Function Generators

A function generator is a test and measuring device which creates electronic signals in many different waveforms. The generator's main purpose, when connected to a circuit, is to produce controllable waveforms with adjustable frequencies, amplitude outputs, or DC offsets. Function generators help to save time in building oscillators when you are fabricating prototype audio circuits or low and high-pass filters.

Function generators produce a range of different waveforms, such as sine waves, triangular waves, sawtooth waves and square waves. The signal generator can produce repetitive signals and can also change some characteristics of the wave. You can view the signals generated by the device by attaching it to an oscilloscope. Function generators may provide other functions, such as DC offset and variable symmetry. There is usually a screen on the generator which displays the monitoring of the output.

Frequency range and waveforms

  • 0.001 Hz to 2000 MHz Sine wave
  • 0.001 Hz to 160 MHz Square wave
  • 0.001 Hz to 800 kHz Triangle wave

Where are function generators used?

  • Integrated electronic testing
  • Embedded systems
  • Digital circuits
  • Analogue signal processing
  • Laboratory testing

Function Generators vs. Arbitrary Waveform Generators (AWGs)

Function generators are usually slightly cheaper than AWGs and they perform quite similarly. However, Arbitrary Waveform Generators generally provide more functions and offer the ability to create a custom waveform output of any size. Function generators offer a periodic waveform.


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Description Price Maximum Frequency Range Sinewave Minimum Frequency Range Sinewave Maximum Frequency Range Square Pulse and Arbitrary Waveform Minimum Frequency Range Square Pulse and Arbitrary Waveform Maximum Frequency Range Triangle/Saw Minimum Frequency Range Triangle/Saw Digital Frequency Digital Amplitude and Offset Internal Linear and Log Sweep Variable Sweep Internal and External Amplitude Modulation FM Modulation Time Base Accuracy Attenuation
RS Stock No. 179-3504
Mfr. Part No.AFG31021
BrandTektronix
TWD75,682.00
Each
units
25MHz - 20MHz 1 μHz 500kHz 1µHz Yes Yes Yes - Yes Yes - -
RS Stock No. 763-9129
Mfr. Part No.33512B
TWD119,650.00
Each
units
20MHz 1µHz 20MHz 1 μHz 20kHz 1µHz Yes Yes Yes Yes Yes Yes ±0.1ppm -
RS Stock No. 800-8248
Mfr. Part No.TG2512A
BrandAim-TTi
TWD34,678.00
Each
units
25MHz 1µHz 6 MHz, 6.25 MHz, 25 MHz 1 μHz, 500 μHz 500kHz 1µHz Yes Yes Yes Yes Yes Yes 1ppm -
RS Stock No. 188-6967
Mfr. Part No.SQ100
BrandIKALOGIC
TWD4,769.00
Each
units
- - - - - - Yes - - - - Yes - -
RS Stock No. 162-5668
Mfr. Part No.59120-6140
BrandAim-TTi
TWD38,292.00
Each
units
160MHz 1µHz 20 MHz, 50 MHz, 80 MHz 1 1μHz, 1 mHz, 1 μHz 5MHz 1µHz Yes Yes Yes Yes Yes Yes ±1ppm 42dB
RS Stock No. 763-9113
Mfr. Part No.33509B
TWD88,420.00
Each
units
20MHz 1µHz 20MHz 1 μHz 20kHz 1µHz Yes Yes Yes Yes Yes Yes ±0.1ppm -
RS Stock No. 191-9723
BrandRS PRO
TWD17,172.00
Each
units
25MHz - - - - - - Yes Yes - - Yes ±20ppm 20dB
RS Stock No. 191-9722
BrandRS PRO
TWD14,055.00
Each
units
25MHz - - - - - - Yes Yes - - Yes ±20ppm 20dB
RS Stock No. 124-0226
BrandRS PRO
TWD15,722.00
Each
units
25MHz 0.1Hz 25MHz 0.1 Hz - - Yes Yes Yes - Yes - ±20ppm -
RS Stock No. 121-7543
Mfr. Part No.BK4013B
TWD17,234.00
Each
units
12MHz 0.1Hz 12MHz 0.1 Hz 1MHz 0.1Hz Yes Yes Yes Yes - - - -
RS Stock No. 800-3173
Mfr. Part No.TG5011A
BrandAim-TTi
TWD29,732.00
Each
units
50MHz 1µHz 10 MHz, 12.5 MHz, 50 MHz 1 μHz, 500 μHz 1MHz 1µHz Yes Yes Yes Yes Yes Yes - -
RS Stock No. 763-9135
Mfr. Part No.33521B
TWD86,854.00
Each
units
30MHz 1µHz 30MHz 1 μHz 20kHz 1µHz Yes Yes Yes Yes Yes Yes ±0.1ppm -
RS Stock No. 879-3832
Mfr. Part No.GX320-E
BrandMetrix
TWD31,221.00
Each
units
20MHz 0.001Hz 20MHz 0.001 Hz 2MHz 0.001Hz Yes Yes Yes - Yes Yes - -
RS Stock No. 465-8928
Mfr. Part No.TG330
BrandAim-TTi
TWD15,452.00
Each
units
3MHz 0.03Hz 3MHz 0.03 Hz 3MHz 0.03Hz Yes Yes Yes Yes Yes - ±10ppm -60 dB, -40 dB, -20 dB, 0 dB
RS Stock No. 879-3826
Mfr. Part No.GX310
BrandMetrix
TWD20,560.00
Each
units
10MHz 0.001Hz 10MHz 0.001 Hz 2MHz 0.001Hz Yes Yes Yes - - - - -
RS Stock No. 179-8131
Mfr. Part No.AFG31152
BrandTektronix
TWD243,264.00
Each
units
150MHz 1µHz 120MHz 1 μHz - - Yes Yes Yes Yes Yes Yes - -
RS Stock No. 123-3555
BrandRS PRO
TWD11,947.00
Each
units
3MHz 0.3Hz 3MHz 0.3 Hz 3MHz 0.3Hz Yes Yes Yes Yes Yes Yes ±10ppm -20dB
RS Stock No. 123-3534
BrandRS PRO
TWD20,813.00
Each
units
25MHz 1µHz 25MHz 1 μHz 1MHz - Yes Yes Yes Yes Yes Yes ±20ppm -
RS Stock No. 175-2532
Mfr. Part No.BK4005DDS
TWD13,226.00
Each
units
5MHz 1Hz 5MHz 1 Hz 5MHz 1Hz Yes Yes - - - - - -20dB
RS Stock No. 179-3509
Mfr. Part No.AFG31102
BrandTektronix
TWD207,225.00
Each
units
100MHz - 80MHz 1 μHz 1MHz 1µHz Yes Yes Yes - Yes Yes - -