The XR is a monolithic function generator integrated circuit capable of producing high quality sine, square, triangle, ramp, and pulse waveforms. This laboratory exercise will use the XR monolithic IC function generator. The manufacturer’s data sheet to analyze the requirements to set the frequency . The low-cost IC XR provides a very simple function generator with only a few external components. XR data sheet provides complete basic circuit for a.

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There xe2206 integrated circuits that produce sine waves, although they are really relaxation oscillators and the sine waves come from shaping a triangle wave. Switching frequency ranges from about one switch Verification of a frequency scale Setting the jc voltage through a second potentiometer Adjustment to minimize distortion of the sinusoidal signal Setting of the symmetry of the triangular signal 1Hz – 2MHz XR Function Generator Kit.

An increase in V lowers the frequency, and an increase raises it.

FM would also be good for testing a phase-locked loop. It is a very useful bench test equipment for testing and finding out the frequency of various devices with unknown frequency such as oscillators, radio receivers, transmitters, function generators, crystals, etc. I found 10k and 0. With the frequency-determining capacitor of 0. All required circuit details are shown in the datasheet.


For this project, I was more interested in producing a clean undistorted sinewave rather than pushing it to the limits in terms of frequency. The proper adjustment of these controls is necessary for icc good-looking sine wave. At pin 3 to set the exact medium voltage and the output amplitude.

Arduino – XR Function Generator

It can produce a triangle wave, but this is really just a step towards the sine wave, and is seldom required. The formula for the frequency is shown in the figure. A sine-shaping network makes the triangular signal of the VCO, a sinusoidal signal that can be picked up at the pin 2. The circuit includes an auto ranging as well as reset switch and produces very accurate and stable readings.

The frequency is changed by using a variable resistor. It’s small, power efficient, yet customizable through onboard 2 x 7 perfboard that can be used for connecting various sensors and connectors. A common function generator provides sine, for example, triangular and square waves. The XR offers many possibilities for sine wave generation and modulation over a wide range of frequency.

Function Generator with XR2206

The output waveforms can be both amplitude datsheet frequency modulated. The low-cost IC XR provides a very simple function generator with only a few external components.

I simply put the end of the whip antenna of the small pocket radio near the output of the XR, and got plenty of signal. Modulating the frequency with an external signal has quite a few applications. It also analyzes transistor’s characteristics such as voltage and gain. There are actually two timing resistors, and which one is used is selected by the level on pin 9. In any case, do not exceed 3 mA from pin 7 or 8. The kHz signal could be picked up on an AM radio at the expected frequency, and the darasheet heard.


One is displaying frequency response on the scope–you might try this with a parallel resonant circuit. It can be connected to any type of stereo audio source such as iPod, Computer, Laptop, CD Player, Walkman, Television, Satellite Receiver, Tape Deck or other stereo system to transmit stereo sound with excellent clarity throughout your home, office, yard or camp ground.

XR Function Generator

The output frequency can be modulated by an external voltage using the circuit shown at the right. The additional output at pin 11 also delivers a square wave with the same frequency. The chip is advertised to work down to 0. I used modulation at 1.

But xr2260 are some points that could improve it take to build an almost professional function generator. The sample design renounces everything that is not absolutely necessary.