the 4-DIP switch (SW1).
  • Can the output waveforms be modulated?
    Yes, the output waveforms can be both amplitude and frequency modulated.
  • What is the distortion level for the sine wave at 1kHz?
    The distortion is less than 1% at 1kHz.
  • Which component controls the sine and triangle wave amplitude?
    P3, a 100K Potentiometer, controls the sine and triangle wave amplitude.
  • How many frequency ranges are available with the DIP switch?
    There are four frequency ranges available: 1Hz-100Hz, 100Hz-20KHz, 20KHz-1MHz, and 150KHz-2MHz.
  • What type of capacitors are included in the kit?
    The kit includes audio grade gold capacitors and WIMA capacitors.
  • Can this generator be connected to an LCD display?
    Yes, it can be directly connected to a 60MHz Counter kit to measure and display output frequency on an LCD display.
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Ibrar Ayyub

Ibrar Ayyub

I am an experienced technical writer holding a Master's degree in computer science from BZU Multan, Pakistan University. With a background spanning various industries, particularly in home automation and engineering, I have honed my skills in crafting clear and concise content. Proficient in leveraging infographics and diagrams, I strive to simplify complex concepts for readers. My strength lies in thorough...