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 796-0426
製造零件編號Si52147-A01AGM
HK$29.90
/個 (每包:2個)
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 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 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 709-4807
製造零件編號AD5932YRUZ
HK$85.71
單位
- - TSSOP 16 5 x 4.4 x 1.05mm 1.05mm 5mm - +105 °C - - -40 °C 4.4mm Surface Mount
RS庫存編號 168-9982
製造零件編號SI52143-A01AGM
HK$25.52
Each (In a Tray of 490)
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 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 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 796-0322
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 819-6796
製造零件編號SL28748ELI
HK$36.625
/個 (每包:2個)
單位
14.318MHz 55% QFN 32 5.1 x 5.1 x 0.8mm 0.8mm 5.1mm 3.465 V +85 °C - 3.135 V -40 °C 5.1mm Surface Mount
RS庫存編號 158-2557
製造零件編號AD2S99BPZ
HK$196.953
毎管:49 個
單位
- - PLCC 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 168-9981
製造零件編號SI52142-A01AGM
HK$14.372
Each (In a Tray of 490)
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 796-0401
製造零件編號Si52142-A01AGM
HK$13.412
/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 168-9978
製造零件編號SI5338C-B-GM
HK$109.784
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 200MHz 1.71 V -40 °C 4mm 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
RS庫存編號 709-4706
製造零件編號AD2S99BPZ
HK$187.60
單位
- - PLCC 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 819-6786
製造零件編號Si5351C-B-GM
HK$23.45
/個 (每包:2個)
單位
27MHz 55% QFN 20 4 x 4 x 0.85mm 0.85mm 4mm 2.75 V +85 °C - 2.25 V -40 °C 4mm Surface Mount
RS庫存編號 796-0388
製造零件編號Si52112-A1-GM2
HK$12.504
/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 796-0413
製造零件編號Si52144-A01AGM
HK$23.666
/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 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 169-0009
製造零件編號SI5351C-B-GM
HK$22.692
Each (In a Tray of 75)
單位
27MHz 55% QFN 20 4 x 4 x 0.85mm 0.85mm 4mm 2.75 V +85 °C - 2.25 V -40 °C 4mm Surface Mount