Function Generator using ICL8038 and XR-2206 -
ICL8038 and XR-2206 can help you build a Function
Generator or Wavform Generator. It is needed along
with the Oscilloscope and Power Supply on the
The ICL8038 waveform generator is a monolithic
integrated circuit capable of producing high
accuracy sine, square, triangular, sawtooth and
pulse waveforms with a minimum of external
components. The frequency (or repetition rate) can
be selected externally from 0.001Hz to more than
300kHz using either resistors or capacitors, and
frequency modulation and sweeping can be
accomplished with an external voltage.
Use in Phase Locked Loops - Its high frequency
stability makes the ICL8038 an ideal building block
for a phase locked loop as shown in Figure 9. In
this application the remaining functional blocks,
the phase detector and the amplifier, can be formed
by a number of available ICs (e.g., MC4344, NE562).
Versatile Waveform Generator
delabs Notes - This was one of my favorite chips.
This is of educational value. It was a pioneer chip
a mixed cmos device. Make it a point to read the
Datasheet. Chip may have been invented 1980 around.
This is study material for college. It is not
available in stores. Some EE Engineer or Ham-DIY
Enthusiast may have a few. Borrow and try it out for
Function and Waveform Generators – IC
Science Fiction - Advanced Students can try
configuring it in a Programmable Mixed Chip EDA tool
plugin, if someone has developed that. Try taking a
draft output on a semiconductor laser nano-milling
prototype printer with a built in Mems pico-doper.
If that works, lets go foundry! Forgot to tell you,
Sprinkle Gallium Arsenide in the RF Areas, and add
Graphene to taste
||0.95 Hz to 105 KHz in five
|Sine, Triangular and Square.
|Adjustable from 10 mV PP. to
10 V PP
|Sine wave Amplitude Flatness
||+/- 1 dB
|Sine wave THD
- Less than or equal to 0.8% from 10 Hz
to 10 KHz
- Less than or equal to 2.5% from 1 Hz
to 100 KHz
|Triangle wave non-linearity
- Less than or equal to 0.5% upto 10
- Less than or equal to 1.5% at 100 KHz.
|Square wave rise-fall time
||Less than or equal to 200 ns.
T1-SL100, T2-SK100, D1, D2-IN4148
1/4 W - 5%
|R1, R13, R14-10E; R18-22E;
R16-47E; R11-56E; R9-220E; R19-390E; R2-1KE;
R6, R8-2.2KE; R17-1.8KE; R3-R5-4.7KE; R10,
R29, R15-3.9KE; R20, R21-39KE; R22-15KE.
||VR1, VR3-2.2KE; VR4-470E;
VR5-VR7-l00KE; VR8-22KE; VR10-IOKE.
||VR2-FF-500E 1 W, VR9-VF-22K 1
|C1, C7, C8,-0.1 MFD; C2-3.3
MFD; C3-0.33 MFD; C4-33 KPF; C5-3.3 KPF;
C6-330PF; C9-100MFD; C10-22PF; C11,
||FC-1 POLE 5 WAY SWITCH, SS-2
POLE 3 WAY SWITCH, VC-1 POLE 4 WAY SWITCH,
PCB, KNOBS, 2BNC SOCKETS, E,F IC BASES.
Electronics -- ICL8038-based Oscillator - The
ICL8038 and all parts around on the lower half of
the sheet make up the actual oscillator which is a
modified design based on one of the application
examples in Intersil's data sheet. There is a large
6-stage switch (S1) to select the major frequency
and a logarithmic potentiometer (R2) for minor
A High Quality Function Generator system Using
the XR-2206 - Application Note AN-14
Waveform or function generators capable of producing
AM/FM modulated sine wave outputs find a wide range
of applications in electrical measurement and
laboratory instrumentation. This application note
describes the design, construction and the
performance of such a complete function generator
system suitable for laboratory usage or hobbyist
See a complete project here by John Owen in UK XR-2206
5Hz to 300kHz Function Generator it uses the
Arduino - ATmega328 as a frequency counter and to
drive an 8-digit 0.36" LED SPI module - 6 digits
only are used. A Datasheet
The entire function generator is comprised of a
single XR-2206 monolithic IC and a limited number of
passive circuit components. It provides the
engineer, student, or hobbyist with highly versatile
laboratory instrument for waveform generation at a
very small fraction of the cost of conventional
function generators available today.
The basic circuit configuration and the external
components necessary for the high-quality function
generator system is shown in Figure 1. The circuit
shown in the figure is designed to operate with
either a 12V single power supply, or with a ±6V
split supplies. For most applications, split-supply
operation is preferred since it results in an output
DC level which is nearly at ground potential.
The circuit configuration of Figure 1 provides three
basic waveforms: sine, triangle and square
wave. There are four overlapping frequency ranges
which give an overall frequency range of 1 Hz to 100
kHz. In each range, the frequency may be varied over
a 100:1 tuning range.
Note - The text above is a ocr of scan. This is from
an Old Application Note of Exar from -
"Applications Data Book" June 1981.