Tool/software:
I'm looking at the document with literature number SNOA839 "A quick sine wave generator", where can i find the on-line excel sheet for calculating the components?
Can help to provide this link?
Thanks a lot~
Johny
Tool/software:
I'm looking at the document with literature number SNOA839 "A quick sine wave generator", where can i find the on-line excel sheet for calculating the components?
Can help to provide this link?
Thanks a lot~
Johny
Hello Johny,
The excel sheet may be lost long ago.
For a rail to rail output A1, Oscillation frequency is 0.721 / (R1 * C1), not counting propagation delay an slew rate). Output is a square wave; so oscillation frequency plus a bunch of odd harmonics.
A2 is a 2 pole filter, this online tool helps build on of these. https://webench.ti.com/filter-design-tool/filter-type
Choose low pass 2 poles and set cutoff frequency to oscillation frequency.
The Excel sheet is linked to by the linked question, and still works.
It contains just the formulas shown in SNOA830, except that R1 = 1 / (2 × 0.693 × f × C1).