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. 191-9726
BrandRS PRO
$1,202.11
Each
units
25MHz - - - - - - Yes Yes - - Yes ±20ppm 20dB
RS Stock No. 123-3531
BrandRS PRO
$608.06
Each
units
5MHz 0.1Hz 5MHz 0.1 Hz 1MHz 0.1Hz Yes Yes Yes Yes Yes Yes ±20ppm -
RS Stock No. 123-3534
BrandRS PRO
$996.21
Each
units
25MHz 1µHz 25MHz 1 μHz 1MHz - Yes Yes Yes Yes Yes Yes ±20ppm -
RS Stock No. 123-3530
BrandRS PRO
$699.45
Each
units
12MHz 0.1Hz 12MHz 0.1 Hz 1MHz 0.1Hz Yes Yes Yes Yes Yes Yes ±20ppm -
RS Stock No. 123-3533
BrandRS PRO
$892.10
Each
units
25MHz 0.1Hz 25MHz 0.1 Hz 1MHz 0.1Hz Yes Yes Yes Yes Yes Yes ±20ppm -
RS Stock No. 191-9723
BrandRS PRO
$830.85
Each
units
25MHz - - - - - - Yes Yes - - Yes ±20ppm 20dB
RS Stock No. 124-0226
BrandRS PRO
$755.74
Each
units
25MHz 0.1Hz 25MHz 0.1 Hz - - Yes Yes Yes - Yes - ±20ppm -
RS Stock No. 191-9727
BrandRS PRO
$1,881.68
Each
units
25MHz - - - - - - Yes Yes - - Yes ±20ppm 20dB
RS Stock No. 191-9725
BrandRS PRO
$902.97
Each
units
25MHz - - - - - - Yes Yes - - Yes ±20ppm 20dB
RS Stock No. 123-3532
BrandRS PRO
$515.50
Each
units
12MHz 0.1Hz 12MHz 0.1 Hz 1MHz 0.1Hz Yes Yes Yes Yes Yes Yes ±20ppm -
RS Stock No. 191-9724
BrandRS PRO
$1,580.68
Each
units
25MHz - - - - - - Yes Yes - - Yes ±20ppm 20dB
RS Stock No. 123-3556
BrandRS PRO
$683.97
Each
units
5MHz 0.5Hz 5MHz 0.5 Hz 5MHz 0.5Hz Yes Yes Yes Yes Yes Yes ±10ppm -20dB
RS Stock No. 191-9722
BrandRS PRO
$675.60
Each
units
25MHz - - - - - - Yes Yes - - Yes ±20ppm 20dB
RS Stock No. 123-3529
BrandRS PRO
$513.16
Each
units
5MHz 0.1Hz 5MHz 0.1 Hz 1MHz 0.1Hz Yes Yes Yes Yes Yes Yes ±20ppm -
RS Stock No. 123-3555
BrandRS PRO
$541.22
Each
units
3MHz 0.3Hz 3MHz 0.3 Hz 3MHz 0.3Hz Yes Yes Yes Yes Yes Yes ±10ppm -20dB
RS Stock No. 123-3554
BrandRS PRO
$496.99
Each
units
3MHz 0.3Hz 3MHz 0.3 Hz 3MHz 0.3Hz Yes Yes Yes Yes Yes - ±10ppm -20dB
RS Stock No. 667-2591
Mfr. Part No.33210A
$2,237.95
Each
units
10MHz 0.001Hz 3 MHz, 5 MHz, 10 MHz 0.001 Hz, 1 mHz 100kHz 0.001Hz Yes Yes Yes Yes Yes Yes ±20ppm -
RS Stock No. 763-9125
Mfr. Part No.33511B
$3,287.18
Each
units
20MHz 1µHz 20MHz 1 μHz 20kHz 1µHz Yes Yes Yes Yes Yes Yes ±0.1ppm -
RS Stock No. 763-9129
Mfr. Part No.33512B
$4,986.67
Each
units
20MHz 1µHz 20MHz 1 μHz 20kHz 1µHz Yes Yes Yes Yes Yes Yes ±0.1ppm -
RS Stock No. 898-8595
Mfr. Part No.AFG3152C
BrandTektronix
$12,222.00
Each
units
150MHz 1µHz 100 (Arbitrary) MHz, 100 (Pulse) MHz, 100 (Square) MHz 1 (Arbitrary) mHz, 1 (Pulse) mHz, 1 (Square) μHz 150MHz 1µHz Yes Yes Yes Yes Yes Yes ±1ppm -