THS4531: Input triangle waveform to THS4531, how to make the design to output Sin or cos waveform?

Hi Eggsy,

long time ago I did it this way:

THD < 0.4% :-)

But this was a low frequency application and it only works, if the amplitude of triangle wave does not change.

Can you tell a bit more about your application? What is the frequency range of triangle wave? What is the amplitude range?

Kai

Well if your input frequency is fixed, what you are kind of saying is you want the fundamental only in the spectrum, that implies a bandpass filter - 

You do know the THS4531 is an FDA where if that is correct, use the THS4531A instead. 

Do you want the circuit to convert triangle waves to sine waves for a wide range of frequencies or just one frequency? What is the end equipment and how accurate of a sine wave do you need?

Hi Sean,

The frequence is 500Khz.

THe end equirement is measure optical encoder.

Do you have any suggestuons?

Thanks!

Hi Eggsy,

can you post a schematic or any other further details?

Kai

Hi Kai,

Customer just start their design. We don't have SCH.

You can refer to this link about the application. 

http://www.ti.com.cn/solution/cn/servo-drive-position-sensor?variantid=20216&subsystemid=21741