LMV822-N: Cannot find document for SNOA839

Johny Hsu

Part Number: LMV822-N

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

2 months ago

0 Ron Michallick 2 months ago

TI__Guru*** 147696 points

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.

0 Clemens Ladisch 2 months ago in reply to Ron Michallick

Guru 276290 points

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).

0 Johny Hsu 2 months ago in reply to Clemens Ladisch

Prodigy 50 points

Wich page has link?? I can't found.

+1 Clemens Ladisch 2 months ago in reply to Johny Hsu

Guru 276290 points

Click on the "Original question" link ("CANT FIND DOCUMENT FOR SNOA839??"), then on "0638.SNOA839.xls".

0 Johny Hsu 2 months ago in reply to Clemens Ladisch

Prodigy 50 points

Yes, got it...

Thanks a lot~

Amplifiers

Amplifiers forum

LMV822-N: Cannot find document for SNOA839