Eng-Tips is the largest engineering community on the Internet
Intelligent Work Forums for Engineering Professionals
-
Congratulations waross on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!
Square Wave to Sine Wave
- Thread starter DPJ
- Start date
There are several ways depending requirements:
1.) CMOS buffer ( for constant amplitude ) followed by multipole lowpass filter.
2.) Multiply frequency e.g. by 256 using phase lock loop
-- ROM sine wave look-up table -- DAC . If multiplier is low, follow by low pass filter.
3.) Use MC1648 VCO in PLL -- it has AGC.
If need more help send specs to nbucska@pcperipherals.com
Good luck Nick
1.) CMOS buffer ( for constant amplitude ) followed by multipole lowpass filter.
2.) Multiply frequency e.g. by 256 using phase lock loop
-- ROM sine wave look-up table -- DAC . If multiplier is low, follow by low pass filter.
3.) Use MC1648 VCO in PLL -- it has AGC.
If need more help send specs to nbucska@pcperipherals.com
Good luck Nick
- Status
Similar threads
- Locked
- Question
- Question