Thursday, July 19, 2012

Function Generator DIY Kit 20Hz - 100KHz XR2206

Function Generator DIY Kit 20Hz - 100KHz


Function generator is an integral part of any electronic lab. This test equipment used to generate different types of electrical waveforms: usually sine, triangle, sawtooth and square waves. More information about function generators can be found on Wikipedia
Some Integrated Circuits was designed to generate waveforms and it possible to build your own diy function generator project based on this type of IC. One of this chips is XR2206 by EXAR. 
XR2206 is monolithic function generator IC with excellent temperature stability 20ppm/C, wide sweep range, low sine wave distortion and other features. 

Our diy function generator kit has all components to build a simple diy project:

XR2206 kit components bag

All components is carefully packed with different suitable bags:

XR2206 diy components

The PCB board is double side with green soldermask and white silkscreen for easy parts installation. The board is high quality manufactured with through pads and HASL.

XR2206 PCB

The diy function generator kit can produce sine, triangle and square waves from 20Hz to 100KHz in 4 ranges with fine adjust. It can be powered from 12V DC power supply and consume 20mA current. 

Technical specifications:

Amplitude: 0.05 - 2V AC Peak to Peak
Output Impedance: 600 Ohm
Distortion: 0.5%

Amplitude: 0.05 - 4V AC Peak to Peak
Output Impedance: 600 Ohm
Linearity: 1%

Amplitude: 11V AC Peak to Peak
Rise time: 250 ns at 1KHz
Fall time: 50 ns at 1KHz

Package include:
1x Manufactured PCB 73x38 mm
1x XR2206CP IC
2x 1% Metal Film Resistor 5.1K
1x 1% Metal Film Resistor 10K
1x 1% Metal Film Resistor 10R
1x 1% Metal Film Resistor 3K
1x Trimmer Potentiometer 500R
1x Trimmer Potentiometer 30K
2x Rotary Potentiometer 10K
1x Rotary Potentiometer 100K
1x 1N4007 Diode
1x 100uF Electrolytic Capacitor
1x 10uF Electrolytic Capacitor
1x 1uF Electrolytic Capacitor
1x 100nF Ceramic Capacitor
1x 1nF Polyester Film Capacitor
1x 10nF Polyester Film Capacitor
1x 100nF Polyester Film Capacitor
1x 1uF Polyester Film Capacitor
1x DIP Socket 16 Pin
2x Jumper Cup
20x Pin of 2.54 mm Male Pin Header

The kit is can be used without calibration that may be relevant if you can't reach a oscilloscope. Without sine wave calibration it has 2.5% total harmonic distortion (THD). If you'll perform calibration process it will reach 0.5% THD.

The circuit and full PDF manual is included in the purchase. The manual has pictures of the assembling process and calibration instruction. The kit is require solder skills and basic electronics knowledge. However we can offer a technical support.

The board has jumper control for frequency range selection. 4 high quality polyester timing capacitors is provide each range:
  • 20Hz- 100Hz
  • 100Hz - 1KHz
  • 1KHz - 10KHz
  • 10KHz - 100KHz
If you'll install the function generator to project box it will be better to connect an external rotary selector and SPST button for sine/triangle waves toggle. External components and power supply are not included with the purchase. 

XR2206 function generator from

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