It is definitely slew rate limited. Here is a third version, this time using a faster opamp.

View attachment 82221

Hi, Im trying to create a sine generator with 3 output at 30 kHz. How can I build this ?
there will be two different output (24V and 48V) In my photo, I assume that i can get 0-5 V from dds.
i use arduino

 

Mods Note:
Please cut the useless part and compress the resolution of image file to as 800x600 or 1024x768 before you upload the file, the original file size about 1.6 Mb and I already compressed it to as 48 Kb, thanks for your cooperation.

How can I customize for 0-24V and 0-48 V at 30khz

 

Hi folks,
Im new to analog design. My homework is to build a sinus and square wave generator
Vout1= 24V ; Vout2= 48V
fout (max) = 30kHz
I need to control this generator with arduino. (Choose voltage and frequancy)
I can amplify PWM from 0-5V to 0-24V (200kHz) but I dont know how to convert this signal to sine wave.
Sine wave should be 0-24V and 0-48 V

Thanks a lot

 

Hello,

Without giving out too much info, to create a sine wave with a digital device you usually need to output a special pattern with PWM that mimics a sine wave average over a limited local time range. If you use for example a square wave then your filter had to be able to be tuned to different frequencies, which is possible but not that simple.
This is if you want low THD that is.

 

24V and 48V outputs can be done with a high voltage op amp if the output load is not a low impedance.
Is that voltage RMS?

 

Here is why your output signal is clipped:

 

Here is why your output signal is clipped:

Thanks, I thought that it caused by the saturation of the op amp. How do i fix this ?

 

24V and 48V outputs can be done with a high voltage op amp if the output load is not a low impedance.
Is that voltage RMS?

Output current should be max 50 mA. Nope, it not a Rms voltage. I only focused to generate the sine wave from square wave but I am open to different ways. I only need a sine signal at 24 and 48 V at max 30kHz

 

The input diodes clip when the input is 0.6V to 0.7V peak. Your input is 2.5V peak so of course the diodes are clipping.
Also your circuit gain is 1+ (249k/5k)= 50.8 times so the output will clip when the input is higher than 11V/50.8= 0.225V peak with no load.