Analog sine/saw wave question

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Anonymous
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 Hi all

   

 

   

Is possible make analog (no dds lut) sine and saw or triangle  waveform from internal blocks and few passive component ? (CY8C29466)

   

 

   

Many thanks help

   

 

   

Kamil

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6 Replies
Anonymous
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        It depend on requirement of accuracy, One easy way is use PWM for basic oscillation and reduce high harmonic by LPF. This is for sine wave, SAW think yourself.   
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Anonymous
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        Internal connection from PWM digital output to analog LPF input is possible ? how to make ?   
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ETRO_SSN583
Level 9
Level 9
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There are many approaches.

   

 

   

1) This method shows filter approach as well as DDS. www.cypress.com/    AN2025

   

2) Another approach is to use SC Integrator for sww/triangle www.google.com/url    AN2115

   

 

   

Regards, Dana.

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Anonymous
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        You will be able almost you want to do. I offer you to place user module at first, Click every where, Double click every where. See dialog box and Obey that's order. Then you might be can design PSoC that you want.   
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ETRO_SSN583
Level 9
Level 9
250 likes received 100 sign-ins 5 likes given

You could also experiment with Wien Bridge, capable of very low distortion,

   

using PGA. Note use of bulb for AGC, could be replaced with jfet/diode network

   

to implement AGC.

   

 

   

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Anonymous
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        Thanks usefull links and info Kamil   
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