[sdiy] An Improved Sine Shaper Circuit

Donald Tillman don at till.com
Sat Apr 18 19:59:01 CEST 2020

> On Apr 17, 2020, at 2:25 PM, Richie Burnett <rburnett at richieburnett.co.uk> wrote:
> How sensitive is the THD nulling to ambient temperature, Don? 

Good question.

The effect is similar to a classic exponential converter circuit.  I believe you can completely compensate for it with a tempco resistor on the diff amp pair input.  (Or two, depending on how you do it.)

For most applications you might not care.  (Do we know of any temperature compensated sine shapers out there?)

  -- Don
Donald Tillman, Palo Alto, California

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