Function Generator ICs

A function generator is also known as a waveform generator and is an electronic device which has a very wide frequency range that can be used to produce different waveforms as its output signal. They are very versatile instruments as they can produce a wide variety of waveforms, frequencies, amplitude and duty cycle and each is suitable for different applications. Function generators called arbitrary waveform generators will allow you to generate any waveform and shape you want.


They are typically used to test analogue devices such as amplifiers and communications equipment, production testing and equipment maintenance.


There are various function generator ICs (or waveform generator ICs) available and all can be incorporated into a circuit to produce the different periodic waveforms required, common output wave types include:


  • Sine or sinusoidal - consists of a single frequency, looks like a continuous wave and can be easily generated, considered the most fundamental building block of sound

  • Square – non-sinusoidal waveform (has multiple sine waves of different frequencies), contains odd harmonics. Found in electronics and signal processing. Used as timing references

  • Triangle – non-sinusoidal, triangular in shape. Like the square, contains odd harmonics of the fundamental frequency but the power of harmonics is twice as low as their analogues in the square wave.

  • Sawtooth or saw wave – non-sinusoidal, looks like the teeth of a saw. Contains both even and odd harmonics ideal for musical sounds.

How do function generator circuits work?


A basic function generator circuit produces, for example, a triangular waveform at a frequency that can be controlled. The triangular wave is used as the base for all of the circuit’s other outputs, which are generated by charging and discharging a capacitor (used to store an electric charge) to shape the waveform. As the output voltage reaches an upper or lower limit, the charging or discharging is reversed by a comparator (a device used to compare two electrical signals). Different frequencies can then be achieved by varying the size of the capacitor and charge current, as well as the frequency of the base triangular wave.


Difference between a signal generator and a function generator?


A function generator produces the same waves as a signal generator but also custom shapes (advantage this device has). Some have high speed digital to analogue converters that can emulate all sorts of shapes for the signal. Sometimes there are filters to remove undesired harmonics at the output and their frequency range is usually limited at the upper levels.


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Description Price Maximum Frequency Maximum Duty Cycle Package Type Pin Count Dimensions Height Length Maximum Operating Supply Voltage Maximum Operating Temperature Maximum Output Frequency Minimum Operating Supply Voltage Minimum Operating Temperature Width Mounting Type
RS庫存編號 709-6011
製造零件編號AD5930YRUZ
HK$108.27
單位
- - TSSOP 20 6.5 x 7.6 x 1.05mm 1.05mm 6.5mm - +125 °C - - -40 °C 4.4mm Surface Mount
RS庫存編號 169-0173
製造零件編號SI52112-A2-GT
HK$16.317
毎管:100 個
單位
25MHz 55% TSSOP 8 3.1 x 4.5 x 1.05mm 1.05mm 3.1mm 3.46 V +85 °C 100MHz 3.13 V -40 °C 4.5mm Surface Mount
RS庫存編號 168-9980
製造零件編號SI52112-A1-GM2
HK$14.072
Each (On a Tape of 100)
單位
25MHz 55% TDFN 10 3 x 3 x 0.75mm 0.75mm 3mm 3.46 (Extended) V, 3.63 (Commercial) V +85 °C 100MHz 2.97 (Commercial) V, 3.13 (Extended) V -40 °C 3mm Surface Mount
RS庫存編號 823-1987
製造零件編號Si5351A-B-GT
HK$9.274
/個 (每包:5個)
單位
100MHz 55% MSOP 10 4 x 4 x 0.85mm 0.85mm 4mm 3.6 V +85 °C 160MHz 3 V -40 °C 4mm Surface Mount
RS庫存編號 796-0388
製造零件編號Si52112-A1-GM2
HK$13.188
/個 (每包:5個)
單位
25MHz 55% TDFN 10 3 x 3 x 0.75mm 0.75mm 3mm 3.46 (Extended) V, 3.63 (Commercial) V +85 °C 100MHz 2.97 (Commercial) V, 3.13 (Extended) V -40 °C 3mm Surface Mount
RS庫存編號 709-4702
製造零件編號AD2S99APZ
HK$181.15
單位
- - P-20A 20 9.04 x 8.38 x 3.94mm 3.94mm 9.04mm ±5.25 V +85 °C - ±4.75 V -40 °C 8.38mm Surface Mount
RS庫存編號 819-6764
製造零件編號SL28PCIe26ALC
HK$31.50
/個 (每包:2個)
單位
100MHz 55% QFN 32 5.1 x 5.1 x 0.8mm 0.8mm 5.1mm 3.465 V +85 °C - 3.135 V 0 °C 5.1mm Surface Mount
RS庫存編號 168-9975
製造零件編號SI5338A-B-GM
HK$151.733
Each (In a Tray of 75)
單位
710MHz 55% QFN 24 4 x 4 x 0.85mm 0.85mm 4mm 3.63 V +85 °C 710MHz 1.71 V -40 °C 4mm Surface Mount
RS庫存編號 850-7833
製造零件編號AD9520-4BCPZ
HK$187.97
單位
250MHz 50% LFCSP VQ 64 9.1 x 9.1 x 0.95mm 0.95mm 9.1mm 3.465 V +85 °C 1800MHz 3.135 V -40 °C 9.1mm Surface Mount
RS庫存編號 796-0347
製造零件編號Si5338C-B-GM
HK$92.07
單位
710MHz 55% QFN 24 4 x 4 x 0.85mm 0.85mm 4mm 3.63 V +85 °C 200MHz 1.71 V -40 °C 4mm Surface Mount
RS庫存編號 796-0322
製造零件編號Si5338A-B-GM
HK$150.56
單位
710MHz 55% QFN 24 4 x 4 x 0.85mm 0.85mm 4mm 3.63 V +85 °C 710MHz 1.71 V -40 °C 4mm Surface Mount
RS庫存編號 168-9995
製造零件編號SL28SRC01BZI
HK$21.466
毎管:96 個
單位
14.3182MHz 55% TSSOP 16 5.1 x 4.5 x 1.05mm 1.05mm 5.1mm 3.465 V +85 °C - 3.135 V -40 °C 4.5mm Surface Mount
RS庫存編號 796-0410
製造零件編號Si52143-A01AGM
HK$22.802
/個 (每包:5個)
單位
25MHz 55% QFN 24 4 x 4 x 0.75mm 0.75mm 4mm 3.465 V +85 °C 100MHz 3.135 V -40 °C 4mm Surface Mount
RS庫存編號 160-9919
製造零件編號AD9520-4BCPZ
HK$188.61
Each (In a Tray of 260)
單位
250MHz 50% LFCSP VQ 64 9.1 x 9.1 x 0.95mm 0.95mm 9.1mm 3.465 V +85 °C 1800MHz 3.135 V -40 °C 9.1mm Surface Mount
RS庫存編號 823-2224
製造零件編號Si52112-A2-GT
HK$15.788
/個 (每包:5個)
單位
25MHz 55% TSSOP 8 3.1 x 4.5 x 1.05mm 1.05mm 3.1mm 3.46 V +85 °C 100MHz 3.13 V -40 °C 4.5mm Surface Mount
RS庫存編號 168-9984
製造零件編號SI52147-A01AGM
HK$33.40
Each (In a Tray of 490)
單位
25MHz 55% QFN 48 6 x 6 x 0.75mm 0.75mm 6mm 3.465 V +85 °C 100MHz 3.135 V -40 °C 6mm Surface Mount
RS庫存編號 159-7762
製造零件編號AD5930YRUZ
HK$98.546
毎管:75 個
單位
- - TSSOP 20 6.5 x 7.6 x 1.05mm 1.05mm 6.5mm - +125 °C - - -40 °C 4.4mm Surface Mount
RS庫存編號 160-9827
製造零件編號AD9548BCPZ
HK$336.644
Each (In a Tray of 168)
單位
1GHz 60% LFCSP VQ 88 12.1 x 12.1 x 0.85mm 0.85mm 12.1mm 3.465 V +85 °C 1000MHz 3.135 V -40 °C 12.1mm Surface Mount
RS庫存編號 819-6718
製造零件編號SL28SRC01BZI
HK$18.31
/個 (每包:5個)
單位
14.3182MHz 55% TSSOP 16 5.1 x 4.5 x 1.05mm 1.05mm 5.1mm 3.465 V +85 °C - 3.135 V -40 °C 4.5mm Surface Mount
RS庫存編號 820-9630
製造零件編號AD9548BCPZ
HK$318.80
單位
1GHz 60% LFCSP VQ 88 12.1 x 12.1 x 0.85mm 0.85mm 12.1mm 3.465 V +85 °C 1000MHz 3.135 V -40 °C 12.1mm Surface Mount